Michael O'Brien

Tyr LLP - Canada


488 Wellington Street West, Suite 300-302
Toronto, ON, M5V 1E3

+1 416 477 5525

40 & Under List

Future Star

Practice area:

Class action
Dispute resolution

Michael is a partner at Tyr LLP, where he carries on a diverse litigation practice, which includes commercial and civil matters, arbitration, investigations and class actions. Michael represents publicly-traded and privately held companies, directors, officers, shareholders and professionals in all manner of proceedings before courts, arbitral tribunals and regulators. He also has considerable experience advising businesses and individuals, including public officials, responding to inquiries from regulatory bodies and legislative committees. Clients value the tact and judgment that Michael brings to complex and sensitive matters.

Michael represents both plaintiffs and defendants in class actions. He was a contributing author to the fourth and fifth editions of Defending Class Actions in Canada, is the Vice-Chair of an American Bar Association subcommittee on Class and Derivative Actions, the former editor of the Class Action chapter of the ABA’s annually published Recent Developments in Corporate and Business Litigation, and co-author of its Cross-Border and Multijurisdictional Proceedings chapter. 

Michael teaches the Corporate Remedies course for the Professional LLM Program at Osgoode Hall, York University, and is a faculty advisor for the Ryerson LPP Trial Advocacy Training Workshop.


 Updated April 2022