Firm Profile > Osterling Abogados > Lima, Peru

Osterling Abogados

Insurance Tier 1

Osterling Abogados excels in the field, and is the preferred advisor to A-list domestic and foreign insurers and reinsurers, as well as international insurance law firms requiring Peruvian counsel. Its comprehensive offering includes advice on incorporation, underwriting, distribution, claims, regulatory affairs, litigation, arbitration, consumer matters and M&A, and is overseen by pre-eminent insurance lawyer Enrique Ferrando. He is supported by Gabriel Loli, who is making a name for himself in arbitrations in the field of insurance and reinsurance, and construction and engineering. The firm is lead advisor to domestic insurance giant Rimac Seguros y Reaseguros, which it advises on multiple high-value or high-stakes claims including the long-running $30m arbitration against electricity utility Luz del Sur. The firm is also the preferred adviser to the Peruvian Association of Insurance Companies (APESEG).

Practice head(s):


Exceptional handling in insurance issues, reliability and permanent contact are their best features.’

The firm has specialised knowledge in insurance law, the insurance market, and arbitration. Recommend Enrique Ferrando for insurance, reinsurance and arbitration; and Gabriel Loli for insurance and arbitration.’

Key clients

Rimac Seguros y Reaseguros

Asociación Peruana de Empresas de Seguros – APESEG

Arthur J Gallagher (Peru)

Dual Corporate Risks

RGA Reinsurance Company


Swissport (Peru)

Mapfre Perú Compañía de Seguros y Reaseguros

Hogan Lovells International

Ohio National Seguros de Vida

Clyde & Co

JLT Perú

Dispute resolution Tier 3

Osterling Abogados boasts a high success ratio dealing with complex disputes concerning civil, commercial and constitutional matters, before both the courts and arbitration forums. As expected of a tier-one insurance firm, its extensive caseload includes a large share of insurance-related conflicts, led by leading insurance litigator and arbitrator Enrique Ferrando, who co-heads the practice and has 'great knowledge of the market.' The firm also attracts a broad range of non-insurance litigation and arbitration on behalf of mining, energy, construction and real estate companies, among other sectors, as well as individuals. 'Outstanding’ litigator Mauricio Martínez is co-head of the team, while Gabriel Loli focuses on arbitration. Partner Kodiak Semsch departed in April 2020 to grow the litigation practice at rival insurance firm Kennedys.


The firm has broad expertise, thorough analysis of the legal issues and practical consequences  and strong links in the local market.’

Enrique Ferrando is very experienced with great knowledge of the market. Gabriel Loli  has strong understanding of the legal issues and is responsive.’

I see a good interaction between the different areas of specialties and good commitment of the lawyers. They react quickly.’

They get very involved and are ready to answer any questions or queries. It is not a bureaucratic organisation. Mauricio Martínez is outstanding.’

Key clients

Rimac Seguros y Reaseguros

Constructora Industrial y Comercial Vulcano

Minera Aurífera Retamas

Inversiones Castelo Branco

Inmobiliaria Santa Felicia

Compañia Minera Kolpa

Aceros Chilca

Clínica Internacional

Los Portales

La Positiva Seguros y Reaseguros

Asociación Civil Educativa EDU-MAX

CMC Constructora en Liquidación

AXA Insurance

Mercuria Energy Group

Intellectual property Tier 3

Osterling Abogados acts for a broad array of domestic and international clients but is particularly experienced in the pharmaceutical, beauty and fashion industries, as well as hospitality, for example hotels and restaurants. Clients highlight the efficient and effective service provided by practice head Arturo Tello and his three-strong specialist team. It includes fellow partner Ximena Souza-Ferreira, who combines her practice with competition work, including a substantial volume of advertising matters. The firm has had a number of cases in the appeal courts during the past year defending clients' trade marks.

Practice head(s):


They are a team with immediate response capacity, excellent legal concepts and a great willingness to serve their clients. I have never before worked in Peru with such an efficient office.’

Best features are the response times, quality in concepts, willingness and good customer service. Arturo Tello is recommended.’

They are quick and give effective responses.’

They offer us confidence in the matters that we entrust to them. They handle issues well depending on the matter they are charged with, for example, trade marks and some patents.’

I think it’s the real deal. We have worked with them for years and have very good communication with Ximena Souza-Ferreira and Arturo Tello.’

Key clients




Rimac Seguros y Reaseguros

Frida Kahlo (heirs)

Maxim Holdings

Harley-Davidson Motor Company

Honeywell International



Labour and employment Tier 4

Osterling Abogados advises on labour, social security, health and safety and immigration issues with a particularly strong following among the insurance, pharmaceutical and mining companies. The team boasts a high success rate in litigation and arbitration, and is currently acting for Rimac Seguros in this regard. The team of four specialists include partners Ary Alcántara Valdivia and Joyce Cieza Mora.


