Leading Lawyers

Firms To Watch: International arbitration

Akerman LLP is an increasingly prominent name for Latin America-related arbitral disputes. Miami-based group head, Luis Pérez, is commended for his ‘unique ability to navigate through different legal systems in Latin America’.
During 2022/23, Concepcion Disputes PA added twelve new clients to its international arbitration roster, including Nutrimix Feeds and Ridgetop Development. The team is gaining market share in both commercial and investor-state cases.
Milbank continues to grow its profile in international arbitration since the late 2022 arrival of Viren Mascarenhas from King & Spalding LLP. The team is particularly noted for its activity in the energy and infrastructure areas.
Orrick, Herrington & Sutcliffe LLP significantly expanded its international arbitration practice in early 2023 with the hire of Hagit Muriel Elul, who joined in New York from Hughes Hubbard & Reed LLP.

International arbitration in United States

Debevoise & Plimpton LLP

Widely considered to rank among the leading arbitration groups worldwide, Debevoise & Plimpton LLP’s US offering is a key contender for major, headline-grabbing cases across the globe. Equally adept at commercial and investor-state work, the New York-based team is routinely involved in landmark matters—across a comprehensive range of industries—on behalf of both corporate and state clients. Department co-chair Catherine Amirfar brings to bear extensive experience in high-stakes, public international law disputes and successfully represented Italian investors in ICSID proceedings against Albania arising out of the claimants’ investments in a hydroelectric plant and a media company. Fellow co-head Mark W. Friedman additionally co-leads the mining and natural resources practice; he paired up with increasingly prominent arbitration specialist Ina Popova to represent Gramercy Funds Management in a complete win on jurisdiction and merits in an UNCITRAL arbitration against the government of Peru under the US-Peru Trade Promotion Agreement (TPA). Other experienced names include Latin America practice co-head Dietmar Prager, who ‘stands out for his decisiveness and sharp intellect’; and Natalie Reid, who co-chairs both the public international law group and the Caribbean practice group. Talented up-and-coming names include next-generation partner Laura Sinisterra and counsel Floriane Lavaud. David Rivkin has retired.

Practice head(s):

Catherine Amirfar; Mark W. Friedman

Other key lawyers:

Dietmar Prager; Natalie Reid; Ina Popova; Laura Sinisterra; Floriane Lavaud; Christopher Tahbaz; Nawi Ukabiala


‘Debevoise has the best international arbitration team in the world. The team is comprised of many partners who are leading practitioners in the field. Partners and senior associates are exceptionally intelligent, extremely hard-working, very responsive, and have outstanding advocacy skills.’

‘I co-counseled on two matters with the IA team headed by Catherine Amirfar. A very diligent, hard-working unit, on top of the detail and very easy to work with. They all had an understanding of the cultural sensitivities in the cases (Middle East-based clients).’

‘I consider the Debevoise team to be at the top of the best (non-boutique) international arbitration practices in the US and globally.’

‘Based on my personal experience, the best individuals are Catherine Amirfar, Natalie Reid and Christopher Tahbaz.’

‘I have had the pleasure of working with a team including Dietmar Prager, Laura Sinisterra and Nawi Ukabiala, one of the best teams I have come across. They worked seamlessly with each other, kept the client regularly updated and had excellent strategic sense when conducting arbitrations.’

‘Mark Friedman is the best possible leader for this team of arbitration superstars. He is extremely intelligent, a superb strategist and advocate and very personable. His oral and written advocacy skills are really impressive and can make the difference in a big case. He is the best arbitration practitioner I know.’

‘Ina Popova is one of the most complete arbitration lawyers I know. Clients are always thrilled to have Ina on their side, as she is extremely intelligent and an outstanding advocate. Ina is also fluent in many languages, which is extremely useful in hearings.’

‘Dietmar Prager stands out for his decisiveness and sharp intellect on the various issues that were presented in the arbitration both on the merits and procedurally. Laura Sinisterra stood out for being always on the ball on all matters relating to the case, and her ability to recall facts and evidence.’

Key clients

Discovery Communication


Gramercy Funds Management

Hydro and a group of Italian investors

The Republic of Iraq

SMM Cerro Verde Netherlands

Tethyan Copper Company (jointly owned by Antofagasta Minerals of Chile and Barrick Gold Corporation of Canada)

Work highlights

  • Successfully represented Gramercy Funds Management, and an affiliate, in an UNCITRAL arbitration against the Government of Peru under the US-Peru TPA, arising out of Peru’s efforts to evade payment of agrarian bonds issued in exchange for property expropriated by the government in the 1970s.
  • Successfully defended the Government of the Republic of Iraq against ICSID claims in two separate arbitral proceedings, totaling over $1bn.
  • Represented Freeport-McMoRan and Sociedad Minera Cerro Verde in an ICSID arbitration against Peru under the US-Peru TPA, involving claims of approximately $1bn.

Freshfields Bruckhaus Deringer LLP

Satisfied clients hail Freshfields Bruckhaus Deringer LLP as ‘the best law firm in international arbitration’. Forming a significant part of its global international arbitration practice, the firm’s US offering is split between Washington DC and New York and is active worldwide, with a focus on the Americas. Recognized internationally for its record in ICSID cases, with an emphasis on major investor-state disputes, the group is also well-versed in high-stakes commercial arbitrations. In Washington DC, Latin America practice co-head Nigel Blackaby draws on extensive hands-on experience—he has acted as counsel or arbitrator in over 100 arbitrations—and is particularly revered for energy and mining disputes. Also in DC, Caroline Richard is noted for her focus on investor-state cases, with recent involvement in major multi-jurisdictional matters. From New York, Buenos Aires- and New York-qualified Noiana Marigo co-heads the global international arbitration team and the Latin America practice and is sought after for work across the Americas; she recently teamed up with Blackaby and Richard to represent Glencore on a landmark ICSID arbitration claim against Colombia. New York’s Elliot Friedman fronts the international arbitration group for the Americas and is representing ConocoPhillips in its ongoing attempts to enforce its mammoth ICSID award against Venezuela. Up-and-coming arbitration specialist Lee Rovinescu and Thomas Walsh are also recommended in New York.

Practice head(s):

Elliot Friedman

Other key lawyers:

Nigel Blackaby; Noiana Marigo; Caroline Richard; Lee Rovinescu; Thomas Walsh; Sofía Klot; Natalia Zibibbo; Santiago Gatica; Ezequiel Vetulli; Rodrigo Millan


‘A top-tier team, with significant expertise and experience at all levels. I’ve worked with many teams from various firms in different countries and, without a doubt, Freshfields is the best. It has a rare combination of top-down strategy design and bottom-up execution skills, which results in impeccable work.’

‘Best in the game. Best associates and partners in international arbitration for LatAm. Top talent from top firms in LatAm end up in Freshfields via US universities, this makes even their junior and mid-level associates relatively experienced and well-acquainted with the region. 100% bilingual all around.’

‘We highlight partners Noiana Marigo and Nigel Blackaby; counsel Natalia Zibibbo; and associates Sofia Klot, Santiago Gatica, Ezequiel Vetulli and Rodrigo Millan. Attention to detail is superb, the grasping of technical and valuation issues is unparalleled.’

‘Freshfields is just the best law firm in international arbitration. No questions. Freshfields organizes the best work teams for each case according to the client’s needs, synchronizing the roles, profiles and assignments of each team member in an extraordinary way.’

‘Each member of the team is an expert in his or her field and Freshfields leverages the best of their skills for the benefit of the client, under the extraordinary leadership of the partner in charge (please refer particularly to Nigel Blackaby, a lead counsel like no other).’

‘Natalia Zibibbo is the team leader that any client dreams for in international arbitration. Her leadership and the way she is able to structure the strategy for each proceeding and her absolute commitment to the client, working with the highest discipline, make her stands out as one of the best in the market.’

‘Santiago Gatica is a rising star lawyer in international arbitration. His full availability and awesome working capacity with extraordinary simplicity for the client are some of his most valuable qualities.’

‘The people working at the firm are aware of the client’s needs and assign lawyers that can meet those needs in terms of language and familiarity with the business.’

Key clients

ConocoPhillips Company

Exxon Mobil


Aéroports de Paris


Grupo Agroinsumos



Eco Oro Minerals

Smurfit Kappa

Banco Bilbao Vizcaya Argentaria (BBVA)

Latin American Regional Aviation Holding

IC Power

Kenon Holdings

Abertis Infraestructuras



The AES Corporation


J&F Investimentos


FTSE International

Pampa Energia

Chevron Corporation

Equinor (Statoil)

Work highlights

  • Successfully represented ConocoPhillips before the US District Court in DC, where it secured a ruling that recognized and enforced an ICSID award obtained in 2019 against Venezuela—now valued at $13bn.
  • Represented Buzzfeed in two multimillion-dollar mass AAA arbitrations brought by 91 shareholders.
  • Successfully represented the London Stock Exchange Group (LSEG) in a dispute with Cürex Index Data Systems arising from a breach-of-contract claim.

King & Spalding LLP

A ‘market-leading international arbitration practice’, King & Spalding LLP impresses sources with its strong capability in both investor-state and commercial cases. Arguably best known for its dominant position in energy and natural resources disputes, it also demonstrates adept handling of matters in the manufacturing, construction, transport and telecoms spheres, among others. New York managing partner Edward Kehoe and Houston-based Doak Bishop are widely considered references in the market and they continue to represent Chevron in a high-profile investment treaty arbitration against the Republic of Ecuador, seated in The Hague, arising out of a $9.5bn Ecuadorian court judgment against Chevron for alleged environmental harm caused by historical oilfield operations. Houston-based Wade Coriell and Atlanta-based Elizabeth Silbert—who were recently appointed global head and deputy head of international arbitration respectively—are also co-leading the Chevron file. Other senior names include New York-based Samaa Haridi, who is an experienced counsel and arbitrator; Harry Burnett, who sits in Miami and focuses on Latin America-related work; Craig Miles, who splits his time between Houston and Miami and specializes in energy and infrastructure disputes; and Chicago’s Javier Rubinstein, who offers experience in English and Spanish-domiciled work. Aloysius Llamzon, based in Washington DC, is a key up-and-coming name.

Practice head(s):

Wade Coriell; Elizabeth Silbert

Other key lawyers:

Edward Kehoe; Doak Bishop; Harry Burnett; Samaa Haridi; Craig Miles; Javier Rubinstein; Erica Franzetti; Reginald Smith; Fernando Rodriguez-Cortina; Aloysius Llamzon


‘A market-leading international arbitration practice (for both commercial and investor-state arbitration).’

‘We highlight Samaa Haridi, who is extremely hard-working and a team player, and Harry Burnett, who possesses strong knowledge of Latin America.’

‘A strong capacity for thinking outside of the box and finding creative solutions to legal issues, while maintaining precise attention to detail of the contractual provisions and applicable law.’

