Guy Pinsonnault

Guy Pinsonnault is recognized as an authority in competition and antitrust law and white collar defence. He advises clients on compliance with Canadian business regulations, and represents them in litigation with a focus on Canadian and international cartel and commercial crime matters. Guy’s clients represent a range of industries, including the automotive, construction and media, communications and entertainment sectors.

Having acted as crown attorney for more than thirty years, Guy’s extensive criminal law and competition law experience includes local, national and cross-border corporate crime investigations relating to allegations of foreign corrupt practices, fraud, commercial crime and other white collar offences. His work includes multijurisdictional files for the Competition Bureau with the United States Department of Justice Antitrust Division, as well as the RCMP Commercial Crime Division, the Integrated Proceeds of Crime Unit and Québec’s permanent anti-corruption unit (UPAC).

Prior to joining McMillan, Guy was the general counsel of the Competition Law Section, Public Prosecution Service of Canada, where he focused on the prosecution of criminal cartel matters as well as bid-rigging and fraudulent misrepresentation. He also advised on Competition Bureau policies and practices relating to search and seizure, wiretaps, immunity and plea agreements.

Approved as an independent third-party under the federal Integrity Regime, Guy provides expert advice to Public Services and Procurement Canada (PSPC) on competition law and the fraud sections of the Criminal Code.