McDermott Will & Emery AARPI > Paris, France > Firm Profile
McDermott Will & Emery AARPI Offices

23 RUE DE L'UNIVERSITÉ
75007 PARIS
France
McDermott Will & Emery AARPI > The Legal 500 Rankings
France > Industry focus: Healthcare and life sciences Tier 1
The ‘undeniably competent‘ team at McDermott Will & Emery AARPI stands out for its M&A and licencing work, advising key pharmaceutical manufacturers on strategic matters. At the forefront of science, the team handled the acquisition of SK Holdings on behalf of Yposkesi, the first French pharmaceutical manufacturer dedicated to the production of gene and cell therapy drugs for rare diseases. The team is led by Emmanuelle Trombe and Anthony Paronneau, who are known for their ‘great legal skills as well as for an incomparable knowledge of the life sciences sector.’Practice head(s):
Other key lawyers:
Testimonials
‘An undeniable competence, a commitment beyond expectations, a permanent availability.’
‘This firm combines (i) high quality of legal advice, (ii) humility and (iii) sympathy in daily exchanges.’
‘The team offers a complete service offer for emerging biotechnology companies: assistance with fundraising, signing of partnerships, setting up of stock options… always with a responsive approach and accurately adapted to the needs of the client.’
‘A strong capacity to listen to the client, but also to the opposing party, allows us to bring a new perspective on the negotiations in progress and to improve our position. Anthony Paronneau’s competence and availability make him an ideal partner: the quality of his analyses and his level of commitment are exceptional.’
‘Multi-disciplinary and very international team. Capable of adapting to small life sciences clients, but also to large clients given their activity with these two types of players.’
‘Emmanuelle Trombe, Anthony Paronneau and their teams combine human qualities and great legal skills, as well as an incomparable knowledge of the life sciences sector.’
‘Very good personal and human connection. Friendly and attentive team.’
‘Emmanuelle Trombe is an excellent lawyer, with good business acumen, and always available.’
Key clients
Corlieve Therapeutics
Gamut Therapeutics
Voluntis
Diagenode
Yposkesi
Pierre Fabre
L’Oréal
AbolerIS Pharma
Novadiscovery
Kurma Partners
Advent France Biotechnology
Work highlights
- Advised Yposkesi, the first French pharmaceutical manufacturer dedicated to the production of gene and cell therapy drugs for rare diseases, on its acquisition by SK Holding, a South-Korean investment conglomerate.
- Acted as counsel for Gamut Therapeutics, a biotechnology company developing a unique gene-independent approach to treat advanced stages of rod and cone dystrophies, in relation to its merger with SparingVision.
- Assisted therapeutic AI pioneers Diabeloop SA, a new client of the firm, with two transactions: a joint development agreement with Terumo Medical Corporation; and a partnership with Roche Diabetes Care.
France > Private equity: LBO Tier 2
McDermott Will & Emery AARPI continues to build up its Paris private equity team with the arrival of Guillaume Kellner from Paul Hastings LLP in December 2020, further strengthening the practice’s capabilities in infrastructure deals and investment funds mandates. Focusing on mid-cap mandates, Grégoire Andrieux represents sponsors and management teams in LBOs, MBOs, VC funding, disposals and debt restructuring. Henri Pieyre de Mandiargues advises sponsors and investment vehicles on LMBOs and LMBIs. Drawing on the firm’s capabilities in tax, merger control, employment and regulatory services, the group is particularly active in the healthcare, life scenes and technology sectors.Practice head(s):
Grégoire Andrieux; Henri Pieyre de Mandiargues
Other key lawyers:
Guillaume Kellner; Diana Hund
Key clients
Labelium
Quilvest Capital Partners
Kamet Ventures
Azulis Capital
Montefiore Investment
HLD
Groupe IDI
Greenworking
Tiller Systems
Abénex
ISAI
Ardian Growth
BNP Paribas Développement
Bridgepoint Development Capital
Qualium Investissement
G-Square
Ovrsea
Andera Partners (ActoMezz)
Calcium Capital
Playrion
Cofigeo
Diabeloop SA
Work highlights
- Advised Sogetrel and its management on part of the sale of Latour Capital’s shares in Sogetrel to its management team, supported by a consortium of investors.