‘This team has a strong understanding of arbitration and litigation practice, fields teams fluent in multiple languages, and understands our industry very well. It also has a deep bench should it need to draw on expertise such as tax, white-collar, and the like. The King & Spalding team is a trusted advisor.’

‘Javier Rubinstein is a highly experienced partner. He is fluent in English and Spanish. Javier displays excellent judgment and provides practical, strategic advice.’

‘The best and most diverse international arbitration practice in the market. K&S has a unique combination of industry expertise, massive experience in all regions, lawyers qualified in key jurisdictions and fluent in local languages. The team is incredibly responsive, very flexible in fee agreements and super collaborative.’

‘Harry Burnett, Erica Franzetti, Craig Miles, Fernando Rodriguez-Cortina, and Samaa Haridi are absolute stars in the field.’

‘The entire KS team has the desire to understand the client and its business as well as possible in order to provide excellent advice. Moreover, the team’s experience and way of formulating the claims to resolve the situation during a dispute were outstanding.’

Key clients

Petersen Energía

Refinería de Cartagena


Republic of Turkey

Multiple renewable energy clients

Quanta Services

Chevron Corporation

Lima Expresa and VINCI


Westmoreland Coal Company

Odyssey Marine Exploration

The Williams Companies

FCL Ambiente

Amerra Capital Management


Work highlights

  • Represented Petersen Energia in a long-running breach-of-contract dispute against Argentina, which involves arbitration and litigation.
  • Secured a $1.9bn award for Refinería de Cartagena (Reficar) in an ICC arbitration against the contractor relating to delays and cost overruns involving a refinery in Colombia.
  • Represented Webuild in a long-running ICSID arbitration against Argentina concerning the construction and maintenance of a 60km toll road and bridge.

White & Case LLP

An exceptional arbitration practice that has all the ingredients necessary for success’, White & Case LLP’s full-service offering is distinguished by its enviable track record in both commercial and investor-state cases, with sources particularly praising its expertise in the latter sphere. Frequently engaged to represent both investors and states, the team has represented parties in over 100 investor-state disputes worldwide and consistently handles cases under ICSID and UNCITRAL rules. Fielding one of the deepest benches in the market, the national group is split between offices on the East and West Coast with Washington DC standing as the seat of global international arbitration head Abby Cohen Smutny, who is hailed for her ‘unsurpassed knowledge and practice in international public law and international investment arbitration’. Cohen Smutny is acting alongside New York-based Ank Santens to represent the Kingdom of Saudi Arabia in a $500m telecoms-related dispute under the China-Saudi bilateral investment treaty (BIT). Other go-to senior partners include Washington DC-based Carolyn Lamm, who ‘can find a solution in any situation’, and New York’s Paul Friedland, who is renowned globally for his specialist experience in the international arbitration space. The New York group also draws on Damien Nyer, who heads the Americas international arbitration practice. Hansel Pham is a further key contact in Washington DC, while Brody Greenwald is recommended in Los Angeles. Kristen Young departed the practice in February 2024, and Jonathan Hamilton left in March 2024.

Practice head(s):

Abby Cohen Smutny

Other key lawyers:

Carolyn Lamm; Paul Friedland; Ank Santens; Damien Nyer; Hansel Pham; Brody Greenwald; Silvia Marchili; Petr Polášek; Nicolle Kownacki


‘White & Case has an amazing team of talented and qualified professionals. ’

‘I work with a team coordinated by Carolyn Lamm. She is fantastic and an incredible manager. She coordinates the work on cases perfectly. I am amazed by her attention to detail. She can find a solution in any situation.’

‘White & Case has an exceptional arbitration practice with all the ingredients necessary for success – vast legal knowledge and practical expertise in all fields of international arbitration and, especially, in investor-state arbitration.’

‘The team consists of highly competent, and thoroughly dedicated lawyers capable of tackling even the most difficult legal problems. They also understand well the specifics of working with sovereign clients.’

‘Abby Cohen Smutny is a brilliant counsel. Her unsurpassed knowledge and practice in international public law and international investment arbitration allows her to make the best strategic decisions for a case and execute them perfectly with her superb written and oral advocacy.’

‘Petr Polášek is one of the outstanding lawyers of his generation, who stands out for his deep knowledge, excellent professional skills and hard work.’

‘First-class lawyers, with global reach and multiple competencies, they are wonderful to work with. In Washington DC, Nicolle Kownacki is very dedicated, knowledgeable and reliable—wonderful to work with.’

Key clients

Honduras Próspera and its affiliates

Gabriel Resources and Gabriel Resources (Jersey)

MetLife, MetLife Servicios and MetLife Seguros de Retiro

Zurich Insurance Company, and Zurich South America Invest AB

Republic of Uzbekistan

Republic of Bulgaria

Kingdom of Saudi Arabia

Ministry of Justice, Republic of Korea

WeBuild (formerly Salini Impregilo), Jan De Nul, Grupo Unidos por el Canal

Islamic Republic of Pakistan

Rutas de Lima

WorleyParsons International

Mitsui & Co


Orazul International España Holdings

Red Eagle Mining Corp

Work highlights

  • Acted for Telefónica in two investment treaty claims against the Republic of Colombia and the Republic of Peru respectively.
  • Successfully represented Rutas de Lima against the Municipalidad Metropolitana de Lima in a toll-road dispute involving one of the largest infrastructure projects in Peru.
  • Represented Honduras Próspera in its multibillion-dollar ICSID claim against Honduras, arising out of the State’s abolishment of a free zone in disregard of legal stability agreements.

Arnold & Porter

A first port of call for state-side mandates, Arnold & Porter leverages the firm’s prominent sovereign and government practice to excel in representing sovereign clients in investor-state arbitrations. Its preeminent reputation in this sphere is underpinned by its impressive success rate in investment arbitrations. The group also continues to increase its share of commercial disputes, with a focus on the life sciences and technology industries—its US West Coast arbitration practice is particularly noted for this type of work. From Washington DC, global department co-chair Paolo Di Rosa specializes in complex investment arbitration; he recently teamed up with partners in Shanghai and Seoul to successfully defend the Government of South Korea in the first treaty-based investment arbitration ever filed against Korea. Fellow co-chair Maria Chedid, based in San Francisco, is one of two attorneys from the US currently serving as a US member of the ICC Court of Arbitration. In New York, Mélida Hodgson is recommended for Latin America-related disputes, where she has represented Venezuela, Panama and Peru, among other sovereigns. Additionally, Washington DC-based Whitney Debevoise is highly regarded for international finance disputes.

Practice head(s):

Paolo Di Rosa; Maria Chedid

Other key lawyers:

Whitney Debevoise; Mélida Hodgson; Amy Endicott; Kabir Duggal; John Muse-Fisher

Key clients





Verisign, Inc.

Samsung Electronics, Samsung Heavy Industries

POSCO Energy

Czech Republic

Korea (South Korea)








Work highlights

  • Successfully defended the Government of South Korea in the first treaty-based investment arbitration ever filed against Korea, valued at $4.7bn.
  • Acted as lead counsel to the Republic of Turkey in an ICSID arbitration initiated by Afkel Commodities and I-Systems Global under Turkey’s BITs with Singapore and the Netherlands.
  • Represented Peru in several separate international investor-state arbitrations.

Chaffetz Lindsey LLP

Chaffetz Lindsey LLP’s firm-wide focus on international arbitration pays dividends in a diverse and multi-jurisdictional caseload. The New York-based international disputes boutique is well versed in representing the full spectrum of clients in commercial and investor-state arbitrations, as demonstrated by its recent work on behalf of sovereign states, state-owned companies and major multinational corporations. Department head James Hosking is highlighted by sources as ‘a phenomenal team leader’, where he draws on his experience in acting as counsel in over 100 arbitration proceedings. Among his highlight cases, Hosking continues to represent AES Corporation in its high-profile reconvened $2bn ICSID arbitration against Argentina, seeking damages for breaches of the US-Argentina BIT. The AES work is additionally co-led by Caline Mouawad, who has deep experience in commercial and investment disputes, and Aníbal Sabater, who is ‘capable of dealing with the most complex cases’. Other key partners include seasoned specialist and firm co-founder David Lindsey; ‘formidable lawyer and arbitrator’ Yasmine Lahlou; the ‘brilliant and efficientGretta Walters; and Andreas Frischknecht, whose practice encompasses both international arbitration and cross-border litigation.

Practice head(s):

James Hosking

Other key lawyers:

David Lindsey; Aníbal Sabater; Caline Mouawad; Yasmine Lahlou; Gretta Walters; Andreas Frischknecht


‘Chaffetz Lindsey has a fabulous international arbitration practice. The team is doing superb work in arbitration proceedings and enforcement actions and its lawyers are of the highest caliber.’

‘James Hosking is a phenomenal team leader. Yasmine Lahlou is a formidable lawyer and arbitrator; she is everything parties would want in an arbitrator and is a great advocate. Gretta Walters has significant credibility in the arbitration community. She is brilliant and efficient.’

‘The firm’s lawyers are highly qualified and focused on clients needs. The team is very responsive. The work is carried out accurately and with great legal and strategic reasoning.’

‘We worked with Aníbal Sabater. He is a very helpful person, capable of dealing with the most complex cases. Aníbal is a professional with solid skills and strong charisma and is always punctual in meeting deadlines.’

Key clients

The AES Corporation

APM Terminals Callao

Clorox Spain

Czech Republic

Eletrobras CGT Eletrosul


IESA Oleo & Gas



SPI Energy

Stoneway Capital

Work highlights

  • Represented Clorox Spain in its PCA-administered UNCITRAL arbitration against the Bolivarian Republic of Venezuela under the Spain-Venezuela BIT.
  • Represented AES Corporation in an ICSID arbitration against Argentina seeking over $2bn in damages for breaches of the US-Argentina BIT.
  • Retained by the Government of Malaysia to advise on potential proceedings in the US relating to a 2022 arbitral award of approximately $15bn, resulting from an ad hoc arbitration initiated by eight Filipino citizens purporting to be the heirs of the former Sultan of Sulu.

Covington & Burling LLP

Covington & Burling LLP’s international arbitration team is praised as ‘not only technically impeccable, but also provides outstanding service’. The group’s close relationship with the Government of Ukraine continues to see it play a central role in the state’s various proceedings against the Russian Federation related to the February 2022 invasion of Ukraine, including representing state-owned Naftogaz in connection with Russia’s expropriation of its assets in occupied Crimea. Over the past year, the team also handled several investor-state disputes on behalf of corporate clients, while its commercial arbitration work saw it act on a slew of cases in the insurance, construction, telecoms, and energy and natural resources fields. From Washington DC, Marney Cheek co-chairs the global arbitration and disputes practice. Cheek is a key contact for the Ukraine cases together with Washington DC-based appellate specialist David Zionts, whose practice also spans arbitration; Jonathan Gimblett, who splits his time between London and DC; and New York-based David Pinsky. Other names in DC include Allan Moore, who specializes in commercial and insurance coverage disputes; Miguel López Forastier, who co-chairs the global problem-solving practice; and newly promoted partner Clovis Trevino. In New York, Nicole Duclos is a popular choice for Latin America-related disputes.

