Denise Lebeau-Marianna

Clémence Lemétais d'Ormesson is a top attorney recognized by Best Lawyers in the practice area(s) of Arbitration and Mediation and Litigation. Clémence, 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 Clémence is held by other top lawyers in the same geographic and legal practice area.

Grégoire Balland is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law and Real Estate Law. Grégoire, 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 Grégoire is held by other top lawyers in the same geographic and legal practice area.

Thomas Dupont-Sentilles is a top attorney recognized by Best Lawyers in the practice area(s) of Venture Capital Law. Thomas, 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 Thomas is held by other top lawyers in the same geographic and legal practice area.

Luc Castagnet is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Health Care Law and Real Estate Law. Luc, who practices law in Paris, France, has been recognized since 2010. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Luc 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...

Mr. Autret regularly represents clients in all aspects of their disputes, particularly with regard to M&A-related disputes, commercial and corporate litigations, stock market and securities disputes, bankruptcy litigation, corporate restructurings, directors’ liability, state aids and white collar crime. He has been heavily involved in numerous “bet-the-company” litigations in which the disputes have had high levels of commercial and financial risk and prominent media ex...

Caroline André-Hesse advises her clients in all aspects of French and cross-border employment and social security law. True partner for her clients, she assists them, in both advising and litigation, in their daily routine issues but also within the frame of their exceptional operations whether they concern individual relationship (dismissal, international and national mobility, management packages, …) or their collective disputes and relationship (reorganisation, employment due...

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 ...

Antoine Vergnat is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Antoine, who practices law in paris, France, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Antoine is held by other top lawyers in the same geographic and legal practice area.

After he graduated from St Jean de Passy in Paris, Kiril Bougartchev studied at Université Paris II Panthéon-Assas. He has post-graduate diplomas in Business Law (Magistère) and in Tax Law (DESS). He first worked as an intern at l’Oreal in Paris and carried out several internships at renowned US law firms (Coudert Brothers, etc.) and securities brokers (Morgan, Olmstead, Kennedy & Gardner), before he started his career in 1988 as an auditor at Arthur Andersen. A...