James Doris



Tel: +1 647 519 5840


Bar Admissions: Ontario, 1992

Practice Areas:

  • Arbitration
  • Class Action Defence
    • Appellate Litigation
    • Commercial Disputes
    • Competition & Anti-Trust Litigation
    • Defamation Claims
    • Directors & Officers Liability
    • Franchise Disputes
    • Gaming Disputes
    • Professional Negligence
  • Employment Litigation
  • Insolvency & Creditor Disputes
  • Investigations & Regulatory Defence
  • Shareholder & Securities Disputes

Prior to founding Tyr LLP in June 2019, Jim was a senior partner at Davies Ward Phillips & Vineberg LLP in the Litigation Group where he practiced for over twenty five years.

Jim is an experienced litigator handling complex commercial disputes. He excels at identifying critical business issues and litigating complex cases in a practical way to achieve his clients' business objectives. His areas of expertise include shareholder and oppression remedy actions, class actions, securities disputes, insolvency, gaming and competition matters. He has appeared as counsel before all levels of court in Ontario, the Supreme Court of Canada and a variety of other courts and administrative tribunals across the country.

Jim has received numerous recognitions, including Chambers Canada: Canada's Leading Lawyers for Business—Litigation, General Commercial: Ontario, Benchmark Canada—Competition (Litigation Star); General Commercial (Litigation Star), The Canadian Legal Lexpert Directory—Litigation: Corporate Commercial; Litigation: Directors & Officers Liability; Litigation: Securities, and The Best Lawyers in Canada—Class Action Litigation; Corporate and Commercial Litigation; Gaming Law (Lawyer of the Year 2018, Toronto); Insolvency and Financial Restructuring Law; and Securities Law. He is a member of the Board of Directors of The Advocates' Society.

Click on a case to view details.

Agnico Eagle Mines Limited American International Group Inc. Insurance Dispute Atlantic Packaging Products Ltd. Badesha v. Cronos Group Inc. Baffinland Iron Mines LP and Baffinland Iron Mines Corporation v. Tower-EBC G.P./s.e.n.c. BCE Inc. BCE Inc. re Privatization Bioproducts Inc. Canada Pipe Company Charlotte Schickedanz and Wagema Holdco (CDS) ULC v. Wagema Holdings Limited Crystallex International EMEA Nortel Debtors Eugene Melynk Former Directors of Sears Canada General Motors of Canada Company re Buick Dealers GrowthWorks Ltd. Individual Plaintiffs J.H. Cochrane Investments Limited et al. v. Deepak Ruparell JPMorgan Chase Co. Katanga Mining Law Firm MHR Fund Management MI Developments Inc. MI Developments Inc. Oppression Defence Ontario Lottery and Gaming Corporation Pacifica Paper Inc. Royal Trustco Solar Income Fund Inc. Strike Holdings STV Inc. Uppalcorp Inc. v. Royal Bank of Canada
Community Involvement
  • Director, The Advocates' Society
  • Former member of Securities Proceedings Advisory Committee, OSC's Capital Markets Tribunal
Professional Affiliations
  • Canadian Bar Association
  • The Advocates' Society
Teaching Engagements

Jim has taught civil litigation at the Law Society of Ontario. He has been an instructor at the Intensive Trial Advocacy Workshop at Osgoode Hall Law School's Professional Development program, and he is a frequent skills instructor for The Advocates' Society.

  • McGill University, BCL/LLB (University Scholar), 1990
  • University of Toronto, BA (Honours), 1986
  • Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada
  • Chambers Canada: Canada's Leading Lawyers for Business—Litigation, General Commercial: Ontario
  • Benchmark Canada: The Definitive Guide to Canada's Leading Litigation Firms & Attorneys—Competition (Litigation Star); General Commercial (Litigation Star)
  • Report on Business/Lexpert Special Edition Canada's Leading Litigation Lawyers
  • Lexpert Special Edition Leading Canadian Lawyers in Global Mining
  • The Canadian Legal Lexpert Directory—Litigation: Corporate Commercial; Litigation: Securities; Litigation: Directors & Officers Liability; Litigation: Class Actions
  • The Best Lawyers in Canada: Class Action Litigation, Corporate and Commercial Litigation, Director and Officer Liability Practice, Gaming Law, Insolvency and Financial Restructuring Law, Securities Law