About Irwin

Irwin began practising with the firm in 1972, after graduating from Osgoode Hall Law School. He concentrates on corporate and commercial law, including insolvency, construction liens, and commercial litigation. He's taught law courses at Wilfrid Laurier University, the University of Waterloo, and Conestoga College.

Practice areas

Civil Litigation & Dispute Resolution Business & Corporate Law Construction Law Bankruptcy & Insolvency Real Estate Law Wills, Estates & Trusts

Education & credentials

Law school
Osgoode Hall Law School

Listing compiled from public sources in July 2026. Confirm Irwin A. Duncan’s licence and standing in the Law Society of Ontario directory ↗