- Represented Abénex Capital, a pioneer in the French private equity market, in the sale of education group EUREKA, a player in private professional and higher education, to Naxicap Partners.
- Advised Cafpi, a real estate brokerage network, in connection with the opening of its capital to the investment fund BlackFin Capital Partners.
France > Administrative and public law Tier 3
McDermott Will & Emery AARPI‘s practice is particularly well known for its strong sector approach. The firm notably advises leading players in the energy and telecoms sectors on strategic regulatory, public contracts and public law matters. Increasingly, the team is involved in the transport sector; it recently won a high-profile case regarding the legality of state aids provided to a public maritime transport line before the administrative court of appeal. Lately, the team has also handled significant work concerning healthcare and life-sciences product regulation, notably handling a strategic dispute regarding the sale of prescription drugs online. Sabine Naugès and Laurent Ayache co-head the practice, which also includes Charlotte Michellet who made counsel in 2021.Practice head(s):
Sabine Naugès; Laurent Ayache
Other key lawyers:
Testimonials
‘A solid, responsive team, attentive to clients’ concerns and issues at hand; great transparency in invoicing.’
‘Great courtesy, which makes the working relationship very pleasant; exceptional quality of writing which allows the client to easily grasp analyses and legal opinions; cutting-edge expertise that adapts to the operational environment and that can be used and understood by the company.’
‘Very responsive and a permanent attention to problems and opportunities.’
‘High availability.’
‘Very competent; great strategists.’
‘Excellent advice on regulated sectors.’
‘Sabine Naugès’ expertise is particularly suited for public law litigation concerning regulatory decisions.’
‘Very high availability and responsiveness; very high added value advice.’
Key clients
Orange Group and its subsidiaries (Orange Marine, Orange RDC)
Engie and its galaxy (SHEM, Climespace, GRDF)
Groupe Action Logement
Aéroports de Paris (ADP)
Arriva Plc
Corsica Ferries
Remington Seeds
IPC Petroleum (ex-Lundin), Geopetrol and BridgeOil
Pearson
Chambre de Commerce et d’Industrie du Var
Work highlights
- Assisting Orange with a very high-profile dispute relating to 5G regulations.
- Advised Vallourec on economic sanctions pronounced against it in Europe and the USA and on customs law issues.
- Advising Engie on regulatory issues.
France > Banking and finance: transactional work Tier 3
Pierre-Arnoux Mayoly, who leads the banking practice at McDermott Will & Emery AARPI, has extensive experience of advising on fund finance transactions involving equity bridge and capital call facilities. The firm has a well-established reputation among leading financial institutions, private equity funds and debt funds. The group is also recognised for its work in mezzanine and unitranche financing and bond issuances.Practice head(s):
Pierre-Arnoux Mayoly
Testimonials
‘Very good financing team working mainly on the sponsor side in acquisition financing and on the lender side in fund financing.’
‘Pierre Arnoux Mayoly is a very good, pragmatic and efficient lawyer.’
Key clients
Abénex
Tikehau Capital
Capza
Andera Partners
RBC (Royal Bank of Canada)
Citibank
Montefiore Investment
Siparex
Natixis
ODiTY
Qualium Investissement
Sogetrel
Bridgepoint
Five Arrows Direct Lending
CACIB
France > Capital markets: equity capital markets Tier 3
McDermott Will & Emery AARPIPractice head(s):
Bertrand Delafaye; David Revcolevschi
Testimonials
‘Great knowledge of capital increase operation processes and related legal aspects, as well as regulatory expertise. Expertise in the management of transnational aspects.’
