Stéphane Leriche

Arash Attar-Rezvani focuses on complex cross-border public and private M&A transactions, strategic alliances and business partnerships, international capital markets transactions and privatizations. His professional experience also includes corporate governance and shareholder activism. Mr. Attar-Rezvani was selected as one of 10 Rising Stars of the Paris bar by Décideurs Juridique for 2018, was named in The Best Lawyers in France 2021 and has repeatedly been listed as a Notable Pr...

Before joining UGGC Avocats, Alison Leroy worked for 7 years at Carakters, then at Franklin from 2020, and recently at Bersay, where she opened the “Life Sciences, Biotech and Pharma R&D” department. Her experience covers regulatory affairs, site and production unit management, and the negotiation and management of R&D and business development contracts (collaborative research contracts, co-development contracts, clinical trial contracts, French and European consortia, etc...

David Roche has developed a practice dedicated to players in the new technologies, banking and payment services sectors. David assists his clients with the structuring and implementation of complex technology projects, including contract drafting and negotiation, personal data and artificial intelligence compliance, as well as pre-litigation and litigation management. He has also developed a sector-specific practice in FinTechs, serving all regulated and unregulated players in the chain. He a...

Magali Masson is a lawyer recognized by Best Lawyers in the practice areas of Corporate Law and Mergers and Acquisitions Law. Magali practices law in Paris, France Best Lawyers has recognized Magali Masson since 2023. 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 Magali Masson is held by other lawyers.

Julien Maire du Poset is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation and International Arbitration. Julien, who practices law in Paris, France, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Julien is held by other top lawyers in the same geographic and legal practice area. Julien also acts in cross-border commercial litigation, enforcement, and international ...

Nicolas Mancret assists his clients in the development and implementation of their social policy. Over the course of his career, he has developed expertise in both advisory and litigation matters relating to corporate restructuring, individual and collective labor relations and the implementation of the labor policy of major French and foreign companies operating in France.

Herschel Guez is a lawyer recognized by Best Lawyers in the practice area of Mergers and Acquisitions Law. Herschel practices law in Paris, France Best Lawyers has recognized Herschel Guez 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 Herschel Guez is held by other lawyers.

Michel Ponsard is one of the partners in charge of the UGGC Avocats Competition Law Departement, present since the law firm's inception after an experience in Brussels. His practice mainly focuses on competition law and distribution, but also on the law of commercial contracts and commercial practices, as well as to the right of promotion and publicity. More precisely he works for a French and international clientele in fields as diverse as the automotive sector, the pharmaceutical sector, pe...

Guillaume Kellner is a lawyer recognized by Best Lawyers in the practice areas of Corporate Law, Mergers and Acquisitions Law and Private Equity Law. Guillaume practices law in Paris, France Best Lawyers has recognized Guillaume Kellner since 2014. 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 Kellner is held by other lawyers.

Paul Talbourdet is a lawyer recognized by Best Lawyers in the practice areas of Banking and Finance Law, Insolvency and Reorganization Law, Investment, Litigation and Real Estate Law. Paul practices law in Paris, France Best Lawyers has recognized Paul Talbourdet since 2011. 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 Paul Talbourdet is held by other la...