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Mark A. Gelowitz
Partner

Osler, Hoskin & Harcourt LLP

Mark A. Gelowitz is a senior partner in the litigation department of Osler, Hoskin & Harcourt LLP. He is a key contact for the firm’s National Corporate and Securities Litigation Group, and the Commercial Arbitration Group. Mark has a business-focused civil and securities litigation, appellate litigation and international commercial arbitration practice. His cases have covered a wide variety of issues in corporate and commercial law including mergers & acquisitions, directors’ & officers’ liability, oppression remedy, privacy, product liability, mining litigation and class actions procedure. Mark has appeared often before the Supreme Court of Canada and at all levels of courts and tribunals in jurisdictions across Canada, and in international arbitrations in Canada, Italy, Japan, Poland, Switzerland and the UK. He completed the BCL degree at Oxford University in 1989 between clerking for the Chief Justice of Saskatchewan and the late Justice Sopinka of the Supreme Court of Canada. Mark has had a number of legal publications including a book co-authored with the late Justice Sopinka entitled Sopinka and Gelowitz on the Conduct of an Appeal, 4th Ed. (LexisNexis 2018). Mark maintains a blog on recent developments in Canadian appellate law and practice at conductofanappeal.com.


Year Called to the Bar:1987 (SK); 1991 (ON)
100 King St W, Suite 6200, 1 First Cdn Pl, PO Box 50
Toronto, ON
Phone: (416) 862-4743
Fax: (416) 862-6666
E-mail: mgelowitz@osler.com

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Mentioned in Lexpert Publications

  • Apr 19, 2017
    The Ontario Superior Court of Justice’s decision in Atos v. Sapient Canada, which awarded damages to the former for breach of contract.

Mark A. Gelowitz

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Mark A. Gelowitz

is also listed in the following publication(s)

Special Edition Litigation
US/Canada Cross-Border Guide – Litigation