‘David Revcoleschi is our main contact and demonstrates not only a great knowledge of legal aspects, but also a very solid knowledge of the challenges of start-ups and biotechnology.’
Key clients
GeNeuro
Aerkomm, Inc.
DBV Technologies
Genkyotex
Faurecia
Invest Securities
Mauna Kea Technologies
Sensorion
KBC Securities
Bryan Garnier
Gilbert Dupont SG
Work highlights
- Advised GeNeuro in relation to capital increase by way of an international private placement, providing French legal opinion on no registration with AMF and valid listing under French law.
- Assisted Sensorion with a 3.7% ownership stake acquisition by Sonova Holding AG (headquartered in Switzerland) by way of subscription to a reserved share capital increase for total gross proceeds of €5m.
- Advised Invest Securities and Aerkomm, Inc. in relation to a public offering of up to €40m in new shares of its common stock.
France > Data privacy and data protection Tier 3
McDermott Will & Emery AARPI's data protection and privacy expertise spans the automotive industry, the life sciences sector, consumer goods, and the public sector. With a strong client base of start-ups with a focus on the AI, big data and health sectors, the firm has worked with members of the Paris Biotech incubator. Romain Perray‘s team has ‘real expertise‘ and a ‘tailor-made approach‘ in finding solutions to complex issues.Practice head(s):
Other key lawyers:
Testimonials
‘Strong expertise in a new field.’
‘Good firm, good GDPR expertise, also provides relational help with the CNIL.’
‘Real expertise, tailor-made approach, knowledge of data protection and health law ability to adapt to customer needs.’
‘I work with Romain Perray and Lorraine Maisnier-Boche. I appreciate their expertise, their availability as well as the pragmatic and tailor-made approach they adopt.’
‘I work with Romain Perray who is very knowledgeable about his subject matter and his sector. In addition, his personal qualities make interactions pleasant.’
‘Romain Perray and his team have assisted us with various aspects of GDPR-related data privacy matters. The firm’s client service has been consistently good.’
‘Romain Perray is very specialised in data privacy matters and is very knowledgeable about recent developments and trends in his areas of expertise’
‘Mai Matsubara is a budding young lawyer with a good specialist knowledge of data privacy law, whose multi-lingual skills and understanding of our business are a particular asset for us.’
Key clients
Nissan Motor Co & Nissan International
PSA (Peugeot)
Renault
Mirakl
Aptar Group
Rexair
Acolad
Big Groupe
iAdvize
Work highlights
- Assisted Renault group with the implementation of its GDPR compliance program.
- Assisting iAdvize with conducting in-depth analysis and DPIA on the use of cookies and tracking devices of full audience and targeting purposes when using chatbots.
- Advising Rexair LLC in conducting a GDPR/CCPA Compliance Program for its US headquarters; conducting transfer impact assessments; drafting accountability and transparency documentation and other internal policies.
France > Dispute resolution: White-collar crime Tier 3
McDermott Will & Emery AARPI ‘s practice handles a wide range of cases, spanning defamation, anti-corruption, fraud, securities and corporate compliance matters. They have also notably assisted one of France’s blue chip companies which is facing corruption and fraud investigations in France and overseas. They are acting in several matters in the political sphere, such as the defence of a former public servant in a headline trial.Testimonials
‘Very specialised team on matters such as compliance, internal investigations, and criminal business law (corruption).’
Key clients
Crédit Immobilier de France (CIF-D)
France > Dispute resolution: Commercial litigation Tier 4
McDermott Will & Emery AARPIPractice head(s):
Nicolas Faguer
Testimonials
‘Good for complex litigation work in France.’
