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Michael H. O'Brien

Michael H. O’Brien


Year of call: 1991

Year joined SF: 1989

Mike is a Partner at Sullivan Festeryga LLP. After completing his Bachelor of Arts in History and Political Science at Carleton University, he journeyed westward where he received his LL. B. From the University of Victoria. He articled with Sullivan Festeryga LLP before being called to the Bar in 1991.

While Mike’s practice focuses on all aspects of Insurance Defence issues from complex insurance actions including motor vehicle, property losses, trucking matters and professional negligence, he also has an active Criminal Defence practice. Mike routinely appears in Court across the province for both his Civil Defence and Criminal Defence clients. He has conducted numerous Jury and non-Jury trials, in both his civil and criminal practices. He has represented clients at all levels of Court in Ontario including the Supreme Court of Canada.

Mike has been and continues to be actively involved in various legal associations. He is a member of the Hamilton Law Association having served as a Trustee, maintains continuous involvement in the Hamilton Criminal Lawyers’ Association, the Hamilton Lawyers’ Club and the Hamilton Medical Legal Society. Mike also participates in provincial and national associations such as the Ontario Criminal Lawyers’ Association and Canadian Defence Lawyers.

Not one to stay idle, Mike is visibly active in the community. He has served on various Boards including the Hamilton Community Justice Fund, the John Howard Society and is currently on the Board of Head Injury Rehabilitation Ontario.

When he’s not serving on boards or appearing in court, you can find Mike on the greens perfecting his golf game, or spending time with his family.


  • LL.B., University of Victoria, 1989
  • B.A., History and Political Science, Carleton University, 1986


  • Hamilton Lawyers’ Club
  • Hamilton Criminal Lawyers’ Association
  • Hamilton Medical-Legal Society
  • Ontario Criminal Lawyers’ Association
  • Hamilton Law Association Trustee (1998–2004)
    • Nominating Committee (1992–1995)
    • Articling & Young Lawyers Committee (1992–1995)
    • Library of Excellence Committee