Luke Sabourin

Luke Sabourin is a litigator at Ross Nasseri with a broad commercial litigation practice.

Luke provides strategic legal advice and representation to clients, including various multi-national corporations, small family businesses, civil society organizations, and individuals, throughout all stages of the civil litigation process. Luke has appeared in the Ontario Court of Appeal, Divisional Court, Superior Court of Justice, Ontario Court of Justice, Small Claims Court and various administrative tribunals and has represented clients in shareholder and board disputes, commercial disputes, insolvency disputes, professional liability disputes, coverage disputes, class action disputes, contaminated lands disputes, and estates disputes.

Before joining Ross Nasseri, Luke practiced for three years as a litigator at a national full-service firm.
Beyond his litigation work, Luke is passionate about legal education. He recently co-taught first-year torts at the Lincoln Alexander School of Law, where he was voted “Best Practitioner Lecturer” for the 2024/2025 academic year. Luke also maintains an active pro bono practice and was named to Pro Bono Ontario’s Access to Justice Honour Roll in 2024.

Luke earned his Juris Doctor from Queen’s University, where he was a bronze medalist and received multiple academic awards. He holds an undergraduate degree in Canadian-American Political Relations from the University of Western Ontario, where he graduated with distinction and received the Western Gold Medal.

Luke was called to the Ontario bar in 2022. He is a member of the Canadian Bar Association, the Ontario Bar Association, the Toronto Lawyers’ Association, and the Advocates’ Society.

Representative Matters

• Represented defendant drug company in large multi-defendant generic drug class action up to and including certification.

• Represented multinational group of companies in a contaminated lands dispute involving allegations of wrongdoing going back to the 1920s.

• Represented large facility services company in a years-long arbitration dispute stemming from the construction of large territorial hospital.

• Brought a Handley Estate motion and secured consent dismissal for Canadian logistics company.

• Represented respondent directors and officers in a multi-million dollar oppression dispute alleging fraud against the corporate board.

• Represented a member of the College of Immigration and Citizenship Consultants in College investigation.

• Represented defendant manufacturer in large 100+ plaintiff mass tort case.

• Acted for creditor in receivership dispute involving allegations of fraud and corporate mismanagement.

• Represented defendant tenants in commercial leasing dispute, including on a motion and series of appeals stemming from a unique solicitor-client privilege issue.

Reported Decisions

• Arapakota v. Imex Systems Inc., 2025 ONCA 367. See also Arapakota et al v. Imex Systems Inc. et al, 2024 ONSC 3192 and 2024 ONSC 1395: Counsel for the successful respondents on their motion to dismiss an application for delay and successfully defending the motion results on appeal

• Jenkins v. Fletcher’s Fields Limited, 2025 ONSC 1502: Counsel for the successful defendant in obtaining security for costs against plaintiff

• One York Street Inc. v. 2360093 Ontario Ltd, 2024 ONSC 4272 and 2023 ONSC 5174: Counsel to successful defendants in a complex series of motions and appeals regarding waiver of solicitor-client privilege

• Aiello v. Niazi and Bleta, 2023 ONSC 5588: Counsel to respondent in complex family oppression dispute

• 2408-05250 (Re), 2025 ONSBT 499: Counsel to successful appellant family in an Assistance for Children with Severe Disabilities appeal

• 2407-04321 (Re), 2024 ONSBT 5858: Counsel to successful appellant family in an Assistance for Children with Severe Disabilities appeal

• Speaker, “Insurance Coverage Litigation: Critical and Emerging Issues 2025”, Osgoode Professional Development, September 30, 2025