Recommend for their up-to-date knowledge, accurate strategy and experience in litigation, especially Ary Alcántara Valdivia.’

The team of Osterling Abogados is top quality, they know the regulations in detail and advise their clients adequately and in a timely manner. They are available and successful as company representatives in the face of negotiation.’

Ary Alcántara Valdivia is a benchmark in the labour market. He is knowledgeable about regulations, has legislated high-impact collective bargaining and has an excellent relationship with his clients. Joyce Cieza Mora is also very talented, responds quickly and is thoroughly familiar with regulations specific to her client’s sector.’

Key clients

Rimac Seguros

Gold Fields La Cima


Sociedad Minera Corona

Sanofi Aventis Del Perú

Alcon Pharmaceutical

Cignium Technologies

Pesquera Hayduk

Maxi Mobility Perú – Cabify

Sociedad Minera Austria Duvaz


Corporación Financiera De Desarrollo – COFIDE

Grupo Repsol del Perú


Comercializadora S & E Perú

Established in 1980, Osterling Abogados is a leading full-service Peruvian law firm, widely acknowledged in both domestic and cross-border markets. For nearly four decades, we have been delivering legal services in line with a philosophy that combines a strong focus on our clients’ goals, proven international expertise, and an in-depth understanding of the complexities of the local law, which allows us to offer optimal, timely and effective advice and innovative solutions.

Much more than just legal advisors, we aim to become a strategic partner for each of our clients and to be alongside them across all stages of their business cycle, whether it is in helping prevent potential risks to affect their operations, implementing new business strategies, or successfully tackling either daily or unforeseen legal challenges. Accordingly, the firm covers the main practice areas of law that relates to business operation, such as banking, construction and real estate, corporate and M&A, data protection, dispute resolution, IP, insurance, labour, life sciences, public law, taxation, among others.

Despite the wide range of practices integrated to its scope of services, Osterling Abogados maintains the personalized approach in clients’ assistance, and for which it is so well known since its beginnings. The solid experience of our senior practitioners is balanced in practice by an energetic and committed young team, which ensures sound analysis, strategic approach and creative solutions in addressing sophisticated matters within a dynamic and rapidly changing environment.

The firm advises local and international companies from a broad range of industries including banking, beauty and healthcare, fishery, food, (re)insurance, luxury brands, mining, real estate, retail and technology, among others. Representative clients include Sanofi, Alcon, Mapfre, Gallagher, Grupo Bimbo, Hayduk, Rímac Seguros y Reaseguros, Cabify, Grupo Breca, Mercuria, Nyrstar, Gol TV, Procesadora Sudamericana, Los Portales, among others.

Main areas of practice
Banking, corporate finance and capital markets: The firm has solid expertise in matters relating to finance and capital market instructions. The team is widely experienced advising clients for contractual negotiation, asset securitisation, syndicated loans, bonds, secured notes, project finance, and debt roll-over private agreements, among other instructions.

Corporate/mergers and acquisition: Osterling Abogados has extensive experience advising local and international clients in a wide range of instructions whether transactional or consultancy. The practice group stands out as per its notable capabilities handling mergers, acquisitions, spin-off, joint-ventures, divestments and corporate reorganizations. Also, well versed on consultancy regarding complex contractual matters, which includes, drafting, reviewing and interpretation. In addition, provides support in an array of non-transactional instructions related to the course of business.

Construction: The firm is regarded among the leading construction teams within the industry. Our practice group advises public and private owners and contractors in addressing all the legal challenges that may arise from the design, development, financing, performance and management of major construction contracts. When disputes occur, our practitioners are particularly skilled for the settlement of claims, whether by ADR or arbitration.

Dispute resolution: With our clients’ best interests in mind, our practice group will work for securing the most favourable outcomes at the earliest possible stage of the dispute that they may be dealing with. We are acknowledged as solid litigators, with a high success ratio at all litigation and arbitration scenarios, but also as thoughtful strategists and skilled negotiators. As a part of the bench, the firm also counts on with top-tier arbitrators and legal experts who are appointed in both domestic and international arbitration procedures on a regular basis.

Intellectual property: Well-established practice with a solid reputation and expertise providing high-quality advice on a wide range of IP matters, including patent and trademark prosecution, enforcement, portfolio management, anti-counterfeiting, and litigation, whether administrative or judicial. The crew stands out as per its in-depth knowledge of the regulations applicable, accurate opinions and tailored service. Strongly focused in pharmaceutical, beauty and fashion, the client roster includes market-leading names such as GSK, Sanofi, L’oreal, Harley Davidson, Rimac Seguros, Prosegur –just to mention a few–, but also includes a wide range of domestic and multinational clients from several other industries.

