About Irwin A. Duncan

Irwin A. Duncan is a Waterloo lawyer at Duncan, Linton LLP whose practice is built on corporate and commercial law.

Irwin's time with the firm goes back to 1972. Before joining, Irwin finished law school at Osgoode Hall and then articled with a Toronto firm. Walter McGibbon was a mentor to Irwin, and to J. David Linton as well.

Teaching has been part of the picture too. Irwin has given law courses at three local schools: Wilfrid Laurier University, the University of Waterloo and Conestoga College. In court, Irwin's lien work has gone as far as the Court of Appeal for Ontario, acting for a subcontractor in a 2007 appeal.

Away from the office, Irwin flies. As a licensed pilot, Irwin follows aviation matters closely and is a past chair of the Waterloo-Guelph Regional Airport Commission.

Practice areas

Civil Litigation & Dispute Resolution Business & Corporate Law Construction Law Bankruptcy & Insolvency

Corporate and commercial matters

Corporate and commercial law is the base of Irwin's practice at Duncan, Linton.

Insolvency and restructuring

Irwin's practice takes in bankruptcy, insolvency and restructuring matters.

Construction liens

Construction lien matters are part of Irwin's work too.

Commercial litigation

When a commercial dispute heads to court, Irwin takes on the litigation.

Education & credentials

  • Law degree, Osgoode Hall Law School

Notable cases

  • Kennedy Electric Limited v. Dana Canada Corporation, 2007 ONCA 664

    Irwin A. Duncan and Michael A. van Bodegom, of what was then White, Duncan, Linton LLP, acted for Cassidy Industrial Contractors Ltd., a subcontractor whose lien over work on an assembly line for Ford truck frames had been discharged at trial. The Court of Appeal dismissed the appeals, and in 2008 the Supreme Court of Canada dismissed the applications for leave to appeal with costs.

Decisions where Irwin A. Duncan appeared as counsel, from public court records. Past cases don't predict future results.

In the community

  • Irwin has been active with the Waterloo Rotary Club.
  • Irwin has also been active with Junior Achievement of Kitchener-Waterloo.

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This listing was generated by AI from public sources in October 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm Irwin A. Duncan’s licence and standing in the Law Society of Ontario directory ↗

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