Anna L. Marrison  


Executive Summary

Anna Marrison advocates for healthcare clients and their staff in complex administrative matters and civil law suits, including class actions. Anna has acted as lead counsel before all levels of courts in Ontario, as well as appearing before administrative tribunals, including Coroner’s Inquests, the Health Professionals Appeal and Review Board (on physician privileging disputes and regulatory college appeals), regulatory colleges, and the Consent and Capacity Board.

Anna also provides advice on a wide range of health law-related issues, including uninsured health services, disclosure obligations, the release of personal health information to third parties, regulatory college proceedings and litigation, and legal issues relating to telehealth. She also provides advice in the context of complex and challenging consent scenarios.

Representative Work

  • Acts for hospitals, public and private healthcare clinics, pharmaceutical clients, municipalities, and health care providers in medical malpractice and other civil litigation, including class actions.
  • Assists healthcare clients with review and drafting of policies and guidelines and advises on regulatory compliance.
  • Successfully represented a hospital and its nursing staff at a jury trial arising from postoperative infections Sacks v. Ross, 2015; lead counsel at Court of Appeal (appeal dismissed; leave to SCC outstanding) Sacks v. Ross, 2017 ONCA 773 (CanLII) — 2017-10-05.
  • Hospital counsel at Consent and Capacity Board Hearing RR (Re), 2016 CanLII 58683 (ON CCB).
  • Represented a hospital at a Coroner's Inquest arising from a death due to complications of Sickle Cell disease - Osae (Re), 2012 CanLII 70988 (ON OCCO).
  • Successfully represented a municipality and hospital at the Court of Appeal on limitation period motion, including the application of limitation periods to Charter claims Alexis v. Darnley, 2009 ONCA 847 (CanLII).

Publications & Presentations

  • Co-author, "Court of Appeal Reinforces Evidentiary Principles of Causation", BLG Insurance and Tort Liability Bulletin, October 2018.
  • Panel Speaker (with Kate Crawford and Glenn Zakaib) “The Essentials of Health Law Class Actions in Canada”, Webinar, March 8, 2018.
  • Faculty – “Understanding and Dealing with the Litigation Process - Clinical Risk, Negligence & Claims Management in Health Care,” Osgoode Professional Development, February 9, 2018.
  • Co-author, “Proving Mental Injury - The Supreme Court Strikes Lower Courts' Requirement for a Recognized Psychiatric Illness But Confirms Injury Must be Serious and Prolonged”, Bulletin, June 6, 2017.
  • Speaker, “What are the Legal Risks of Virtual Care?,” Osgoode Professional Development Webinar, February 21, 2017.
  • Speaker, “Patient Relations, A Legislative Lens”, OHA, February 13, 2017.
  • Co-author, “CCB Rules no Jurisdiction Where Patient Declared Brain Dead”, Bulletin, November 1, 2016.
  • Speaker, "Court House Series: Challenging Credibility," The Advocates Society, February 2015.
  • Speaker, "Recent HPARB cases: disruptive physicians, end of life care and resource allocation," BLG Seminar, January 2015.

Rankings & Recognitions

  • Recognized in the 2020 edition (and since 2018) of The Best Lawyers in Canada® (Health Care Law, Medical Negligence).
    Recognized in the 2019 edition of Benchmark Canada – The Definitive Guide to Canada’s Leading Litigation Firms & Attorneys as a Future Star.
  • Recognized in the 2019 and 2017 editions of The Canadian Legal Lexpert® Directory (Medical Negligence).