Insurance and reinsurance: Our practice group is recognised as the undisputed market leader, by both clients and peers, for far longer. It comprises all aspects of the (re)insurance practice: incorporation, underwriting, distribution, claims, regulatory affairs, dispute resolution, among others. Our integrated view, responsiveness, accurate advice, technical proficiency and sound knowledge of the law and regulations are praised by clients, among of which we retain major players, such as Rimac Seguros, A.J. Gallagher, Mapfre Global, La Positiva, Apeseg, Allianz, Qbe, Zurich, Starstone, among others.

Life sciences: The firm provides advice on regulatory matters for the pharmaceutical, veterinary, cosmetic and food sectors. Our team has broad experience defending claims and proceedings with Peruvian Environmental Health and Food Safety Agency. We also advise leading pharmaceutical laboratories for performing clinical trials within the framework of current legislation.

Labour and employment: We provide comprehensive advice for the protection of our client’s interests when it comes to the legal aspects relating to human resources management. The practice group covers all fields of labour and employment law, which include preventive advice, labour policy making, collective bargaining processes, safety and occupational health matters, immigration procedures and permits, and dispute resolution, either through ADR or litigation.

Public law: A highly-integrated team that holds a solid reputation as reliable advisors on public bidding and procurement, complex regulatory issues, and administrative litigation. The practice brings together the experience of senior-level practitioners that excel in public law matters, but also in key specialities, such as (re)insurance, dispute resolution, extractive industries, construction, among others. This added value allows them to provide very specific advice on administrative and regulatory matters, but without losing sight of the particularities of the industry in which the clients develop their businesses.

Real estate: The firm has extensive experience handling real estate mandates and disputes drawn mostly from the mining sector. Said expertise has been capitalized by gathering a very specialised team for providing suitable solutions for development, construction and acquisition matters. Depending on the complexities of each instruction, other specialists of the firm are brought on board, which assure the most comprehensive advice for every case.

Tax: A permanent search for value-added solutions that better fit our clients’ goals is what best describes the core of the practice group.  Our practitioners stand out as per their expertise in a full spectrum of taxation matters that include tax planning, audits, customs and instructions relating to daily tax management. They also work closely with the corporate team in structuring complex transactions from a tax perspective. The firm also holds a 92% success rate in tax litigation for the last seven years.

Department Name Email Telephone
Insurance and Reinsurance Enrique Ferrando +511.6118282
Insurance and Reinsurance Gabriel Loli +511.6118282
Construction Miguel Delgado +511.6118282
Labour & Employment Ary Alcantara +511.6118282
Labour & Employment Joyce Cieza +511.6118282
Dispute Resolution Mauricio Martínez +511.6118282
Intellectual Property Arturo Tello +511.6118282
Intellectual Property Ximena Souza Ferreira +511.6118282
Tax Jose del Castillo +511.6118282
Tax Gonzalo Echevarria +511.6118282
Real Estate Angello Rivera +511.6118282
Banking Enrique Ferrando +511.6118282
Corporate Enrique Ferrando +511.611.8282
Commercial Arbitration Enrique Ferrando +511.611.8282
Commercial Arbitration Gabriel Loli +5116118282
Public Law Enrique Ferrando +511.6118282
Public Law Gabriel Loli +511.6118282
Corporate Finance Enrique Ferrando +511.6118282
Capital Markets Enrique Ferrando +511.6118282
Mergers & Acquisition Enrique Ferrando +511.6118282
Life Sciences Ximena Souza-Ferreira +511.6118282
Photo Name Position Profile
 ARY ALCÁNTARA  photo ARY ALCÁNTARA Ary Alcántara is head partner of Osterling Abogados. Leads the Labour practice…
 JOYCE CIEZA  photo JOYCE CIEZA Joyce Cieza partner of Osterling Abogados. Member the Labour practice area.
 JOSÉ DEL CASTILLO  photo JOSÉ DEL CASTILLO Partner. Head of the Tax practice group
 MIGUEL DELGADO  photo MIGUEL DELGADO Senior associate – head of the Construction Law practice group
 ENRIQUE FERRANDO  photo ENRIQUE FERRANDO Managing partner. He heads the Insurance & Reinsurance, Dispute Resolution, and Corporate…
 GABRIEL LOLI  photo GABRIEL LOLI Senior associate. Co-head of the Insurance & Reinsurance practice group
 Mauricio Martínez photo Mauricio Martínez Mauricio Martinez partner of Osterling Abogados. Leads the Litigation practice area.
 XIMENA SOUZA-FERREIRA  photo XIMENA SOUZA-FERREIRA Head of the Life Sciences practice group and co-head of  the Intellectual…
 ARTURO TELLO  photo ARTURO TELLO Senior Partner and head of the IP and Competition practice group.
Partners : 8
Associates and other fee-earners : 19
Insuralex (Global Insurance Lawyers Group)