François Vignaud

Alexandre Moustardier has developed an advisory and litigation activity, upstream and downstream, in environmental law and town planning / construction law with institutions, SMEs / SMIs, industrialists, developers, companies involved in particular in cement and quarrying, energy, agrifood, chemicals, waste treatment, etc. Managing Partner of the firm ATMOS Avocats (formerly named Selarl Huglo Lepage & Associés until December 31, 2017), Alexandre Moustardier has developed, for twen...

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

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

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...

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.

Olivier joined Rivière I Avocats I Associés in 2006, as a junior associate dedicated to urban planning and heritage law issues in the real estate restoration operations department, after initial professional experience within a leading law firm. His areas of expertise include urban planning and development, environmental, public property, public real estate contracts and energy. From the moment he joined the firm, Olivier had the ambition to partner with and make the firm count ...

Olivier Purcell is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law and Transportation Law. Olivier, 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 Olivier 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...

David Pilorge is a top attorney recognized by Best Lawyers in the practice area(s) of Administrative Law. David, who practices law in Paris, France, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.

Patrick Jaïs is a top attorney recognized by Best Lawyers in the practice area(s) of Capital Markets Law, Corporate Law and Mergers and Acquisitions Law. Patrick, who practices law in Paris, France, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick is held by other top lawyers in the same geographic and legal practice area.