Practice head(s):

Marney Cheek

Other key lawyers:

David Zionts; Jonathan Gimblett; David Pinsky; Allan Moore; Miguel López Forastier; Clovis Trevino; Nicole Duclos


‘Covington is not only technically impeccable, but its service is outstanding. I have worked with numerous big US law firms in the past and never have seen such promptness in answers, such a genuine effort in keeping the client completely updated in the minor details of the docket.’

‘The team understood perfectly the nature of the case (not only the legal dimension, but also the risk of a reputational crisis and the necessary care to cover all the angles). I am impressed and very satisfied.’

‘I have worked principally with David Zionts and Nicole Duclos. Both are exceptional. They stand out for their knowledge and understanding of a not very common matter, in a case that involves a government agency.’

Key clients

Government of Ukraine, Ministry of Foreign Affairs


Eli Lilly & Company


Vulcan Materials


DTEK Krymenergo

Telcell Wireless/ International Telcell Cellular

Radio Free Europe/Radio Liberty’s Prague headquarters, RFE/RL

Work highlights

  • Successfully represented Ukraine’s state-owned oil and gas company, Naftogaz, in securing a $5bn award against the Russian Federation for its 2014 seizure of the company’s assets in Crimea.
  • Acted for Ukraine against the Russian Federation in a case under the Genocide Convention.
  • Represented Radio Free Europe/Radio Liberty’s Prague headquarters, RFE/RL, odštěpný závod, in a case before the European Court of Human Rights against Russia, arising from fines that Russia has levied against RFE/RL under Russia’s so-called foreign agent law.

Curtis, Mallet-Prevost, Colt & Mosle LLP

One of the strongest teams in defending state interests’, Curtis, Mallet-Prevost, Colt & Mosle LLP is highly regarded for its track record in investment disputes, where it predominantly acts for sovereign states and state-owned companies. The team also continues to add to its corporate roster and it has recently represented private and state-owned companies in both contract and treaty-based claims. New York-based firm chairman, George Kahale, leads the practice and continues to represent the Bolivarian Republic of Venezuela in the biggest ICSID annulment case in history, stemming from ConocoPhillips' original $30bn demand for damages. Managing partner of the Washington DC office, Claudia Frutos-Peterson, is also a high-profile arbitration specialist- she is currently acting together with Fernando Tupa, who splits his time between New York and Buenos Aires, and the London office to defend the Argentine Republic in two investment arbitrations relating to pension reforms. The group additionally includes up-and-coming specialist Simon Batifort, who works between New York, Brussels and Paris; Elisa Botero, whose practice is divided between New York and Bogotá; Washington DC-based Borzu Sabahi, who ‘excels in analyzing complex legal issues’; and New York-based associate Andrew Larkin.

Practice head(s):

George Kahale

Other key lawyers:

Claudia Frutos-Peterson; Fernando Tupa; Simon Batifort; Elisa Botero; Borzu Sabahi; Andrew Larkin; Marat Umerov; Hermann Ferré; Justin Jacinto; Guillermo Ulke; Arianna Sánchez


‘One of the strongest teams in defending state interests in complex matters.’

‘Defending state interests comes with special and unique challenges both legally and logistically. Curtis’ team knows better than most in the field how to adjust and transform these challenges into opportunities.’

‘The team handles international arbitration with excellence. Its experience is evident in the way it conducts matters. The firm’s document management system is also commendable.’

‘George Kahale is very decisive and persuasive in his arguments.’

‘Curtis, Mallet-Prevost, Colt & Mosle LLP has a very professional and diligent, as well as cost- and time-efficient, arbitration team.’

‘As lawyers say “The devil is in the details” and we were astonished by Borzu Sabahi’s and counsel Marat Umerov’s deep knowledge of the case, even of very minor issues, and how they rebut all claimant arguments.’

‘The team takes a client-centered approach and took time to visit our office, which was thousands of miles away, to personally answer questions at no added cost.’

‘Borzu Sabahi excels in analyzing complex legal issues, breaking them down, and devising effective solutions; pays close attention to every detail; provides empathy and understanding; maintains a client-centered approach and prioritizes client needs.’

Key clients

Republic of Uzbekistan

Republic of Congo

United Mexican States

Republic of Ecuador

Argentine Republic

Republic of Colombia

Republic of Panama

State of Kuwait

Republic of Cyprus

Dominican Republic

Kingdom of Spain

Republic of Uganda

Republic of India

Republic of Kazakhstan

Bolivarian Republic of Venezuela/PDVSA

Work highlights

  • Successfully represented the State of Kuwait in the first ICSID case brought against it, involving an $800m claim.
  • Successfully acted for Spain in a high-value investment treaty arbitration.
  • Represented the Bolivarian Republic of Venezuela in an ICSID annulment case stemming from ConocoPhillips $30bn demand for damages.

Foley Hoag LLP

With a strong record in state-side representations, Foley Hoag LLP’s thriving international arbitration practice specializes in investment disputes, where it acts for nations worldwide. The team has successfully represented over 80 sovereign clients in multimillion-dollar disputes across all key industries, including recently scoring a victory for Nepal in its first-ever investment arbitration, which was brought under the UK-Nepal BIT. The firm also houses a solid commercial arbitration offering that frequently acts for corporations and state-owned entities in contractual disputes. Washington DC-based Constantinos Salonidis co-chairs the international litigation and arbitration department globally and has represented a string of European, Asian, Middle Eastern, and Latin American states in investment treaty arbitrations. Salonidis notably co-led the Nepal case together with fellow Washington DC-based partners Lawrence Martin and Tafadzwa Pasipanodya. Other recommended counsel in DC include Kenneth Figueroa and Clara Brillembourg, who together co-chair the Latin America practice, as well as Derek Smith and associate Sudhanshu Roy. From New York, Christina Hioureas also co-chairs the global group and additionally heads the firm’s United Nations practice; she is currently playing leading roles in cases on behalf of Croatia and Bangladesh. Daniel Schimmel, whose practice spans international dispute resolution and international corruption investigations, heads the group in New York.

Practice head(s):

Constantinos Salonidis; Christina Hioureas

Other key lawyers:

Lawrence Martin; Tafadzwa Pasipanodya; Kenneth Figueroa; Clara Brillembourg; Derek Smith; Sudhanshu Roy; Daniel Schimmel


‘I frequently work as an external expert with law firms in international arbitration cases and there is no law firm I like to work with more. Foley’s arbitration team is exceptional: bright individuals, top advocates and a fantastic team spirit.’

‘The firm is concerned about its clients (including limiting costs and creating realistic expectations) and capable of thinking out of the box when required.’

‘I particularly like working with Christina Hioureas: she is a careful and conscientious drafter, with an incredible work ethic, able to persuasively argue a case in a measured manner (not going in “overdrive”) and an inspiring team leader.’

Key clients

Access Now




Air France


Bangladesh Power Development Board

Bangladesh Petroleum Exploration & Production Company (BAPEX)

Bangladesh Oil Gas and Mineral Corporation (Petrobangla)

Bangladesh Telecommunication Regulatory Commission

Bulgaria (Permanent Mission to the UN)



Coal Power Generation Company Bangladesh

Crédit Agricole / CACEIS (France)


Dominican Republic


Ecolog International

Estate of Victor Jara

Equatorial Guinea


Gambia / Republic of The Gambia


Greek Orthodox Archdiocese of America


Himalaya Food Int’l


International Conference of Asian American Political Parties

Jalalabad Gas Transmission and Distribution System

Laboratoires Pierre Fabre


Liechtenstein (Permanent Mission to the UN)

Luxembourg (Permanent Mission to the UN)



Municipalidad Metropolitana de Lima


National Gas Transmission Corp of Greece


The Netherlands



Orange Business Services




Pierre Fabre Dermo-Cosmétique


Public Gas Corporation of Greece


Qatar Public Works Authority

Sedia Biosciences Corporation

Sierra Leone (Permanent Mission too)



St. Lucia






Work highlights

  • Successfully represented Nepal in its first-ever investment arbitration case.
  • Represented India in a UNCITRAL arbitration brought by a Southeast Asian telecom company regarding alleged interference by Indian regulatory authorities in the company’s licensing and operational activities in India.
  • Acted for Peru in an ICSID arbitration initiated by a Spanish telecom company under the Spain-Peru BIT regarding the limits of national territory, space law, and the state’s ability to regulate and tax activities related to outer space.

Skadden, Arps, Slate, Meagher & Flom LLP

Skadden, Arps, Slate, Meagher & Flom LLP possesses a fully integrated international litigation and arbitration practice, which provides it with the ability to utilize the same groups to handle arbitral disputes and connected judicial proceedings, including enforcement matters. Well-balanced between commercial and investor-state disputes, the group frequently lands key roles in multi-jurisdictional, high-stakes cases, with strong recent showings in the energy, technology, aerospace, financial services and manufacturing spheres. Julie Bédard heads the international litigation and arbitration group for the Americas and divides her practice between New York and São Paulo; she recently paired with up-and-coming partner Jennifer Permesly—also in New York—to represent Brazil’s Embraer, and its related entities, in a headline-grabbing $4.2bn ICDR case against Boeing. Additional recommended names in New York are global department head John Gardiner, who has extensive experience in commercial and investor-state cases; Timothy Nelson, who acts for sovereign and corporate clients on sensitive public international law issues and is currently advising a major energy company on an $8bn investment treaty claim; and Gregory Litt, who handles a varied mix of arbitral and judicial disputes.

Practice head(s):

John Gardiner; Julie Bédard

Other key lawyers:

Timothy Nelson; Gregory Litt; Jennifer Permesly

Key clients


Agility Public Warehousing Company K.S.C.P.

Trina Solar (U.S.), Trina Solar (Schweiz)

Ovintiv and Encana International Finance (Bermuda)

NextEra Energy Global Holdings

Waldencast and Obagi Cosmeceuticals

9REN Holdings

Work highlights

  • Representing Embraer, and its related entities, in connection with three multibillion-dollar international arbitration proceedings against The Boeing Company,  and its related entities, before the ICDR.
  • Representing Kuwait-based Agility Public Warehousing Company in an investor-state dispute with the Republic of Iraq arising from the cancellation of Agility’s indirect interest in Korek Telecom.
  • Representing Trina Solar (US) and Trina Solar (Schweiz) in a London-seated ICC arbitration against four affiliates of Total Renewables.

