- Osgoode Hall Law School, LL.B.
- Osgoode Hall Trial Advocacy Course
- University of Calgary, B.Comm.
- University of Calgary, B.A. (English)
Mary was ranked as a Benchmark Litigation Canada 2015 Future Star – Ontario (Class Action; General Commercial). Mary’s commercial litigation practice focuses on tax litigation, class actions, contract disputes in court or in arbitrations and other general commercial litigation, franchise disputes, and assisting stakeholders in receiverships, bankruptcies and proceedings pursuant to the Companies’ Creditors Arrangement Act. Mary has appeared in the Ontario Court of Appeal, the Ontario Superior Court (including the Commercial List), the Federal Court, the Alberta Court of Queen’s Bench, the Manitoba Court of Queen’s Bench, the Supreme Court of Newfoundland and Labrador, and the Tax Court of Canada. Before joining Osler, Mary clerked at the Court of Appeal for Ontario. Mary worked to establish several pro bono programs within the firm and has appeared in the Court of Appeal on a pro bono basis numerous times. She won a 2011 Lexpert Zenith Award for her work assisting a UN employee obtain a widower’s benefit after his same-sex partner died while working for the UN.