Key clients
Corsica Ferries
Qualium Investissement
Malakoff Humanis
Neocom
Hutchinson
Ausy
Euralis
Colisée
France > Insolvency Tier 4
McDermott Will & Emery AARPI advises debtors, shareholders, commercial partners, state-owned banks and investors. The practice is regularly retained for complex mid-size market cases, but also shows solid ability to handle cross-border issues. The team recently worked on a good volume of restructuring matters spanning various industry sectors, including the retail, industrial manufacturing, aviation, hospitality and automotive. Timothée Gagnepain directs the practice which includes associates Théophile Jomier and Lucille Madariaga.Practice head(s):
Timothée Gagnepain
Other key lawyers:
Théophile Jomier; Lucille Madariaga
Testimonials
‘The team is very aware of market practices (constantly evolving in this Covid-19 period). The fluid professional relationships that the restructuring team maintains with the various market players help to resolve very effectively the restructurings in which it is involved. All the members of the team are involved, responsive and proactive, with a constant concern for the interests of the client, whatever the problems encountered.’
‘Timothée Gagnepain is personally involved in all important aspects of the files and is very available. His presence in particular in the negotiations is invaluable, his interventions particularly relevant and his energy in resolving blocking points highly appreciated. His associate Théophile Jomier is excellent, both in his relations with clients and in his legal approach to cases. Lucille Madariaga is also greatly appreciated for her responsiveness and in-depth knowledge of the cases handled.’
‘Great team and firm.’
‘The team is incredibly knowledgeable in insolvency proceedings. From the early guidance through resolution, we found the team collaborative with other counsellors, with the state, and with the administrator.’
‘Timothée Gagnepain and Théophile Jomier were EXCELLENT legal representatives of our case. They were incredibly responsive. We were always made to feel that our case was of the utmost importance to them, even as the case was wrapping up.’
‘A small and structured team which positioned itself on the biggest files. Indispensable team in the restructuring sector.’
‘Timothée Gagnepain is well known in the business. Also qualified at the NYC bar, Timothée is versatile and a formidable litigator! It is also worth noting the great qualities of Lucille Madariaga who is on the path of becoming a partner.’
Key clients
Bio C Bon
Paper Excellence
LGT Private Debt
Abénex
Bpifrance Investissement
Paule Ka
Agence Française de Développement
Work highlights
- Assisting the court-appointed liquidators of the Bio C Bon group with its acquisition by Carrefour.
- Assisted the Canadian group Paper Excellence with the restructuring of one of its French subsidiaries, Fibre Excellence Tarascon.
- Assisted private equity fund Abénex with difficulties faced by two of its portfolio companies.
France > Mergers and acquisitions Tier 4
McDermott Will & Emery AARPIOther key lawyers:
Jacques Buhart; Bertrand Delafaye; Guillaume Kellner; Nicolas Lafont
Key clients
Cryoport Systems
Pierre Fabre
Juratoys
Récupération Valorisation Aluminium (‘RVA’)
Yposkesi
Gallimard/ Madrigall
Action Logement
Avison Young
Bridgepoint
Deluxe Media
Playrion
Tiller Systems
Ovrsea
Maïsadour and Groupe Aqualande
ESI Gorup
Work highlights
- Advised Pierre Fabre, a French pharmaceutical and dermo cosmetics group, on the sale of the brand Galénic, expert in face care, to Yatsen, a Chinese cosmetics company.
- Advised Yposkesi, 1st French pharmaceutical manufacturer dedicated to the production of gene and cell therapy drugs for rare diseases, on its acquisition by SK Holding, a South-Korean investment conglomerate.
- Represented the shareholders of Récupération Valorisation Aluminium (‘RVA’), a France-based specialist in salt slag recycling on the sale of RVA to US-based Real Alloy, a leading recycler of aluminum and light metals.