Three Crowns LLP

Three Crowns LLP focuses exclusively on international arbitration and international law, where it represents multinational corporates and sovereign states in high-stakes disputes. The team’s US offering, which in centered in Washington DC, has extensive expertise across a mix of commercial, investor-state and state-to-state cases and it further benefits from its ability to draw on its international lawyers for additional cross-border firepower. A co-founding partner of the firm, Luke Sobota enjoys a prominent reputation globally for his activity in headline-grabbing cases, with a focus on the energy, financial and technology spheres. Another seasoned specialist, Liz Snodgrass contributes deep experience in acting on commercial and investor-state cases and recently represented Burford Capital in a $140m arbitration brought against Sysco Corporation. Rounding out the partners is Scott Vesel, who brings to bear significant international prowess following stints in London and Bahrain. Vesel acted alongside the London office to represent the Sultanate of Oman in ICSID arbitration and annulment proceedings concerning a $180m claim brought by Turkish construction company, Atilla Dogan. The group also leans on a strong second line of non-partners, including Buenos Aires-qualified special legal consultant, Agustin Sanz; associate Simon Consedine; and English-qualified special legal consultant, Nicola Peart.

Practice head(s):

Luke Sobota; Liz Snodgrass; Scott Vesel

Other key lawyers:

Agustin Sanz; Simon Consedine; Nicola Peart


‘A strong international arbitration practice providing robust strategic and detailed advice.’

‘Liz Snodgrass provides excellent strategic legal advice and is very responsive.’

‘Three Crowns is active in some of the largest cases globally, few firms would have the critical mass to handle those cases—this team certainly has the capacity.’

Key clients



Sultanate of Oman

Chevron Corporation

Elliott Associates


Rio Tinto

Burford Capital

Viorel Micula



Work highlights

  • Represented Elliott Associates in bringing an investment-treaty claim against the Republic of Korea, securing a more-than-$100m award.
  • Represented the Sultanate of Oman in defending a $180m award following a BIT arbitration against Turkish construction company, Atilla Dogan, concerning a contract for the construction of an oil and gas pipeline.
  • Successfully acted for ContourGlobal Kosovo against the Government of the Republic of Kosovo, and various publicly owned enterprises of Kosovo, in an ICC arbitration seated in London.

Baker Botts L.L.P.

Primarily recognized for its strength in energy—primarily oil and gas—disputes, Baker Botts L.L.P.’s international arbitration group additionally shines in IP, construction, joint venture and general contractual cases. The firm’s continued investment in diversifying its practice was recently evidenced by the hire of two lawyers into its Washington DC office: seasoned investor-state specialist Jennifer Haworth McCandless and special counsel María Carolina Durán both joined from Sidley Austin LLP. The national department includes key names such as Houston-based senior counsel Michael Goldberg, who is a disputes veteran, and New York-based global practice co-head Andrew Behrman, who plays a lead role in many of the department’s most high-profile cases. Also recommended are New York-based special counsel Edward Schorr, who is sought after for energy disputes; and energy and TMT-focused Vern Cassin, whose practice is split between New York and Washington DC.

Practice head(s):

Andrew Behrman

Other key lawyers:

Michael Goldberg; Jennifer Haworth McCandless; María Carolina Durán; Edward Schorr; Vern Cassin; Verónica Restrepo; Natalia Zuleta;


‘The team has a lot of experience in international investment arbitration, and is one of the best groups in the field. I would highlight Jennifer Haworth McCandless, María Carolina Durán, Verónica Restrepo and Natalia Zuleta.’

Key clients

Devas Multimedia Private

Global Industrial Investment

Intercontinental Terminals Company


Oxbow Calcining

Rocket Ball

Work highlights

  • Representing the court-appointed official liquidator of India-based Devas Multimedia Private, which is the owner of a $1.3bn judgment of the Western District of Washington (and related arbitral award) against Government of India-owned Antrix Corporation.
  • Representing one of the largest real estate development companies in China, along with one of its investment companies, in an ICDR arbitration.
  • Acting as sole counsel to the Houston Rockets and Landry’s in defending a $100m claim from ROKiT Marketing for breach of the parties’ sponsorship agreement, and in prosecuting a $12m breach-of-contract claim against ROKiT in an AAA arbitration.

Cleary Gottlieb Steen & Hamilton

Cleary Gottlieb Steen & Hamilton’s international arbitration practice draws on ‘an outstanding mixture of seasoned professionals and hard-working staff’, according to sources. Split between New York and Washington DC, the US group additionally plugs into the firm’s extensive global network to represent clients worldwide on commercial and investor-state cases, with a notable emphasis on Latin America. The department is co-led from New York by Ari MacKinnon, who focuses on Latin America-related disputes; he is representing Pluspetrol Resources Corporation in a Spanish-language ICC arbitration initiated by Peruvian state-owned oil company, Perupetro. Department co-chair Jeffrey Rosenthal, also in New York, maintains a broad dispute resolution practice that spans a range of judicial and arbitral matters, with recent activity in post-merger disputes, treaty cases, joint venture disputes and securities issues, among others.

Practice head(s):

Ari MacKinnon; Jeffrey Rosenthal

Other key lawyers:

Mark McDonald; Jonathan Blackman; Katie Gonzalez; Boaz Morag


‘The team is an outstanding mixture of seasoned professionals and hard-working staff, who put forward a deep analysis of the matters. There is coordination around all aspects of the service.’

‘The individuals are highly involved in the matters and have -each of them- developed their own specific knowledge, which makes the overall mixture a very balanced one, between technical knowledge, analysis, and knowledge of the area of practice.’

‘Lawyers are smart, detailed and business-friendly, particularly Ari MacKinnon and Boaz Morag.’

Key clients

Sysco Corporation

Pluspetrol Perú Corp

Pluspetrol Resources Corp

Tecpetrol Bloque 56

Sonatrach Peru Corporation

The Republic of Argentina

The Resource Group

The Republic of Iraq

Telecom Italia

Work highlights

  • Representing Sysco in an LCIA arbitration and multiple related federal court litigations against affiliates of Burford Capital.
  • Acting for Pluspetrol Resources Corporation in a Spanish-language ICC arbitration concerning the allegedly wrongful termination of a license contract for the exploration and exploitation of hydrocarbons in Peru.
  • Representing the Republic of Argentina in multiple lawsuits and defending its interests across various US jurisdictions.

Hughes Hubbard & Reed LLP

The team at Hughes Hubbard & Reed LLP is praised for the ‘quality of its investor-treaty arbitration offering’—it also frequently handles commercial cases. Leveraging its experience under all major arbitration rules, including AAA, ICDR, ICC, LCIA and UNCITRAL, the group is engaged by both corporations and sovereign states to handle high-stakes, cross-border disputes. In Washington DC, John Townsend has an impressive track record in complex and politically sensitive matters; he continues to act alongside Washington DC-based department chair James H. Boykin to represent Ukrainian entities in five Crimea-related investment treaty arbitrations against the Russian Federation under the Russia-Ukraine BIT. The DC practice also includes Rémy Gerbay, who stands out for his ability to ‘bridge civil law and common law sensibilities’, and Diego Durán de la Vega, who co-heads the Latin American disputes practice. In New York, Daniel Weiner stands out for his niche expertise in art-related and pharmaceutical disputes. In February 2023, former department co-head Hagit Muriel Elul left the firm. In April 2024, new global co-head of arbitration Gaela Gehring Flores joined in Washington DC from A&O Shearman.

Practice head(s):

James H. Boykin

Other key lawyers:

John Townsend; Rémy Gerbay; Gaela Gehring Flores; Diego Durán de la Vega; Daniel Weiner; Christine Kang; Meaghan Gragg; Malik Havalic; Eleanor Erney; Tamara Kraljic


‘Hughes Hubbard & Reed has an excellent international arbitration practice, which is well-suited to compete among the best.’

‘We engaged James H. Boykin and his team to represent us in an international enforcement matter. It is impressive how internationally experienced James is in leading the mandate, and how he coordinates the various law firms from different countries.’

‘I regard Hughes Hubbard & Reed as a top player in global arbitration, particularly because of the quality of its investor-treaty arbitration offering.’

‘My go-to is Rémy Gerbay, who is a no-nonsense lawyer with detailed knowledge and deep understanding of legal and factual issues. His ability to bridge the civil law and common law sensibilities is key to investment-treaty disputes.’

‘It is a very experienced team with a keen understanding of the law.’

‘The team is capable of putting together comprehensive and effective strategies.’

‘James H. Boykin is exceptional. He gives carefully considered advice and sticks to agreed budgets. He is also very approachable and humble: he does not oversell the chances of success. Malik Havalic and counsel Tamara Kraljic are also extremely good.’

Key clients

Five Crimea-related arbitrations: Aeroport Belbek LLC and Igor Valerievich Kolomoisky v. The Russian Federation; PJSC CB PrivatBank and Finance Company Finilon LLC v. The Russian Federation; PJSC Ukrnafta v. The Russian Federation; Stabil LLC et al. v. The Russian Federation; Everest Estate LLC et al. v. The Russian Federation

BeiGene and BeiGene Switzerland

Sinopec International Petroleum Exploration Company

American Arbitration Association

The Republic of Equatorial Guinea

Deutsche Telekom

Chateau Vallee des Roses et al.

Imperial Pacific International LLC (IPI)

Westwater Resources

FaZe Clan

Arin Capital & Investment Corp

The Pellas Group/SER Corp (BVI)

Work highlights

  • Acted for BeiGene in a $1.2bn breach-of-contract claim against Bristol-Myers Squibb and its subsidiary, Celgene.
  • Represented Deutsche Telekom in a petition to enforce an arbitral award against the Republic of India under the Germany-India BIT.
  • Successfully represented a US investor in annulment proceedings seeking to overturn a 2021 award connected to a dispute with the Republic of Armenia.

Norton Rose Fulbright US LLP

Exceptional both in terms of its quality and its geographical reach’, Norton Rose Fulbright’s international arbitration practice leverages a thriving Houston offering, which marks it as a key contender for energy and natural resources-related work. Primarily active on commercial cases, the team is also well versed in investor-state matters, where it has extensive experience in both ICSID and UNCITRAL proceedings. From Houston, global department head, Mark Baker, has acted as counsel or arbitrator in cases spanning more than sixty countries worldwide, with a focus on the energy, infrastructure, mining, transport and financial services spheres. Kevin O’Gorman, also in Houston, spearheads the US international arbitration practice and specializes in commercial, energy, sovereign, treaty and project-related disputes. The group also draws on Washington DC’s Matthew Kirtland, who is praised as ‘inventive in his arguments’; New York-based insurance disputes co-head Mina Matin, who is highly regarded for Bermuda Form arbitrations; and talented San Francisco-based senior associate Katie Connolly.

Practice head(s):

Mark Baker; Kevin O’Gorman

Other key lawyers:

Matthew Kirtland; Mina Matin; Katie Connolly; Denton Nichols


‘The Norton Rose Fulbright team is exceptional both in terms of its quality and its geographical reach. I have worked with the Houston office under the brilliant leadership of Kevin O’Gorman and, indeed, am currently working with overseas offices in another matter.’

