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Jan D. Weir


Jan is a commercial litigator who has worked with small and medium businesses and who prides himself on dealing effectively and efficiently with his clients while respecting their financial resources. He has worked on a variety of cases, from simple issues to shareholder disputes to major complex litigation, including Greymac Trust and Dome Petroleum. His experience in commercial litigation has also been applied to matrimonial matters involving asset valuation, fraud and hidden assets.


He is a recognized expert in commercial litigation, contributing columns to Canadian Lawyers Weekly for over 10 years. He also frequently contributed articles on technology issues to the Advocate’s Brief, the publication of the Advocates Society of Ontario, and has authored the textbook Critical Concepts of Canadian Business Law which is widely used in business schools across Canada.


Jan is a former Chair of the Technology Task Force of the Advocates Society and is a former instructor in civil litigation in the Bar Admission course run by the Law Society of Upper Canada. A frequent guest lecturer, he has spoken at a variety of business and law schools and currently teaches Business Law at the University of Toronto.

He regularly publishes articles on his blog at Medium.

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