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Who's Who Legal
Who's Who Legal
Future Leaders

Future Leaders

Future Leader

WWL Ranking: Future Leader

WWL says

Lionel Lesur is highly esteemed for his top-notch knowledge of complex commercial contracts, as well as his superb negotiation skill in M&A transactions. 


Lionel Lesur, aged 41, is a partner at McDermott Will & Emery, based in Paris. His practice focuses on European and French competition law as well as M&A, for domestic and international companies from a broad range of industries including life sciences, fashion and luxury and consumer goods

Lionel has in-depth experience in international merger control and antitrust proceedings. He also regularly advises clients in relation to private enforcement, distribution strategies and compliance programmes.

Lionel authored numerous articles, guides, books or chapters of books on European and French competition law, notably on private enforcement, minority shareholdings issues, and leniency programmes. Lionel served in 2013 on the “competition” commission of the Club des Juristes, the first legal think tank in France. Since 2008, Lionel is also the French correspondent of the Italian Observatory for Competition (Osservatorio Permanente sull'Applicazione delle Regole di Concorrenza).

He is a visiting professor of competition law at several regulatory authorities, major universities and business schools in France and abroad, including the Vietnamese and Algerian Competition Authorities, the universities of Paris II Panthéon Assas, Aix-en-Provence and La Cattolica in Rome, HEC Business School, and ESCP Europe.

Early in his career, Lionel practised law in Rome in one of the major Italian law firms and is a member of the Rome Bar. As such, he advises a significant number of Italian clients active in France, leveraging on the Italian desk he created at McDermott Paris.

Lionel graduated from several major universities and business schools, including University Paris II – Panthéon Assas, HEC Business School (Grande Ecole) and CEMS.

Since 2013, Lionel is regularly listed in major legal rankings, as a highly recommended competition law specialist.

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