Olivia Guéguen

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 ...

Corinne Khayat has been a partner of UGGC Avocats since 2000, where she co-heads the Competition Law department. She regularly represents her clients before the courts and competition authorities and advises in all areas of French and EU competition law. She has particular experience in notifying mergers and joint ventures to the French Competition Authority. She handles proceeding before competition authorities. Corinne Khayat assists French and foreign clients, mostly large and medium size ...

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.

Marie Piot is a lawyer recognized by Best Lawyers in the practice area of Insurance Law. Marie practices law in Paris, France Best Lawyers has recognized Marie Piot since 2020. 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 Marie Piot is held by other lawyers.

Christophe Pichon is a lawyer recognized by Best Lawyers in the practice areas of Administrative Law and Public Law. Christophe practices law in Paris, France Best Lawyers has recognized Christophe Pichon 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 Christophe Pichon is held by other lawyers.

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...

Emmanuelle Cardon - de la Hosseraye is a lawyer recognized by Best Lawyers in the practice area of Insurance Law. Emmanuelle practices law in Paris, France Best Lawyers has recognized Emmanuelle Cardon - de la Hosseraye 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 Emmanuelle Cardon - de la Hosseraye is held by other lawyers.

After nearly twenty years’ experience as a tax lawyer with the Paris offices of Landwell (1995-2005) and August & Debouzy as of counsel, Alfred LORTAT-JACOB joined the Paris Office of Cornet Vincent Segurel as a tax partner in October 2010.Alfred LORTAT-JACOB holds a Master's degree in public finance and taxation from the University of Panthéon-Assas.He advises companies and company groups, French and foreign, as well as their managements on various areas of tax law (in parti...

Julien MONSENEGO is partner and co-head of the « Corporate taxation » department. He advises French and foreign companies on their domestic and international investments, strategic decisions, and day-to-day operations for more than twenty years. He has significant experience in establishing policies and documentation for transfer pricing and cross-border tax structures, R&D and intangible assets (patent and software revenues, CIR) taxation as well as sub-plan of stock-options ...

Lionel is the founder and managing partner of Galion Société d'Avocats , a Paris-based law firm advising French and international clients in Employee Benefits Law and Labor and Employment Law . He advises companies on individual employment relations , employment litigation, dispute resolution, corporate transactions, reorganizations and restructuring matters . Lionel also assists clients with Alternative Dispute Resolution (ADR), including mediation. Admitted to the Bar in 1997,...