‘Kevin O’Gorman is outstanding in every way. He has the knowledge and experience to know what’s coming over the hill and how best to deal with it, and the intelligence and leadership skills to deploy team members to maximum effect to win a case.’

‘The team gains the trust of the tribunal with its persuasive arguments and outstanding advocacy. It understands that the client’s aims are best achieved by focusing on realistic positions and not “trying it on”.’

‘Matthew Kirtland is a joy to work with: committed to the client, inventive in his arguments, commercial, realistic and huge fun.’

‘Katie Connolly is an up and coming associate. She has an immense capacity for work and distills complex issues into simple drafting admirably.’

Key clients

The Republic of Kazakhstan

Woodside Energy (Formerly BHP)

Global Consulting and Mechanical Services

Unipec America

Work highlights

  • Represented the Republic of Kazakhstan in multiple enforcement proceedings in the US and abroad arising from a $500m Energy Charter Treaty award issued in a contested SCC matter.
  • Represented Unipec America in its successful application to confirm an arbitral award obtained against Limetree Bay, which resulted from an underlying $45m arbitration.
  • Represented an oil and gas subsidiary in contentious post-award proceedings arising out of an arbitration that concluded in November 2021.

Quinn Emanuel Urquhart & Sullivan, LLP

According to one appreciative client, Quinn Emanuel Urquhart & Sullivan, LLP’s international arbitration team ‘can get you the win you only dared to dream of’. With the ability to plug into one of the world’s leading dispute resolution practices, the group stands out for its broad arbitration offering that spans common and civil law matters, as well as commercial and treaty disputes. Chair of the US and Latin America international arbitration practice, David Orta splits his time between DC, Miami and New York and is equally adept at commercial and investor-state cases. Mark McNeill heads the practice in New York and is a former Attorney-Adviser for the Office of the Legal Adviser of the US Department of State. Other key contacts in New York include England and Wales-qualified Michael Young KC, who is praised as ‘exceptional in pleading, drafting and client care’. In Washington DC, Daniel Salinas-SerranoDawn Yamane Hewett and Lucas Loviscek are also recommended.

Practice head(s):

David Orta; Michael Young KC; Mark McNeill; Daniel Salinas-Serrano; Dawn Yamane Hewett; Lucas Loviscek

Other key lawyers:

Marc Greenwald; Odysseas Repousis


‘The quality across the team is outstanding. Lawyers are all at the top of their game; they know the ins and outs of the law, but also the reality of how a tribunal is likely to handle a matter, this allows them to be extremely pragmatic and above all STRATEGIC – they can get you the win you only dared to dream of.’

‘An extraordinarily responsive, coordinated and nimble team with deep knowledge of the energy sector. I am impressed that I have dedicated partners with light leveraging. More importantly, I have no hesitation in unleashing Quinn Emanuel when I need to send a strong message to the opposing side.’

‘I cannot speak highly enough of David Orta. He is deadly in a hearing or trial. In cross-examinations, he is professional while systematically dismantling the opposition.’

Key clients

B-Mex, LLC, B-Mex II, LLC, Oaxaca Investments, LLC, Palmas South, LLC, B-Cabo, LLC, Colorado Cancún, LLC, Santa Fe Mexico Investments, LLC, Caddis Capital, LLC, Diamond Financial Group, Inc., LLC, Family Vacation Spending, LLC, Financial Visions, Inc., J. Johnson Consulting, LLC, J. Paul Consulting, Las KDL, LLC, Mathis Family Partners, Ltd., Palmas Holdings, Inc., Trude Fund II, LLC, Trude Fund III, LLC, and Victory Fund, LLC v. the United Mexican States

Redwood Capital Management, LLC, on behalf of certain funds and accounts it manages or advises; Avenue Europe International Management, L.P., on behalf of certain funds that it manages; BlueMountain Capital Management, LLC; NB Distressed Debt Investment Fund Limited; NB Distressed Debt Master Fund LP; Beach Point Capital Management L.P.; Glendon Capital Management LP; ING Bank; Banco Bilbao Vizcaya Argentaria; Bankia, S.A.; Caixabank, S.A.Haitong Investment Ireland, P.L.C.; ; Banco Santander, S.A.; SC Lowy; and CarVal Investors

Alicia Grace, Ampex Retirement Master Trust, Apple Oaks Partners, LLC; Cambria Ventures, LLC; Carlos Williamson-Nasi, Axis Oil Field Services, S. de R.I. de C.V.; Axis Oil Field Holding, S. de. R.I. de C.V.; Clue, S.A. de C.V.; Carolyn Grace Baring; Diana Grace Beard; Floradale Partners, LLC; Frederick Grace; Frederick J. Warren; Gary Olson; Genevieve T. Irwin; Genevieve T. Irwin 2002 Trust; Gerald L. Parsky; John N. Irwin III; José Antonio Cañedo-White; Fideicomiso 305952; Nicholas Grace; Oliver R. Grace, III; ON% Investments, LLC; Rainbow Fund, L.P.; Robert M. Witt; Vista Pros, LLC; Virginia Grace; and other European investors

United Group BV, Adria Serbia Holdco BV & Serbia Broadband v The Republic of Serbia

Rasia v. Armenia

Compañía Minera Orlandini Ltda.

Crescent Petroleum Company International, Ltd. and Crescent Gas Corporation, Ltd

DP World v. Belgium

Reed Smith LLP

Distinguished by its growing profile for Latin America-related work, Reed Smith LLP is praised for its understanding of ‘the challenges and opportunities that arise from the region’s dynamic and diverse markets’. Frequently involved in commercial and investor-state cases, the team enjoys a particularly strong presence in energy and natural resources-related disputes, where it acts for major global energy companies. Additionally, the life sciences and shipping industries are significant sources of work. As a testament to its unique focus on Latin America, many of the department’s key names are based in Miami, including seasoned international arbitration specialist José Astigarraga; Francisco Rodriguez, who serves as vice-chair of the US international arbitration practice; Sandra Millor, who handles a range of cross-border arbitral and judicial disputes; and foreign legal consultant Gilberto Guerrero-Rocca. The deep bench also draws on Houston’s Francisco Rivero, who spearheads the Latin America business team, and New York-based James Duffy.

Practice head(s):

Francisco Rodriguez; José Astigarraga

Other key lawyers:

Sandra Millor; Gilberto Guerrero-Rocca; Francisco Rivero; James Duffy; Edward Mullins; Antoine Smiley


‘We value the team for its knowledge, experience, patience, good understanding, real interest and involvement in the case.’

‘The team resolves the questions parallel with any administrative procedures; it was like working as part of a single team with them.’

‘The firm has a deep understanding of the legal and cultural nuances of doing business in Latin America, as well as the challenges and opportunities that arise from the region’s dynamic and diverse markets.’


Among WilmerHale’s practice strengths, the international arbitration team stands out for its focus on IP-related matters, where it can work in conjunction with the wider firm’s premier patent litigation offering. Other core areas of expertise include energy, financial services, defense, and M&A-related disputes. Rachael Kent serves as vice chair of the global international arbitration group, where she contributes over 25 years of experience in commercial and investment disputes straddling both common law and civil law jurisdictions. Danielle Morris is noted for her strong recent run of investor-state cases, where she has predominantly represented investors in complex, multi-jurisdictional proceedings. The team also includes John Trenor, whose broad international arbitration experience encompasses commercial, investor-state and state-to-state matters. All named partners are based in Washington DC.

Practice head(s):

Rachael Kent

Other key lawyers:

Danielle Morris; John Trenor; David Bowker


‘A very diligent and client-driven team. It stands behind the agreed cap despite many issues during the process.’


BakerHostetler represents corporate and state clients across the full range of commercial and investor-state cases globally. The team’s arbitral experience is underpinned by a robust enforcement capability and it is widely recognized for its expertise in locating assets worldwide. Houston’s Sashe Dimitroff spearheads the practice globally and DC-based Analia Gonzalez heads the Latin America team. Additionally, Kenneth Reisenfeld, based in DC, leads the investor-state arbitration offering. In New York, international litigation head Gonzalo Zeballos also handles a significant volume of international arbitration work. Mark Cymrot has retired.

Practice head(s):

Analia Gonzalez; Kenneth Reisenfeld; Sashe Dimitroff; Gonzalo Zeballos

Other key lawyers:

Mary Kate Wagner; Marco Molina; Paul Levine

Key clients

Latam Hydro LLC and CH Mamacocha

Resolute Forest Products

Empresa Siderurgica Del Mutun

True Blue Development

ITG Brands, Commonwealth Brands, Liggett Group, Japan Tobacco USA, and others

China Telecom Global and China Telecom (Americas) Corp.

Hydra-Pro Dutch Harbor


Evoqua Water Technologies, successor to Siemens Industry

Superior Energy Services (as well as its subsidiaries Superior Energy LLC and Integrated Products Services)

Blackhawk Network, Blackhawk Network Holdings, and Blackhawk Network (Canada)

Work highlights

  • Successfully represented True Blue Development in an ICSID dispute against Grenada arising from the improper termination of the funding mechanism used to construct and develop a Kimpton luxury hotel project.
  • Acted for Towra SA-SPF, a Luxembourg investor, in a claim alleging that the Republic of Slovenia destroyed its €60m investment in Premogovnik Velenje, a majority-state-owned company that operates the Velenje coal mine.
  • Represented Latam Hydro, and its Peruvian subsidiary CH Mamacocha, in an $80m ICSID dispute, and related local arbitration, with the Republic of Peru.

Baker McKenzie LLP

Composed of ‘bright, persuasive and creative team-players’, Baker McKenzie LLP’s international arbitration group is distinguished by its ability to plug into one of the largest practices globally. Among its other core attributes, the US team stands out for its extensive national platform—which includes partners across the East and West Coasts—and also for its experience in major emerging markets, including former CIS states, Latin America and China. Recommended names include New York’s Andrew Riccio, who co-chairs the North America international arbitration practice; Houston-based senior counsel Brendan Cook, who specializes in construction, manufacturing and energy-related disputes; and ‘exceptionally talented partnerEugenie Rogers in Dallas.

Practice head(s):

Andrew Riccio

Other key lawyers:

Brendan Cook; Eugenie Rogers; Matthew Allison; David Zaslowsky


‘Exceptionally quick in assimilating and responding. Immediate grasp of the issues and steps to be taken. Reassuring, experienced, insightful professionals who were “onside” from the first moment.’

‘Lawyers stand out for their deep experience, professional reputation, mental agility through the provisions of law, dedication to solving and supporting the client with the issues on hand, cohesive team work, and clarity in process and communication, particularly Andrew Riccio and Matthew Allison.’

‘The group stands out for its ability to mobilize a diverse team (in terms of industry experience, nationalities, languages). Also for its ability to work together with local legal counsel.’

