
Nadia Campion
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(Legal 500 Canada)
“Nadia Campion has a terrific demeanor and is great with clients and judges. She is completely fearless and is not afraid to take difficult positions.”
Bio
Acknowledged by her clients as a ‘completely fearless’ and an ‘outstanding litigator’, Nadia is engaged in the most complex and demanding files across multiple disciplines including commercial disputes, shareholder oppression applications, director and officer liability, estates and trusts litigation, class actions, and professional liability. Nadia is adept at providing cogent and strategic advice that seamlessly aligns with her clients’ business goals. Fluent in English and French, Nadia also represents clients from Quebec.
A highly persuasive litigator, Nadia has deep industry knowledge and extensive experience in trials, arbitrations and administrative hearings before the Superior Court of Justice and the Ontario Court of Appeal, as well as the Ontario Securities Commission, and the Investment Industry Regulatory Organization of Canada. She has particular expertise in Toronto Commercial List proceedings. She has specific expertise in the fields of corporate and shareholder disputes, corporate fraud, and real estate litigation.
Nadia is a frequent speaker, writer, and commentator for the Law Society of Ontario, the Ontario Bar Association, the Advocates’ Society, and the Cambridge Forum on Class Actions. She is also one of four members of the Class Proceedings Committee, which is part of the Law Foundation, appointed by the Attorney-General of Ontario.
Select Representative Mandates
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Hockey Abuse Class Action
Counsel to the CHL, WHL and OHL and their member teams in defence of a class action alleging that players are employees pursuant to relevant provincial and state legislation.
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One of the Largest Cross-Border Commercial Litigation and Insolvency Mandates in Recent History
Counsel to the Sackler Families in the Purdue Pharma CCAA proceeding, a proposed national class action, and two proposed class actions brought by the First Nations and Municipalities across Canada.
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Jewison v. Estate of Norman Jewison
Counsel to plaintiff beneficiary in a significant will and trust challenge.
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Successfully Enforced Right of First Refusal
Successfully represented a partner of a major commercial real estate limited partnership in enforcing a right of first refusal at an arbitration hearing.
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Minz v. Minz, 2023 ONSC 2094
Counsel to plaintiffs in a significant oppression action involving valuable real estate assets across Ontario.
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Regulatory Litigation
Counsel to an international accounting firm in connection with various regulatory matters.
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Premium Host Inc. v Paramount Franchise Group, 2023 ONSC 3808
Successful defence of an action against a franchise owner of a large international chain of cafes and restaurants.
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Arpege v. Canadian Tire Corporation
Counsel to the plaintiff landowner in a lengthy environmental contamination court action.
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Airfield Developments Inc. et al v. QR MarHoldings LP
Counsel to the plaintiffs in a significant dispute arising over a failed real estate purchase transaction.
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Confidential Lease Arbitration
Counsel to a large engineering firm in a complex, multi-party action involving Toronto’s electrical substation.
Recognitions
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Canadian Legal Lexpert Directory 2025
We have maintained our leading position in litigation among top Canadian law firms in the 2025 Lexpert Directory.
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Lexpert’s Leading 500 Cross-Border Lawyers 2025
Five of our lawyers are recognized in the 2025 Lexpert 500 guide, which profiles an exclusive group of top ranked lawyers across practice areas important to in-house counsel across America.
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Lexpert Special Edition: Litigation 2024
Twleve of our lawyers are recognized alongside leading Canadian litigators in the Lexpert Special Edition: Litigation 2024 guide.
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Legal 500 Canada 2025
We are ranked in Dispute Resolution, Restructuring & Insolvency, and Insurance by The Legal 500 Canada 2025 guide.
Credentials
- Credentials
- Memberships
- Called to the Ontario Bar, 2006
- B.A. (with Honours), McGill University (Top 5%)
- LL.B, University of Ottawa (Magna Cum Laude)
- JD, Michigan State University (Summa Cum Laude)
- Certificate in Civil Law from Universidad de Panamericana in Mexico
- Clerkship: Superior Court of Justice (Ottawa)
- Class Proceedings Committee, The Law Foundation of Ontario, Member
- Advocates’ Society, Frequent Speaker
- Ontario Bar Association, Frequent Speaker
- Trial Lawyers Association, Frequent Speaker
- Women’s White Collar Criminal Defense Association