Madeleine is an associate in our Disputes group. She maintains a broad civil and commercial litigation practice with a focus on corporate and securities disputes.
Madeleine’s experience includes class action defence, capital markets enforcement including Ontario Securities Commission investigations, as well as matters before the Ontario Capital Markets Tribunal and British Columbia Securities Commission, commercial arbitration, government and internal investigations, insolvency matters and other general commercial litigation.
Madeleine writes extensively on a range of legal topics including corporate and securities law, commercial arbitration, class actions and constitutional law. Her work has been published in the Annual Review of Civil Litigation, 2024 Edition (Thomson Reuters), the Toronto Law Journal (March 2025 Edition) and Key Developments in Environmental Law, 2023 (Thomson Reuters).
Before turning to law, Madeleine trained as a classical musician and obtained her Bachelor of Music in voice performance from the Glenn Gould School of the Royal Conservatory of Music. Madeleine remains involved in Toronto’s classical music community, including as co-chair of Music Toronto’s Young Professionals’ Circle, an initiative aimed at growing the next generation of classical music patrons.
Areas of Expertise
Latest Insights
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Blog January 27, 2026
Ontario court grants anti-suit injunction to enjoin foreign arbitration in ongoing crypto litigation
The court granted an anti-suit injunction preventing Binance from pursuing arbitration in Hong Kong related to an Ontario class action.
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Osler Update December 1, 2025
From pit wall to policy: what Lundin means for public company disclosure
The SCC’s recent decision provides guidance on the distinction between material facts and material changes under Ontario securities law.
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Osler Update August 8, 2025
Federal government ordered to pay investors hundreds of millions for failing to live up to wireless spectrum licence auction promises
An Ontario decision has held the federal government liable for hundreds of millions of dollars in damages to investors in wireless spectrum licences.
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Blog July 23, 2025
Expanded enforcement powers: is CIRO now exercising ‘statutory’ powers?
Recent statutory amendments have expanded the Canadian Investment Regulatory Organization’s (CIRO) enforcement toolkit.
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Awards and Recognition
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Recipient of the Dean’s Letter for Cumulative Academic Excellence – standing in the top 3% of the graduating class (Osgoode)
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IP Osgoode David Vaver Medal for Excellence in Intellectual Property Law
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Dentons Canada LLP Prize for excellence in academic studies and making a significant contribution to the Moot Court Program
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Clifton H. Lane Memorial Prize for highest standing in Property Law
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Ronald J. Rolls ’58 Q.C. Prize for highest standing in Legal Process (Civil Procedure)
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Harold G. Fox Intellectual Property Moot – Gordon F. Henderson Award for Best Respondent Factum
Media Mentions
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Osler News April 13, 2026
Osler’s pro bono stars shine on PBO 2025 honour roll
Pro Bono Ontario has recognized 12 Osler lawyers on its fourth annual Honour Roll.
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Speaking and Writing
Speaking Engagements
The Advocates’ Society, 15th Annual Securities Symposium
Panelist, ‘Recent trends in ESG-related securities regulation and enforcement’, September 2025
Osgoode Hall Law School, U.S. Securities Regulation in Comparative Perspective
Guest Lecturer, ‘Materiality and Continuous Disclosure’, January 2025
Published Work
Inadvertent Disclosure of Privileged Materials: Consequences and Best Practices for Counsel, Toronto Law Journal, March 2025 Edition (Toronto Lawyers Association) (co-authored with Mary Paterson)
Riding the Constitutional Waves: The Supreme Court’s Guidance on the Federal Environmental Assessment Pendulum, Annual Review of Civil Litigation, 2024 Edition (Carswell) (co-authored with Sean Sutherland and Ankita Gupta)
Stop, Think, and Disclose – Disclosure Obligations for Partial Settlement Agreements in Environmental Litigation, The Eight-Minute Environmental Lawyer 2023, (Law Society of Ontario) (co-authored with Jennifer Fairfax and Ankita Gupta)
Unprecedented Fines and the Proposed Expansion of Ontario’s Administrative Penalty Regime: Reflections on Increased Environmental Enforcement and a Path Forward, Key Developments in Environmental Law 2023, (Thomson Reuters: Toronto) (co-authored with Jennifer Fairfax, Evan Barz, and Sarah Greenwood)
Credentials
Education
- Osgoode Hall, J.D.
- The Glenn Gould School of the Royal Conservatory of Music, B. Mus. Hons.
Languages
- English
