Mark Adam Gelowitz

Mark is a key contact for the firm’s Corporate and Securities Disputes Group. Mark has a business-focused civil and securities litigation, appellate and international commercial arbitration practice.

His practice covers a wide variety of issues in corporate and commercial law including mergers and acquisitions litigation, director and officer liability, corporate governance, shareholder disputes, oppression, privacy, libel and slander, real estate lease disputes, mining litigation and class actions.

Mark has appeared before the Supreme Court of Canada, the Ontario, Alberta, British Columbia, Saskatchewan and Yukon Courts of Appeal, the superior trial courts of numerous provinces and the Ontario and British Columbia Securities Commissions. Mark’s international commercial arbitration and investor-state arbitration experience includes major arbitration hearings conducted in London, Rome, Geneva, Tokyo, Warsaw and The Hague.

Mark completed two appellate judicial clerkships, the first with the late Chief Justice E.D. Bayda of the Saskatchewan Court of Appeal in 1986 and the second with the late Justice John Sopinka of the Supreme Court of Canada in 1989. He completed the B.C.L. degree at Oxford University in 1989, between his clerking experiences. Mark has had many important legal publications including a leading Canadian legal text for the last quarter-century, co-authored with the late Justice Sopinka entitled Sopinka, Gelowitz and Rankin on the Conduct of an Appeal , Fifth Edition (Lexis/Nexis 2022).

This up-to-date version is the most current textbook available on appellate practice in Canada.

A recent decision by the Ontario Divisional Court confirms valuable principles for class action defence.