Karen Siwek

Gwenaël Kropfinger is a tax partner and a member of both the Private Funds and Private Equity M&A Groups, as well as the firm’s Private Capital industry group. Gwenaël has extensive experience advising private equity funds and multinational groups on the tax structuring of M&A transactions, including leveraged buyouts (LBOs) and capital markets deals. In addition to his transactional work, Gwenaël is highly experienced in the formation and structuring of French an...

Jeanne BOSSI MALAFOSSE is head of the Personal Data Department and co-head of the Life Sciences Department. She has significant experience in personal data protection and various questions relating to life sciences, particularly in the area of health information systems.She assists organizations in the following subjects : compliance with personal data protection principles in all sectors preparation for Europe’s new General Data Protection Regulation regulatory framework of planned hea...

2.1 Pull-out Statement/ Quote Antitrust and Regulatory lawyer Jean-Paul Tran Thiet brings experience and know-how to clients involved in competition-related proceedings or facing regulatory stakes. He is described as “ ‘An iron hand in a velvet glove’ when it comes to defending his clients’ interests ”. (Legal 500, EU Competition and Distribution (France) 2014) 2.2 Biographical overview As head of the EU Antitrust and Regulatory Practice at SophiaLex, Jean-Paul T...

Philippe Matignon specializes in mergers & acquisitions, and more specifically in private equity and investment capital. He advises French and foreign investment funds in all their LBO and capital investment transactions. Philippe also advises teams of managers in relation to these transactions, and in corporate equity and group restructuring transactions. Philippe Matignon is also involved in restructuring operations and joint ventures on behalf of industrial players.

Bruno Martin is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Bruno, 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 Bruno is held by other top lawyers in the same geographic and legal practice area.

Emmanuelle Trombe is a top attorney recognized by Best Lawyers in the practice area(s) of Biotechnology and Life Sciences Practice, Corporate Law and Health Care Law. Emmanuelle, who practices law in paris, France, has been recognized since 2012. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Emmanuelle is held by other top lawyers in the same geographic and legal practice area.

Franck Lepron joined UGGC Avocats in 2003, after spending three years in the Public-Private Partnerships department at Landwell. In 2011 he became a partner of the firm. Since then, Franck Lepron and two other partners have overseen the Public Business Law department, whichi is one of the firm’s benchmark activities. Franck Lepron’s practice mainly focuses on public procurement law and public contracts (concessions; procurement contracts; partnership agreements) and his clientele ...

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.

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.

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.