Donald Houston > McCarthy Tétrault > Toronto, Canada > Lawyer Profile

McCarthy Tétrault
66 Wellington Street West
Suite 5300, TD Bank Tower Box 48
Toronto ON M5K 1E6

Work Department



Competition law and litigation practice includes defending criminal prosecutions, Competition Tribunal proceedings and private actions, including class actions. Has frequently represented the Commissioner of Competition. Significant cartel and merger practice, both domestic and international. Extensive experience litigating Competition Tribunal cases. Adjunct Professor at Western University Law School.


Named Canadian Competition “Lawyer of the Year” for 2019 by Best Lawyers.


Former Chair of CBA National Competition Law Section; member of the ABA and IBA.


“Litigating Competition Law in Canada”, LexisNexis, 2018 (contributing author); “Competition Law,” in Intellectual Property Disputes (Thomson/Carswell); “The Trial of an Action” 2nd ed, 1998, with the late Honourable John Sopinka.