Associate announcement

Michael O’Brien joins Tyr

November 19, 2019

Tyr LLP is excited to welcome Michael O’Brien to its growing litigation team. Michael joins Tyr after seven years with McCarthy Tétrault LLP, where he carried on a diverse trial practice focused on complex matters.

Michael has been lead counsel in trials, hearings and appeals before various courts and administrative tribunals in Ontario and is a trusted advisor to publicly traded and privately held companies, public institutions, investors, professionals and high-profile individuals.

Michael is the Vice-Chair of the American Bar Association’s Business Law Section subcommittee on Class Actions, and is an editor and regular contributor to the Class Actions chapter in the ABA’s annually updated Recent Developments in Business and Corporate Litigation. He is active in the community and has held a number of leadership positions on the Boards of charitable organizations.

Michael will work closely with his colleagues at Tyr to continue to achieve success for his clients inside the courtroom and out.

Tyr is looking for lawyers in their first two years of practice.  Check us out:


Tyr LLP is a litigation firm based in Toronto. Tyr specializes in trial work and providing strategic solutions to complex disputes. Founded by a group of highly experienced litigators from one of Canada's leading litigation firms, Tyr's lawyers have an established track record of success, and have been and are involved in a number of precedent-setting cases. Tyr’s lawyers are consistently highly ranked in peer-reviewed publications, including Chambers, Lexpert, Benchmark Canada, IAM Patent 1000, World Trademark Review 1000 and Best Lawyers. Tyr is committed to providing excellent client service and innovative, practical and efficient solutions that align with its clients' objectives. Tyr has the expertise and bench strength to take on the biggest and most important cases, and the flexibility to handle smaller matters in an innovative, efficient and cost effective manner.

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Michael J.P. O'Brien


Law School

University of Windsor

Year Of Call


Area Of Practice