Nicolas Callies

Chair of Winston & Strawn's Paris Corporate Practice, Jérôme Herbet has advised French and foreign private and public corporations as well as private equity funds in connection with various domestic and cross-border transactions, including mergers and acquisitions and stock exchange transactions. He also regularly advises companies for the purposes of corporate finance transactions, including private placements and complex financing structures. Over time, he has participated ...

Emeline Peltier is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Emeline, who practices law in Paris, France, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Emeline is held by other top lawyers in the same geographic and legal practice area.

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...

Zhen Huang is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation. Zhen, who practices law in Paris, France, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Zhen is held by other top lawyers in the same geographic and legal practice area.

Xavier Marchand is a top attorney recognized by Best Lawyers in the practice area(s) of Public Law. Xavier, who practices law in Paris, France, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Xavier is held by other top lawyers in the same geographic and legal practice area.

Fabrice Girard is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Reorganization Law. Fabrice, who practices law in Paris, France, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Fabrice is held by other top lawyers in the same geographic and legal practice area.

Martine Samuelian specializes in banking, investment and payment services as well as in insurance regulation. She also advises clients on banking and financial litigation (civil and criminal courts or independent administrative authorities such as the AMF and ACPR Sanctions Commissions, the ECB). This regulatory specialist leads a strong team dedicated to compliance, anti-money laundering and counter-terrorism financing, prudential requirements, governance and blockchain issues, and has been ...

Emmanuel Marsigny is a top attorney recognized by Best Lawyers in the practice area(s) of Criminal Defense. Emmanuel, who practices law in Paris, France, has been recognized since 2017. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Emmanuel is held by other top lawyers in the same geographic and legal practice area.

Alexandre Eberhardt Le Prévost is a top attorney recognized by Best Lawyers in the practice area(s) of Competition / Antitrust Law. Alexandre, who practices law in Paris, France, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexandre is held by other top lawyers in the same geographic and legal practice area.

Stéphanie Guedes da Costa focuses particularly on relations with employee representative bodies, professional elections, collective bargaining, as well as restructuring operations (including employee transfers, voluntary departure plans, and employment protection plans). She advises both French and international companies, providing support in both advisory and litigation matters (covering individual and collective issues). For many years, she has also assisted entities with mixed-stat...