Key clients

Aroma Espresso Bar

Fluor Corporation

Vitaly Smagin

Work highlights

  • Represented Aroma Espresso Bar, particularly its affiliates Aroma Franchise Company and Aroma USA, in contentious award enforcement proceedings in Florida related to a Canadian arbitral award.
  • Represented Vitaly Smagin in efforts to enforce an LCIA arbitration award in excess of $80m against a California resident.

Clifford Chance

Demonstrating a marked focus on Latin America-related work, Clifford Chance’s international arbitration practice continues to grow its roster of investment cases seated in Washington DC, where it is currently acting on seven matters. The team additionally handled a slew of post-M&A disputes over the past year. Divided between New York and Washington DC, the group benefits from the ability to lean on the wider firm’s generous global network for cross-border support. In Washington DC, José García Cueto specializes in commercial and investor-state cases and is acting as lead, or co-lead, counsel in matters worth over $6bn. Anthony Candido is noted in New York.

Practice head(s):

José García Cueto

Other key lawyers:

Anthony Candido

Key clients

Odebrecht Latinvest

Enel Green Power Costa Rica CAM Enel Colombia

JLL Capital

Doups Holdings

Sepadeve International

Work highlights

  • Representing a Luxembourg investor in a $1.8bn ICSID arbitration investment claim concerning the termination of a pipeline concession.
  • Representing Enel Green Power Costa Rica CAM and Enel Colombia in an ICSID arbitration against Costa Rica seated in Washington DC concerning indirect expropriation and other breaches of an investment treaty by Costa Rica.
  • Representing JLL Capital in an ICSID dispute against Honduras arising out of the judicial expropriation of a company operating pay-day loans with employees of the public sector.

Cooley LLP

Continued global growth in technology-related arbitration, including investment cases, is positioning Cooley LLP as an increasingly prominent name in the international arbitration field. That being said, the team’s industry experience extends beyond the firm’s signature sweet spots of technology and life sciences to encompass mining and financial services, among other matters. Over the past year, New York-based department head Rachel Thorn notched up key roles in a string of high-profile cases, including representing Odyssey Marine Exploration in an ICSID arbitration brought under Chapter 11 of the NAFTA against Mexico. Marc Suskin, also in New York, has recently handled arbitrations for many of the world’s leading tech companies.

Practice head(s):

Rachel Thorn

Other key lawyers:

Marc Suskin; Jason File

Key clients



Zoom Video Communications






Jazz Pharmaceuticals

Neurocrene Biosciences



Work highlights

  • Representing Google in numerous matters, including in an ICDR dispute against Hong Kong-based advertising company, Avazu Jupiter, and non-signatories, Avazu, DotC United and DotC Pte Ltd.
  • Representing Odyssey Marine Exploration in an ICSID arbitration brought under Chapter 11 of the NAFTA against Mexico.
  • Representing Seagen in a petition to vacate an arbitration award rendered in an ICDR-administered AAA arbitration against Daiichi Sankyo regarding Seagen’s core technologies.

Dechert LLP

Dechert LLP’s global international arbitration practice leans on well-staffed platforms in many of the world’s principal arbitration hubs, including London, Paris and Hong Kong. Striking a balance between commercial and investor-state work, the team represents a range of investors, corporations, sovereign nations and state-owned entities, with an emphasis on the financial services, energy, mining, construction and TMT industries. From bases in Washington DC and London, Arif H. Ali co-chairs the international arbitration and public international law group and is lauded as a ‘heavyweight figure in the world of arbitration’. The Washington DC team also includes experienced arbitration partner Alexandre de Gramont and newly promoted counsel David Attanasio.

Practice head(s):

Arif H. Ali

Other key lawyers:

Alexandre de Gramont; David Attanasio; Michael Losco


‘The team not only consists of a group of excellent lawyers, but the group also works seamlessly as a team. The level of coordination and participation of its team members on all levels is just remarkable.’

‘Arif Ali, the lead partner of the group, is a heavyweight figure in the world of arbitration internationally. Very quick in grasping the key points of the case, he always has an out-of-the box view and solution to an issue.’

‘Alexandre de Gramont is a very fine legal mind. Michael Losco has grown up the ranks to mature into a very strategic and resourceful young lawyer.’

‘ David Attanasio is a great legal thinker in the field of international law and it is very hard to find a point of international law that he does not have great knowledge about.’

Key clients

MOL Hungarian Oil and Gas PLC (MOL)


The Republic of Ecuador

Altanovo (formerly known as Afilias USA)

The Republic of Poland

Work highlights

  • Representing MOL Hungarian Oil and Gas in a dispute with the Republic of Croatia relating to Croatia’s breach of its contractual obligation to maintain certain royalty rates for hydrocarbon production.
  • Representing the Republic of Poland in recognition and enforcement proceedings before the US District Court for Massachusetts arising from the costs award in favor of Poland in an ICSID Additional Facility arbitration.
  • Representing Altanovo in its efforts to obtain the rights to the ‘.web’ new generic top-level domain name (gTLD), through a second arbitration proceeding.

DLA Piper LLP (US)

DLA Piper LLP (US)’s international arbitration practice impresses with its ability to ‘greatly capitalize on its international presence’, as evidenced by a recent case list that has seen the team act alongside lawyers in Canada, Colombia and Mexico. The group additionally stands out for its extensive experience in Latin American markets, with a focus on infrastructure, energy and natural resources disputes. Global department co-chair Kate Brown de Vejar splits her practice between New York and Mexico City, where she represents corporations, sovereign states and state-owned enterprises in commercial and investor-state disputes. Also in New York, Kiera Gans is building a strong reputation for investment treaty arbitration.

Practice head(s):

Kate Brown de Vejar

Other key lawyers:

Kiera Gans; James Berger; Charlene Sun; Elena Rizzo


‘The team is very responsive and flexible. The team is also very broad; it can bring in any expertise you need at short notice. Lawyers are smart, think out-of-the-box and present solutions that I have not seen others do.’

‘James Berger is our main contact. We are big fans of his work. He is always in control in difficult situations. He is a very good strategic advisor and also a very good litigator.’

‘It seems like an excellent team working cooperatively and carefully to clarify the truth.’

‘Exceptional knowledge of the subject, attention to detail and very realistic vision with regards to the timeline and the budget.’

‘James Berger and his team delivered an incredible performance and — dare I say it — under the budget! Great team work, available seven days a week with a non-nonsense approach.’

‘This is a team which was able to greatly capitalize on its international presence with people with different skills, languages and perspectives. I found it refreshing to have a lot of diversity with many team members being women.’

‘I worked with several members of the team and I found the culture very collaborative. Lawyers could leverage their insights from other matters elsewhere in the world to make compelling arguments in the matter I was involved with.’

‘I enjoyed working with Kiera Gans and associate Elena Rizzo. Both were very accessible, good communicators and helped manage a very trying matter with uncertain facts. They worked closely with us on various elements of the case and were true partners in helping the client shape the appropriate narrative.’

Key clients

Goldgroup Resources

Government of the Republic of Lithuania

Gebre LLC

Cube Infrastructure Managers

Olin Holdings

Rusoro Mining

De Well Container Shipping

Acorda Therapeutics

Moussy Salem

Third Eye Capital

Work highlights

  • Successfully represented Rusoro Mining in efforts to enforce an arbitration award against Venezuela arising out of the expropriation of Rusoro’s gold mining assets.
  • Successfully represented the Republic of Lithuania in an investment treaty case brought by a Russian fund concerning the nationalization of Bankas Snoras.
  • Represented GoldGroup Resources in submitting a claim to arbitration, under the sunset clauses of the USMCA and NAFTA Chapter 11, against Mexico.

Eversheds Sutherland

Commended for its broad global coverage, Eversheds Sutherland stands out for its ‘hands-on experience of diverse institutional arbitration settings and cultures’. The group handles a mix of commercial and investor-state cases, where it specializes in representing corporations and high-profile investors in arbitral proceedings and connected enforcement actions. From New York, Meriam Nazih Al-Rashid co-chairs the global international arbitration practice and also co-heads the Latin America arbitration team; she is noted for her broad public international law practice, which spans the full range of arbitral disputes. Key names in Washington DC include William O’Brien, who heads the cross-border litigation and international arbitration group, and John Lomas, whose work encompasses judicial and arbitral proceedings.

Practice head(s):

Meriam Nazih Al-Rashid; William O’Brien

Other key lawyers:

John Lomas; Ulyana Bardyn; Levon Golendukhin


‘A truly international practice, with hands-on experience of diverse institutional arbitration settings and cultures. The team is extremely well-grounded in both the substantive law and the institutional arbitral framework and practice.’

‘William O’Brien is an extremely competent and knowledgeable lawyer, who is very responsive, pleasant to work with and highly cooperative. He is also a very dedicated professor and a great mentor to students.’

Key clients

Honwood Services

Future Pipe International

R.W. Chelsea Energie (formerly Symbion Energy Holdings)

Work highlights

  • Represented Honwood Services in an approximately €1.4bn dispute arising out of Poland’s Ministry of Environment’s treatment of Honwood’s potash mining project.
  • Represented Future Pipe International in a $240m investment treaty case against the Arab Republic of Egypt.
  • Represented R.W. Chelsea Energie (formerly Symbion Energy Holdings) in a $50m ICDR arbitration.

Gibson, Dunn & Crutcher

Gibson, Dunn & Crutcher LLP’s international arbitration group frequently works alongside the firm’s litigation lawyers to provide integrated advice on multi-jurisdictional arbitral disputes and related litigation—including enforcement actions. The group typically represents corporate clients in commercial and investor cases worldwide, where it often forms cross-office teams with arbitration specialists in London and Dubai. New York-based Rahim Moloo co-heads the global practice and, together with the litigation team, recently represented Jay-Z in a dispute with Bacardi, which involved a series of ICDR arbitrations and parallel litigation. The group also draws on New York’s Lindsey Schmidt, whose practice spans arbitral and judicial disputes, and talented of counsel Ankita Ritwik, who is based in Washington DC.

Practice head(s):

Rahim Moloo

Other key lawyers:

Lindsey Schmidt; Ankita Ritwik; Charline Yim

Key clients

Crystallex International Corporation


Liberty Mutual

Agility Public Warehousing Company

Jay-Z / SCLiquor

Angel Samuel Seda et al.

Corral Morocco Holdings



Yukos Capital

Herbert Smith Freehills

Herbert Smith Freehills’ New York-based international arbitration offering is a key pillar in the firm’s global Latin America practice, and it draws on dual-qualified lawyers admitted in Argentina, Ecuador, and Chile, as well as New York. Alongside its Latin America activity, the team stands out for its oil and gas expertise, where it counts global energy majors such as Chevron among its clients. US arbitration head Christian Leathley additionally co-leads the Latin America practice; he successfully represented Andes Petroleum Ecuador in a dispute seeking to recover its 40% share of a $1bn arbitral award. Amal Bouchenaki is recommended for her diverse multi-jurisdictional experience, with an emphasis on Latin America and the MENA region. Florencia Villaggi has left the firm.

