Geoffroy P. Lyonnet

Benjamin de Sevin has been elected as a partner in 2020. There are three main aspects to his practice: First of all, public contract law (public procurement, concessions, occupation of the public domain, etc.). Benjamin assists French and international public entities and private operators in the conclusion and performance of their contracts, both as counsel and in litigation, with expertise in infrastructure concessions and PPPs (public-private partnerships). He is often involved in dealing ...

Known for his expertise in international taxation and transfer pricing, Cyril Maucour advises and represents a French and international client base comprising entrepreneurs, growing companies, startups, SMEs and large groups operating in various sectors such as industry, technology, fashion, pharmaceuticals, and renewable energy. He provides guidance and support to French companies in their international expansion, offering specific expertise on foreign tax regimes. He assists foreign groups ...

Christian Saint-Palais is a Paris-based attorney with Le Borgne Saint-Palais Associés whose practice focuses on criminal defense , white-collar matters, and complex litigation. He holds a post-graduate diploma (DEA) in international public law and was admitted to the Paris Bar in 1992. In 1995, he joined the criminal defense practice founded by Jean-Yves Le Borgne. A former Secrétaire de la Conférence, Mr. Saint-Palais has represented clients in significant criminal proce...

Peter Sherwin is a partner in the Litigation Department, head of the International Arbitration Group, head of the Commercial Real Estate Litigation Group, and a member of the Latin America Practice. Peter counsels clients in complex cross-border commercial disputes, often involving a joint venture, a licensing or distribution relationship, or an acquisition, most of which are resolved in international arbitration and the rest in federal and state courts in the United States. He has significan...

Jean-François Puget is a lawyer recognized by Best Lawyers in the practice areas of Insolvency and Reorganization Law, Litigation and Trade Law. Jean-François practices law in Paris, France Best Lawyers has recognized Jean-François Puget since 2022. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Jean-François Puget is held by other lawyers.

Ana Vermal is a partner in the Litigation Department and co-head of the firm’s International Arbitration Group. Ana Vermal is a seasoned quadrilingual lawyer with extensive experience in both common law and civil law. With over 20 years of experience, she represents corporations from around the world on complex arbitrations arising from cross-border business transactions including acquisitions, joint ventures, distribution and licensing agreements. Ana handles arbitral proceedings under...

Cécile Théard-Jallu has developed in-depth expertise as an attorney in private practice representing multinational corporations, including major US and European firms and organizations in the R&D and healthcare sector (public or private research institutions, academics, pharmaceutical laboratories, biotechnology companies, medical equipment manufacturers, service providers, software or connected health platforms publichers, investors, competitiveness clusters, tech transfer ...

Guillaume De Saint Sernin is a lawyer recognized by Best Lawyers in the practice area of Employee Benefits Law. Guillaume practices law in Paris, France Best Lawyers has recognized Guillaume De Saint Sernin since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Guillaume De Saint Sernin is held by other lawyers.

Emmanuelle Trombe is a lawyer recognized by Best Lawyers in the practice areas of Biotechnology and Life Sciences Practice, Corporate Law and Health Care Law. Emmanuelle practices law in Paris, France Best Lawyers has recognized Emmanuelle Trombe since 2012. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Emmanuelle Trombe is held by other lawyers.

Quentin de Margerie’s practice focuses on white collar crime and complex domestic and cross-border litigation, particularly with regard to corporate, securities and commercial law, M&A transactions, joint-ventures, directors’ liability, compliance and enforcement matters. He represents clients in all stages of their disputes, and has close to 10 years of experience as a trial lawyer before French civil, commercial and criminal courts as well as regulatory authorities. Quentin ...