Rozenn Lopin

With more than 15 years of experience appearing before U.S., E.U., and French regulators, Sara has consistently guided clients through the intricacies of domestic and cross-border regulatory matters. Her practice encompasses advisory services, implementation, investigations, and disputes—most notably in the financial services and banking, health care, technology and new media, and telecommunications sectors.

Bruno Deffains is a top attorney recognized by Best Lawyers in the practice area(s) of Product Liability Litigation. Bruno, 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 Bruno is held by other top lawyers in the same geographic and legal practice area.

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.

Malka Marcinkowski has been a partner at UGGC Avocats since 2018. She has expertise in competition / distribution / consumer law and Consumer Product Regulation (e.g. labelling, etc.). She also has a specialisation in the health products sector and the regulatory aspects (e.g. medicines, innovative products, medical devices, cosmetics). In this context, Malka assists clients in connection with the anti-gift law challenges, advertising of health products, etc. Her main areas of intervention (b...

Niels Dejean is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law, Private Equity Law, Private Funds and Tax Law. Niels, 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 Niels is held by other top lawyers in the same geographic and legal practice area.

Michel Sapin is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Governance and Compliance Practice. Michel, 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 Michel is held by other top lawyers in the same geographic and legal practice area.

Partner of BG2V since 2020 - Member of the Paris Bar since 2002​ ​Experience : BG2V, PDGB Avocats CMS Francis Lefebvre Avocats​ ​Education : Specialization in Labor Law and Social Protection Master 2 in Employment Law, Université Paris II Panthéon-Assas​ ​ Practice areas : Marie's practice focuses on employment law (labor law and social security law), both as an adviser and in litigation. She advises the firm's clients on individual and collective labor relations and represents ...

Guillaume Kellner is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law and Private Equity Law. Guillaume, who practices law in Paris, France, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Guillaume is held by other top lawyers in the same geographic and legal practice area.

Mounir focuses on cross-border and domestic financing matters including acquisition finance, real estate finance, project finance, debt restructuring and structured finance.

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...