Practice head(s):

Christian Leathley; Amal Bouchenaki

Other key lawyers:

Benjamin Guthrie; Daniela Páez


Technically brilliant partners and associates.

Key clients

Saudi Arabian Chevron and Chevron Corporation

Andes Petroleum Ecuador

Republic of Italy

Sigma Constructores

Work highlights

  • Represented Chevron Corporation in its defense against an $18bn sham arbitral award issued against Chevron and Saudi Aramco by a corrupt arbitration center in Egypt.
  • Represented Andes Petroleum Ecuador in an arbitration in which Andes sought to recover its 40% share of a $1bn arbitral award from Occidental Exploration and Production Company.
  • Represented the Republic of Italy in relation to two enforcement actions in the US courts.

Jones Day

Forming a key part of an integrated global disputes offering, Jones Day’s US group benefits from the ability to draw on international arbitration specialists in many of the world’s leading arbitration centers, with recent cases involving teams in London, Singapore, Paris, and Dubai, among others. The team has notched up a strong run of investment disputes of late, where it is particularly active against various post-Soviet and CIS states in ICSID and UNCITRAL cases. In Washington DC, Melissa Gorsline is a ‘very sharp and highly skilled advocate’ and possesses extensive experience in investor-state arbitrations. Also noted are Steven Smith in San Francisco; Stephen Pearson, based between New York and London; and Paul Hines in San Francisco.

Other key lawyers:

Melissa Gorsline; Steven Smith; Fahad Habib; Paul Hines; Maria Pradilla Picas


‘A very talented team that is able to focus on key issues and provide a tailored service. Often competitors will use a blanket approach of trying to cover every angle of the case, even when it is unnecessary, resulting in inefficiency and much higher cost. Jones Day should be highly commended for its approach.’

‘Melissa Gorsline in Washington DC is a very sharp and highly skilled advocate. One of the best in the cross examination of witnesses.’

‘Associate Maria Pradilla Picas in Washington DC is always on top of the detail and projects boundless enthusiasm.’

Key clients

World Wide Minerals

Gold Pool JV

Omega Engineering


Mr Abed El Jaouni

Work highlights

  • Represented Canada’s World Wide Minerals in its treaty claims against the Republic of Kazakhstan, arising out of the expropriation of its mining assets in the late 1990s.
  • Represented Gold Pool in bringing an application in the English Commercial Court pursuant to Section 67 of the Arbitration Act (involving a full re-hearing of the issue of jurisdiction).
  • Acted for Estonia-headquartered Windoor in an ICSID arbitration involving claims against the Republic of Kazakhstan.

Latham & Watkins

Latham & Watkins’ ‘very professional, diverse and proactive team’ continues to make inroads into the international arbitration market under global department co-chair John Pierce in New York. Pierce has particularly boosted the firm’s capability in investment disputes, where it acts for a growing mix of states, state-owned entities and investors in high-stakes cases. That being said, the group also handled a significant volume of commercial matters over the past year, with an emphasis on post-M&A disputes. Other key contacts include New York-based counsel Santiago Bejarano, who is dual-qualified in New York and Colombia and is an increasingly prominent name for Latin America-related work.

Practice head(s):

John Pierce

Other key lawyers:

Santiago Bejarano


‘An excellent, very professional, diverse and proactive team. Lawyers are always right to the point, extremely client-focused and solution-oriented!’

‘John Pierce is THE star! Always available!’

‘A top-notch team. Counsel Santiago Bejarano is excellent.’

‘We have worked several times with the team, as well as against them. Very strategic, accurate, diligent, and efficient. Lawyers really know how to litigate successfully. We have also worked with their associates, very good lawyers as well. The whole team is sensational.’

Key clients

Mason Capital LP and Mason Management LLC

Novenergia Il Energy & Environment (SCA), SICAR

Dominican Republic

Work highlights

  • Representing a global private equity firm in a $700m M&A-related arbitration under SIAC rules concerning telecoms assets.
  • Representing an international consortium of industrial companies in an ICC arbitration seated in Geneva concerning claims under a mine exploitation agreement with a West African state.
  • Representing the Dominican Republic in an arbitration brought by EnviroGold (Las Lagunas) in relation to the Dominican Republic’s alleged violations of an investment agreement.

Paul Hastings LLP

Paul Hastings LLP‘s international arbitration group finds favor for its ability to ‘address the most complex international IP disputes’. Alongside its strength in IP-related proceedings, where it is particularly active in the pharmaceutical space, the team is also recognized for its strong skill sets in political risk and international trade credit insurance. Based in Washington DC, global department co-chair Joseph Profaizer acts as both litigator and arbitration counsel, with a focus on international disputes. Igor Timofeyev, also in Washington DC, maintains a broad disputes practice that intersects international arbitration, appellate litigation and regulatory proceedings. Jonathan Hamilton, a DC-based specialist for Latin American arbitration proceedings, joined the team from White & Case LLP in March 2024.

Practice head(s):

Joseph Profaizer

Other key lawyers:

Igor Timofeyev; Bruce Wexler; Adam Weiss; Sachiko Taniguchi; Jonathan Hamilton


‘The team demonstrates outstanding knowledge and deep insight in the pharmaceutical industry. Highly experienced lawyers in international Arbitration.’

‘Joseph Profaizer is a highly experienced lawyer in international arbitration. Associate Sachiko Taniguchi stands out for her great coordination and management skills.’

‘Paul Hastings has a deep bench of experts able to address the most complex international IP disputes. Paul Hastings is a go-to firm for the must-win disputes.’

‘The team is made up a diverse group of technical, litigation and multilingual specialists. Depending on the size of the project, the team staffs the project accordingly and takes into account budgetary concerns.’

‘Bruce Wexler is a standout lead counsel, with the experience to manage high-value, complex, global multi-jurisdictional IP disputes. He is a key strategist with a deep understanding of IP and IP disputes, with the ability to pull off important wins.’

Key clients

Aetos Capital Real Estate

American International Group (AIG)

Bloom Energy

Chubb Insurance

Daiichi Sankyo Company


Everest Re

Hitachi Construction Machinery

Lotte Chemical

Mitsubishi Tanabe Pharma Corp

Nu Dotco

Otsuka Pharmaceutical

Squire Patton Boggs

Squire Patton Boggs continues to gain traction in investment treaty work, particularly on the state-side where the wider global international arbitration group now represents twenty-eight sovereign nations. It has also carved out a significant niche in energy disputes, with a lengthening raft of global energy corporations—including state-owned entities—turning to the team for support. Stephen Anway co-chairs the global practice from the US, where he splits his time between New York and Washington DC; he is representing Slovakia, Romania, and Iraq in arbitral disputes, among others. The team also includes Luka Mišetić, who specializes in cases involving Central and Eastern Europe; Charles Rosenberg, who recently joined from King & Spalding LLP; and senior associate Carlos Guzmán Plascencia—all are in New York. Miriam Harwood has left the firm.

Practice head(s):

Stephen Anway

Other key lawyers:

Luka Mišetić; Charles Rosenberg; John Branson; Ali Gursel; Carlos Guzmán Plascencia; Raul Mañón; Douglas Pilawa


‘The team’s strength lies in its communication with clients, both on the subject matter of the arbitration and on other, more administrative, matters. The team delivers on time and produces high-quality documents which are accurate and concise.’

‘Douglas Pilawa is very astute in identifying the pertinent issues in international disputes and quick to grasp and understand complex and technical matters. I have no hesitation in recommending Douglas for international arbitrations.’

Key clients

Edison SpA


Republic of Costa Rica

Turkmenistan and Turkmenhimiya

Rand Investments

Slovak Republic

Republic of Ecuador

The Republic of Kosovo

Petróleos de Venezuela (PDVSA) and its subsidiary Bariven

Republic of Romania

Republic of Croatia

Republic of Peru

Government of Panamá

Republic of Iraq

Work highlights

  • Secured a victory for the Republic of Croatia in an investment treaty arbitration brought under the Germany-Croatia BIT.
  • Scored three consecutive victories for the Republic of Kosovo in three separate ICC investment arbitrations totaling over €100m.
  • Represented Turkmenistan in an ICSID investment arbitration against a Russian investor, the largest mobile network operator in Russia.

Vinson & Elkins LLP

Vinson & Elkins LLP’s group is widely acknowledged for its ability to bring together ‘expertise in international arbitration and upstream oil and gas contracts’. Indeed, the team utilizes the wider firm’s dominant oil and gas practice to specialize in energy-related disputes, where it acts for both energy companies and sovereign states in commercial and investor-state cases. The group also garners a significant volume of construction and project-related work. From bases in Houston and Dubai, James Loftis steers the international dispute resolution department and focuses on energy, construction and infrastructure disputes. Key names in New York include Camilo Cardozo, who serves as head of international disputes for the Americas, and José Sanchez.

Practice head(s):

James Loftis; Camilo Cardozo

Other key lawyers:

José Sanchez; Peter Danysh


‘The team is well-organized, and always prepared and prompt in its submissions. Each of the team are experts, knowledgeable, resourceful and very forceful in both written and oral argument. In addition, they have shown admirable patience and perseverance during hearings.’

‘Each legal member is an expert by himself/herself, very courteous, very professional in their approach. Each one of the team speaks with command.’

‘Houston office combines the firm’s experience and expertise in international arbitration and upstream oil and gas contracts. V&E in London and Houston work seamlessly as one team without duplication of effort.’

‘James Loftis is a very capable litigator with a deep understand of the oil & gas industry. I have found the team’s judgment to be spot on. Our case is handled by a small and focused team that operates in an effective and cost-efficient manner – just the way we like it.’

‘The team is committed to providing steadfast client dedication, placing a paramount focus on meeting unique needs. We highly value effective communication, and the firm’s bilingual language proficiency in both English and Spanish provides a significant advantage.’

‘The team’s familiarity with both local and international arbitrators empowers us to select the most suitable arbitrators, ensuring a fair and favorable arbitration process.’

Key clients

Panama Canal Authority

Nam Tai Property

Upland Oil and Gas LLC, Sucursal del Peru and Upland Oil and Gas LLC

Ministry of Oil of the Republic of Iraq

University of Ghana

Khaitan Holdings (Mauritius)

Tampico Beverages

Basrah Oil Company

Offshore Exploration and Production LLC

Winston & Strawn LLP

During 2023, Winston & Strawn LLP ’s international arbitration practice handled a broad array of commercial and investment disputes, with notable activity in the financial services, TMT and energy and natural resources spheres. The team also continues to strengthen its Latin America disputes offering, where it is currently acting on cases involving Panama and Venezuela, among other jurisdictions. Chicago-based Ricardo Ugarte is a seasoned litigator and arbitration counsel with robust experience under key arbitral rules, including UNCITRAL, ICC and ICSID. Also noted are Miami-based Gustavo Membiela, who has an emphasis on Latin American disputes, and Houston’s Imad Khan, who was recently promoted to partner.

