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Heather Pessione


[email protected]

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Heather is BLG’s Toronto Office Research Partner. Heather’s practice focuses on supporting corporate and litigation clients and lawyers with complex legal strategy, research and written advocacy.

She specializes in corporate governance and thought leadership for not-for-profit corporations, including public hospitals, regulators, and Ontario Health Teams.

Heather regularly assists with written materials for appeals to the Court of Appeal and the Supreme Court of Canada, and drafts opinions, pleadings, factums, corporate documents and publications. She also specializes in appellate and public law advocacy, and in the health and energy sectors.

Heather has appeared at all levels of court in Ontario and at the Supreme Court of Canada.

Heather was a summer and articling student at BLG and joined the firm as an associate in September 2006. Heather practiced in a number of litigation-related practice areas at BLG as an associate and as a partner before becoming the Toronto Office Research Partner. She studied bioethics before transitioning into law.


  • Teva Canada Ltd. v. TD Canada Trust, [2017] 2 SCR 317
  • Iroquois Falls Power Corporation v. Ontario Electricity Financial Corporation, 2016 ONCA 687 (leave to appeal to the SCC denied)
  • Kazemi Estate v. Islamic Republic of Iran, [2014] 3 SCR 176
  • Amaratunga v. Northwest Atlantic Fisheries Organization, [2013] 3 SCR 866
  • Canadian National Railway Co. v. John Doe, [2013] OJ No. 26 (SCJ)
  • Canadian National Railway Co. v. Plain, [2012] OJ No. 6272 (SCJ), [2012] OJ No. 6184 (SCJ)
  • R. v. N.S., [2012] SCJ No. 72 (SCC)
  • Ontario Nurses’ Assn. v. Rouge Valley Health System (2008), 302 DLR (4th) 751 (Div. Ct.)
  • OPSEU v. Central East Local Health Integration Network, [2008] OJ No. 3243 (Div. Ct.)

Beyond our Walls

Professional Involvement

  • Member, Canadian Bar Association
  • Member, Ontario Bar Association
  • Member, Law Society of Upper Canada
  • Member, Canadian Bioethics Society
  • Member, The Advocates' Society

Community Involvement

  • Volunteer, Pro Bono Law Ontario
  • Volunteer, LAWS Program
  • Volunteer board member, Friends of Humberside Collegiate Institute

Bar Admission & Education

  • Ontario, 2006
  • JD, Université de Toronto, 2005
  • MA, Université Dalhousie, 2001
  • BA (Hons.), Université de Toronto, 2000