France > Tax Tier 4
Led by Antoine Vergnat, McDermott Will & Emery AARPI's tax team provides assistance to the firm’s corporate and private equity practice. The team assists investment funds and management teams with LBO transactions, often in the mid-cap segment of the market, as well as with venture investments, notably in the IT and biotechnology sectors. The tax team has strong cross-border capabilities. Its in-depth knowledge of the healthcare sector is another asset. The practice's stand-alone caseload includes assisting companies, private clients and funds with tax restructuring, trust, audit and litigation work. Counsel Romain Desmonts is also noted.Practice head(s):
Antoine Vergnat
Other key lawyers:
Romain Desmonts
Testimonials
‘Responsive and precise. They take a stand.‘
Key clients
Tiller Systems
Ardian Growth and BNP Paribas Développement
Labelium
CAPZA
Qualium Investissement
L’Oréal
Pierre Fabre
Eurazeo PME
R.V.A.
Management team of Sogetrel
Cryoport
CAFPI
Vetoquinol
Naxicap Partners
Florac
Campari
Work highlights
- Advised CAPZA in the context of its acquisition of a minority stake in the Magellan Partners Group.
- Advised Tiller Systems on its sale to SumUp.
- Advised the founders of the CAFPI, a real estate brokerage network, in connection with the opening of its capital to the investment fund BlackFin Capital Partners.
McDermott Will & Emery AARPI > Firm Profile
The firm: McDermott Will & Emery partners with leaders around the world to fuel missions, knock down barriers and shape markets. Our team works seamlessly across practices, industries and more than 20 locations to deliver highly effective—and often unexpected—solutions that propel success. More than 1,400+ lawyers strong, we bring our personal passion and legal prowess to bear in every matter for our clients and the people they serve.
Areas of practice: The Paris office plays an important role for the firm internationally, helping French businesses strengthen their positions domestically, throughout Europe, the Middle East, Africa and around the world. The Paris lawyers also advise foreign and multinational investors, companies and financial institutions seeking to enter the marketplace in France. As part of an international network of collaborative lawyers, McDermott’s professionals share ideas on trends and key developments in law and on the numerous industries in which its clients operate, resulting in seamless, multidisciplinary service to its clients.
The team advises clients across numerous areas of law, including corporate, mergers and acquisitions, private equity, securities and listing transactions, corporate restructuring and bankruptcy law. The team represents clients in a wide range of industry sectors including, but not restricted to, energy (with an emphasis on projects in Africa), tour operating and telecommunications. The Paris energy practice is a dedicated team of lawyers with a strong sector focus on energy, oil and gas, and related areas such as natural resources and commodities. The team advises energy producers and traders in the US, Europe, Africa, the Middle East and Asia. The Paris lawyers also counsel clients on matters involving general commercial law, with a focus on the pharmaceutical, life sciences, medical device, biotech and healthcare industries. The dispute resolution lawyers advise on international arbitration and public law, and counsel on behalf of companies in civil, criminal and administrative matters. The employment practice advises businesses on issues such as termination, discrimination, harassment, restrictive covenant breaches, strikes and other collective conflicts, and counsels clients on the labour and employment aspects of domestic and transnational commercial matters. Furthermore, the Paris lawyers advise on the full range of EU competition issues, litigation and international tax issues. With a diversified business practice, the firm represents a wide range of commercial, industrial and financial enterprises, including publicly traded and privately held companies.
The Paris team and individual lawyers are recognised for the quality, consistency and creativity of their legal counsel. As part of a global, full-service law firm, the lawyers of the Paris office are prepared to help clients wherever their business interests take them.