Practice head(s):

Ricardo Ugarte

Other key lawyers:

Gustavo Membiela; Imad Khan


‘Ricardo Ugarte and Imad Khan provide a very client-focused approach and are always thinking and asking about client needs- they are open to creativity. On the actual work, they are open to working collaboratively with in-house counsel to achieve the best result for the client. ’

‘W&S’s international treaty arbitration team helped identify, build and obtain funding for the case, taking a highly commercial approach while demonstrating deep understanding of the legal framework, including ongoing developments in the law and political dynamics.’

‘Ricardo Ugarte is a very impressive practitioner, highly commercial and experienced and, importantly, willing to invest time in the right case to bring it to the funded stage. He has built a significant level of trust with us as client.’

‘I have worked with Imad Khan for many years. He is very well versed in international arbitration and a great person to work with. He is my first call for any international issues.’

Key clients

Dominion Minerals Corp.

Banco San Juan Internacional

SunTech Power Holdings Co.

Work highlights

  • Representing Avanzalia in a $200m+ dispute concerning efforts to block its ability to connect its solar power plant to a Panamanian substation owned by the defendant.
  • Representing Suntech Power International in a dispute filed under the Energy Charter Treaty to recover damages from the Republic of Italy arising from Italy’s removal of feed-in-tariffs.
  • Representing Banco San Juan Internacional in connection with a UK judgment enforcement action against Petróleos de Venezuela et al.

A&O Shearman

Leveraging its prominent global projects practice, A&O Shearman possesses extensive experience in construction disputes, particularly in relation to power, mining and infrastructure projects in the US, Latin America and the Middle East. The team also handles commercial cases involving the technology and life sciences sectors, while it is additionally well versed in investor-state disputes—as evidenced by its recent work for the Republic of Panama in treaty claims. Key contacts in the US group include Christopher Ryan, who operates from Washington DC and New York; and New York-based of counsel Henry Weisburg.

Practice head(s):

Christopher Ryan

Other key lawyers:

Henry Weisburg

Key clients

Republic of Panama

OHL and Orascom Construction

Nevada Copper Incorporated

ENKA (Chubb)

Work highlights

  • Represented the Republic of Panama in treaty claims brought by Omega Engineering LLC and Mr Oscar Rivera.
  • Represented OHL Internacional and Contrack (Cyprus), as respondents, in an ICC arbitration in London initiated by the Qatar Foundation for Education, Science and Community Development.
  • Represented Enka Insaat ve Sanayi in proceedings before the US District Court for the District of Columbia seeking the confirmation of a $47m award rendered in an ICC arbitration against Gabon.


Dentons‘ practice handles both domestic and international arbitrations and brings experience in handling cases under various global arbitral rules, including ICDR, ICC, LCIA, HKIA and UNCITRAL. The team is particularly well-positioned to advise on multi-jurisdictional commercial and investor-state cases, where it can benefit from its ability to link up with its wider global arbitration offering. New York-based John Hay heads the international dispute resolution group for the US and is equipped to advise on the full range of arbitral proceedings. Fellow New York-based partners Diora Ziyaeva and Anthony Ullman also maintain significant arbitration practices.

Practice head(s):

John Hay

Other key lawyers:

Diora Ziyaeva; Kristen Weil; Anthony Ullman


‘The construction/international arbitration practice is highly competent. The team has the ability to deal with complex construction and infrastructure issues in dispute. The partners and associates are easy to converse with and available to answer questions and deal with issues.’

‘The individuals I worked with were extremely efficient and have the ability to deal with the changing needs of disputes throughout the arbitration process. Key partners from my experience: John Hay and Kristen Weil.’

Key clients

Aris Mining Corp

GA Telesis LLC

Frontera Resources Corporation

Work highlights

  • Represented Canadian gold mining company, Aris Mining Corp, in an ICSID arbitration against the Republic of Colombia, worth approximately $300m.
  • Obtained a $22m LCIA award on behalf of US aviation company, GA Telesis, against Transaero, formerly Russia’s second-largest commercial airline currently undergoing bankruptcy.
  • Secured a $13m ICC award for GA Telesis against Transaero.

K&L Gates

Demonstrating broad geographical reach, K&L Gates’ international arbitration group represents a mix of sovereign and corporate clients in cross-border proceedings under ICSID, LCIA, ICC and ICDR rules, among others. The team’s ability to draw on its lawyers’ combination of judicial and arbitral experience also ensures that it is often selected to handle parallel litigation, including enforcement actions. Most notably, it is defending the Kingdom of Spain before US District Court in a case seeking to enforce a €291m ICSID Award. New York-based Matthew Weldon ‘is not afraid to get stuck in when the going gets tough.’

Practice head(s):

Matthew Weldon

Other key lawyers:

Thomas Holt


‘My speciality is international investment arbitration, and this is the only branch of international arbitration I am able to comment on. Within that area the firm is one of the leading ones. I have found the team to be highly efficient and well respected.’

‘I have worked with Matthew Weldon and I found him very knowledgeable and able.’

‘A strong arbitration practice, including a notable ability to oversee multi-jurisdictional matters and liaise with (e.g.) English barristers and solicitors in London-seated arbitrations under English law.’

‘Matthew Weldon is a stand-out performer. He is good at managing clients, carries a heavy caseload with apparent ease, and is not afraid to get stuck in when the going gets tough.’

Key clients

Kingdom of Spain

Government of Romania

Republic of Italy Ministry of Economic Development

Rolls Royce Power Solutions

Petaquilla Minerals


Chicago Bridge & Iron Company (CB&I) now McDermott

Work highlights

  • Defending the Kingdom of Spain in US District Court against a petition made by NextEra Energy Global Holdings et al to enforce a €291m ICSID Award.
  • Representing the Government of Romania in related matters, including three appeals, a US District Court action and an ICSID proceeding.
  • Representing Cipla in a London-seated consolidated LCIA arbitration against a US-based licensee in relation to the blockbuster drug, Rifaximin.

Mayer Brown

The international arbitration group at Mayer Brown is valued for its ‘deep knowledge of the energy sector’, which was recently evidenced by its involvement in several commercial and investor-state disputes on behalf of global oil and gas companies. The team also has experience in representing sovereign states in investment cases, with the Islamic Republic of Pakistan a representative client in this sphere. New York’s Ted Howes heads a robust US practice that also includes arbitration and litigation partner Michael Lennon, who works from Houston and London. In September 2023, international arbitration specialist David Weiss joined in Houston from King & Spalding LLP.

Practice head(s):

Ted Howes; Michael Lennon

Other key lawyers:

Luc Mitchell; Jennifer Huang; David Weiss


‘An excellent team with deep knowledge of the energy sector; the ability to deal with highly complex demands; and, especially, with the structure to handle litigation where the involvement of several specialists is necessary.’

‘Michael Lennon is an attorney with experience in energy disputes and has unparalleled knowledge among his peers.’

‘The team answered every one of our questions on the day we sent them.’

Key clients

Lion Mexico Consolidated


Nestlé USA and Nestlé Middle East

Islamic Republic of Pakistan

Work highlights

  • Representing the Islamic Republic of Pakistan in ICSID annulment proceedings and on resisting the enforcement of an award.

McDermott Will & Emery LLP

Demonstrating a growing focus on energy and construction disputes, McDermott Will & Emery LLP is equipped to advise on both commercial and investor-state cases. Split between Washington DC and New York, the two-partner team also benefits from its ability to lean on partners across Europe. Washington DC-based global department co-head Lisa Richman impresses with her ‘friendly but deadly and effective cross-examination style’; she has recently handled a slew of cases in the energy and life sciences spheres. In New York, David Kiefer specializes in judicial and arbitral matters arising out of construction and engineering disputes.

Practice head(s):

Lisa Richman

Other key lawyers:

David Kiefer; Maria Cristina Rosales del Prado


‘In Washington DC, Lisa Richman is a very strong, very well-known international arbitration lawyer.’

‘Lisa Richman is by far the most talented lawyer I have ever worked with. She is an absolute work-horse, she is articulate and creative. I have seen her craft closing arguments overnight that you would think she had several weeks to work on. She has a friendly but deadly and effective cross-examination style.’

Key clients


CGI Technologies and Solutions

Bausch Health / Salix

Global Healthcare Company

US Parent company of a global medical device company

US subsidiary of one of the world’s largest wine companies

Distributor of alcoholic beverages

Work highlights

  • Advised the US subsidiary of a global technology services company in settling two separate related ICDR arbitration disputes.

Pillsbury Winthrop Shaw Pittman LLP

Pillsbury Winthrop Shaw Pittman LLP’s international arbitration practice is able to draw on specialist partners in the US, the UK, Japan and China. The team is particularly well positioned to handle international trade disputes, where Washington DC-based Stephan Becker is recommended for his recent work representing Mexico in an UNCITRAL arbitration filed under NAFTA. Other key contacts include Richard Deutsch in Houston; Michael Jaffe in Washington DC; and New York's Derek Soller.

Practice head(s):

Richard Deutsch; Michael Jaffe; Derek Soller

Other key lawyers:

Robert Sills; Charles Conrad; Stephan Becker


‘Derek Soller is an absolute star. Deeply committed, incredibly competent and a joy to interact with. Although the matters we have entrusted to him are crucial to the business and extremely complex, Derek deals with them lightly and proficiently, keeping an eye on the client’s pains, which include cost.’

‘Pillsbury’s team has several qualities that makes it unique including: hands-on, all the partners I have interacted with are always aware, available and ready to act; thorough. the partners know the cases and understand the core of the problems; profound, the legal analysis go beyond what is easily seen.’

‘I would like to stress the experience and thoroughness of Robert Sills and the practical and hands-on -but profound- approach of Charles Conrad.’

‘Extensive in-depth experience in investor-state arbitrations.’

‘Stephan Becker has been counsel on investor-state arbitrations for three decades, on over three dozen arbitrations. He understands the policy, procedure and substantive obligations. He is my go-to US lawyer for referrals.’

Key clients

Amec Foster Wheeler USA Corporation

United Mexican States – Secretaria de Economia

Zhongzhi Enterprise Group, et al

Smart City Solutions Holdings

Work highlights

  • Representing Amec Foster Wheeler USA Corporation in an investor-state action against the Republic of Colombia pursuant the US-Colombia FTA.
  • Representing the United Mexican States – Secretaria de Economia in claims brought by Odyssey Marine Exploration arising out of Mexico’s denial of an environmental license to mine deep sea phosphate deposits.
  • Representing United Mexican States – Secretaria de Economia in claims relating to the Mexican government’s modification of the terms of a concession for the replacement, installation and maintenance of taximeters in Mexico City.