About Lionel

Lionel J. Tupman's practice focuses on estate, trust, and capacity litigation and civil litigation matters, including professional liability, breach of trust, and administrative litigation involving breaches of fiduciary obligations. He's called to the bar in Ontario, Newfoundland and Labrador, Nova Scotia, British Columbia, and Alberta, and has argued numerous leading cases on Will challenges and undue influence.

Practice areas

Wills, Estates & Trusts Civil Litigation & Dispute Resolution Personal Injury Administrative & Regulatory Law

Listing compiled from public sources in September 2026. Confirm Lionel J. Tupman’s licence and standing in the Law Society of Ontario directory ↗