Main Contacts
Department | Name | Telephone | |
---|---|---|---|
Corporate | Jacques Buhart | ||
Corporate | Jonathan Wohl | ||
Corporate | Guillaume Kellner | ||
Corporate | Bertrand Delafaye | ||
Corporate | Nicolas Lafont | ||
Mergers and acquisitions | Guillaume Kellner | ||
Mergers and acquisitions | Bertrand Delafaye | ||
Antitrust and competition | Jacques Buhart | ||
Antitrust/Competition | Frédéric Pradelles | ||
Tax | Antoine Vergnat | ||
Employment | Jilali Maazouz | ||
EU competition | Jacques Buhart | ||
Litigation | Nicolas Faguer | ||
Litigation, Public law | Laurent Ayache | ||
Public law, regulatory and government strategies | Sabine Naugès | ||
Private equity | Henri Pieyre de Mandiargues | ||
Health, life sciences | Emmanuelle Trombe | ||
Health, life sciences | Anthony Paronneau | ||
Banking and finance | Pierre-Arnoux Mayoly | ||
Intellectual property | Laura Morelli | ||
Privacy & Cybersecurity | Romain Perray | ||
Business Restructuring | Timothée Gagnepain | ||
Capital Markets | David Revcolevschi | ||
Capital Markets | Bertrand Delafaye |
Lawyer Profiles
Photo | Name | Position | Profile |
---|---|---|---|
![]() | Mr Grégoire Andrieux | Grégoire Andrieux is a partner, he focuses on domestic and international mergers and… | View Profile |
![]() | Mr Laurent Ayache | Laurent Ayache is a partner and co-head of the Regulatory Practice in… | View Profile |
![]() | Mr Jacques Buhart | Jacques Buhart is a partner, he focuses his practice on cross-border mergers… | View Profile |
![]() | Mr Romain Desmonts | Romain Desmonts focuses his practice on tax advice to French and multinational… | View Profile |
![]() | Ms Shirin Deyhim | Associate Shirin Deyhim focuses her practice on structured finance transactions; in particular… | View Profile |
![]() | Mr Timothée Gagnepain | Partner Timothée Gagnepain focuses his practice on complex restructurings and insolvencies, both… | View Profile |
![]() | Mr Théophile Jomier | Théophile Jomier focuses his practice on complex corporate transactions, in particular, on… | View Profile |
![]() | Mr Guillaume Kellner | Guillaume Kellner focuses his practice on mergers and acquisitions, private equity, and… | View Profile |
![]() | Mr Jilali Maazouz | Jilali Maazouz is a partner, focusing his practice on labor and employment,… | View Profile |
![]() | Ms Lucille Madariaga | Lucille Madariaga focuses her practice on complex commercial transactions, insolvency proceedings and… | View Profile |
![]() | Mr Pierre-Arnoux Mayoly | Partner Pierre-Arnoux Mayoly focuses on structured finance matters, in particular in the… | View Profile |
![]() | Ms Sabine Naugès | Sabine Naugès is a partner, her practice focuses on all aspects of… | View Profile |
![]() | Mr Anthony Paronneau | Anthony Paronneau is a partner, he advises clients on all aspects of corporate and… | View Profile |
![]() | Mr Romain Perray | Romain has extensive experience in data privacy and data protection law, and… | View Profile |
![]() | Mr Henri Pieyre de Mandiargues | Henri Pieyre de Mandiargues is a partner, he focuses on private equity transactions,… | View Profile |
![]() | Ms Emmanuelle Trombe | Partner Emmanuelle Trombe represents pharmaceutical, medical device and bio-pharmaceutical companies globally in… | View Profile |
![]() | Mr Antoine Vergnat | Partner Antoine Vergnat focuses his practice on advice to French and non-French… | View Profile |
Staff Figures
Number of lawyers : 1200 at this office : 71Languages
All main business languagesMemberships
Strategic alliance with MWE China Law Offices ShanghaiOther
Other offices : Atlanta Other offices : Boston Other offices : Brussels Other offices : Chicago Other offices : Dallas Other offices : Düsseldorf/Cologne Other offices : Frankfurt Other offices : Houston Other offices : London Other offices : Los Angeles Other offices : Miami Other offices : Milan Other offices : Munich Other offices : New York Other offices : Orange County Other offices : San Francisco Other offices : Silicon Valley Other offices : Washington DC Other offices : WilmingtonComparative Guides
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