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Future Leaders

Future Leaders

Future Leader

WWL Ranking: Future Leader

WWL says

Marie Leppard is widely recommended by clients, who applaud her "humane, reassuring approach in combination with a brilliant understanding of competition law".


Before joining Euclid Law as a partner in November 2016, Marie was a senior associate at Clifford Chance's antitrust practice (London and Paris). Prior to that, she worked at Sullivan & Cromwell.

Marie assists clients on French, UK and EU antitrust investigations, complex multi-jurisdictional mergers and abuse of dominance cases. In recent years, Marie has been involved in a number of high-profile merger filings before the European Commission and the Competition Markets Authority in the UK.

Marie's practice focuses mainly on cartel investigations. Marie has worked on numerous high-profile cross-border cartel investigations before the European Commission, the CMA, the FCA and the US Department of Justice. Last year, Marie was involved in a number of high-profile matters, including advising a major investment bank on a number of financial services investigations, including FOREX, obtaining a competition law injunction against Google and successfully defended a generic company in two CMA's investigations into price fixing of Prochlorperazine and other generic products.

Marie has also vast experience in providing clients with compliance framework and training as well as advising on the use of the latest technologies and artificial intelligence in internal audits and cartel investigations.

Marie has extensive experience in a range of sectors including banking, finance services, insurance, energy, oil and gas, consumer goods as well as healthcare.

Marie is the author of Day-to-Day Competition Law for Businesses, the first legal book aimed at in- house lawyers and non-competition law specialists.

Marie is able to assist clients in English, French, and to some extent, Spanish.

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