Léon is a partner in the Investigations & White Collar Defence and the Dispute Resolution practices. Léon is retained in complicated high-stakes domestic and international white-collar criminal cases, usually encompassing significant commercial, civil and administrative ramifications.

He represents clients in high-profile investigations and prosecutions relating to white-collar and regulatory offences. His particular expertise includes challenging search warrants, wiretaps and other investigatory techniques. He also represents corporations and individuals in multijurisdictional investigations, conducts confidential internal investigations and carries out asset recovery in extraordinary circumstances.

Léon has appeared at all levels of court, including the Supreme Court of Canada. He was also appointed amicus curiae of the Supreme Court by the Chief Justice of Canada in an appeal where criminal law and civil law were closely intertwined. The Court unanimously upheld his position from the bench.

He serves as a judge at the International Criminal Court Moot Competition in The Hague. Léon founded Davies’ International Investigations & White Collar Defence Summit held in Montréal and is the practice coordinator for Davies’ Investigations & White Collar Defence team and member of the Barreau du Québec (Bar of Québec) and the Law Society of Ontario.

Select Recognition: Chambers Canada Nationwide, White-Collar Crime & Government Investigations; Benchmark Canada; Best Lawyers in Canada (Lawyer of the Year – Criminal Defence);  Euromoney’s Rising Stars Expert Guide; Young Bar Association of Montréal, Lawyer of the Year.