
Marval O’Farrell Mairal’s litigation and arbitration team offers specialised dispute resolution services and expert teams. The firm is at the top of the market for high-value, complex work and is often called upon to represent everyone from multinational technology companies and banks to large commodities and energy companies before the Argentine Supreme Court and institutional arbitration tribunals (ICSID, ICC, and UNCITRAL). Practice head Ricardo Ostrower has a wealth of experience representing clients in high-stakes cases before the ICC, ICSID, and the Buenos Aires Stock Exchange’s Arbitral Tribunal, and is also regarded as one of the most capable Argentine lawyers in commercial litigation. Julio César Rivera is an expert in international and domestic arbitration and complex commercial litigation and insolvency cases, and Julio César Rivera (h) specialises in complex commercial litigation and constitutional law. Santiago Soria has in-depth experience dealing with cases in the energy and natural resources sectors, acting for clients in high-value arbitrations and corporate disputes. Of counsel Martín Campbell is an experienced practitioner, adding depth in dispute resolution matters related to insolvency and restructuring. Rodrigo García is knowledgeable in class actions and complex environmental litigation, and in niche areas, such as matrimonial, family law, and inheritance disputes. Facundo Viel Temperley also contributes experience in procedural law and civil, consumer, and product liability litigation, and is active in representing high-profile clients. Fernando Alemany, a specialist in the oil and gas, infrastructure, pharmaceuticals, and technology sectors, and Martín Vainstein, who is skilled in cases in the energy, infrastructure, and other regulated industries, are part of a cohort of younger partners that further enhance the firm’s litigation and arbitration practice.
Legal 500 Editorial commentary
Accolades
Client satisfaction
Testimonials
Collated independently by Legal 500 research team.
- 'The team led by Santiago Soria is excellent.'
- 'Legal knowledge and also commercial knowledge, which, combined, make the difference to the team.'
- 'Marval's team is highly sophisticated, understands the complexity of cross-border disputes, and adapts to the client's needs. The experience of serving top-tier clients has forged a solid team committed to excellence in legal services.'
- 'Rodrigo García is an excellent lawyer, serious and intelligent. A seasoned strategist with an excellent track record of successful cases. He is also a skilled negotiator, which allows him to resolve cases before initiating lengthy legal proceedings.'
- 'Marval O'Farrell Mairal offers a strategic partnership characterised by their sophisticated understanding of Argentine law, exceptional responsiveness, practical problem-solving, and a comprehensive suite of capabilities across diverse practice areas. They possess a remarkable ability to swiftly identify the crucial legal issues at hand, and to propose effective and practical solutions tailored to the specific challenges of the case. Their ability to navigate complex disputes is particularly noteworthy.'
- 'A team that is highly committed to providing excellent service, with solid knowledge and up-to-date with trends.'
Key clients
- Repsol
- FlyBondi
- Barclays Bank
- Credit Suisse
- Cargill
- Monsanto
- Pan American Energy
- Claro
- Kimberly-Clark
- Direct TV
- Bioceres
- INC (Carrefour Group)
Work highlights
Representing Autopistas del Sol and Grupo Concesionario del Oeste both in the litigation before the federal courts and in the ICC arbitration proceedings resulting from the Argentine government’s actions aimed at nullification of renegotiation agreements.
Advising Abertis Infraestructuras on its $1bn ICSID claim filed against Argentina, as a result of the sovereign measures that have affected its investments in Autopistas del Sol and Grupo Concesionario del Oeste.
Represented Raízen Argentina SAU in the legal action to pursue the annulment of Resolution No. 25/2006 of the former Secretariat of Commerce, which intended to force oil companies to supply minimum volumes of fuels under the Supply Law invoking powers that were not in force.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Ricardo A. Ostrower
Other key lawyers
Julio César Rivera; Julio César Rivera (h).; Santiago Soria; Martín Campbell; Rodrigo García; Facundo Viel Temperley; Fernando M. Alemany; Martín Vainstein





