Gannon’s practice focuses on complex commercial and corporate litigation, class actions, international arbitration, and public law. He has extensive trial-level and appellate experience, regularly appearing before all levels of court in Ontario and the Supreme Court of Canada.
In 2023, Gannon was recognized as a Future Star by Benchmark Litigation Canada and named to the Benchmark Litigation 40 & Under List.
Gannon advises clients on a wide range of disputes and issues. He has particular experience with matters involving commercial contracts, negligent performance of services, professional negligence, institutional negligence, fiduciary duties, corporate oppression, shareholder and partnership disputes, legal privileges and immunities, injunctive relief, constitutional law, administrative law, statutory interpretation, private international law, letters of request (also called letters rogatory), and the recognition and enforcement of judgments and arbitral awards.
A frequent writer and speaker, Gannon has been published in many academic, legal, and industry journals and other publications, including the Alberta Law Review, the Commercial Litigation and Arbitration Review, and The Advocates’ Journal. He has contributed to policy papers as well as legal treatises and similar resources. He is often invited to speak at national and international conferences and events, and has been interviewed on the radio and quoted in print media, including the Financial Post and the Toronto Star.
Gannon is Chair of the Canada Committee of the American Bar Association, International Law Section, and sits on the Content Management Committee of the Litigation Section. He is also an active member of The Advocates’ Society.