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Catherine McKenzie

514 934-7727
Assistant: Jasper Andales
514 935-4460 extension 246

Languages : English and French

Quebec Bar — 2000

Catherine practices mainly in the areas of constitutional law, employment and class actions. She also has important experience in injunction matters and other extraordinary recourses such as Anton Piller and Norwich Orders, and professional liability of investment advisers. She is currently a co-lecturer at McGill University, where she teaches Trial Advocacy.

Catherine has been a member of the IMK team since 1997 and was called to the bar in 2000. Through cases such as the constitutional challenge to tobacco advertising restrictions, various large-scale class actions such as Adams v. Amex and Lac Mégantic, Catherine has acquired vast trial experience, as well as the opportunity to plead before all levels of court including the Supreme Court of Canada.

Representative work

Bramante v. McDonald’s Restaurants of Canada Limited: McDonald’s in a class action related to claims that the advertising of toys and Happy Meals violates the Quebec Consumer Protection Act. Presently at the certification stage.

Zouzout v. Wayfair LLC: Wayfair LLC in a class action related to price errors appearing on Wayfair’s website. Presently at the certification stage.

Rahim v. the Minister of Immigration and the Gouvernement du Québec: Rahim in a class action for the reimbursement of fees to applicants for a Quebec Selection Certificate affected by the application of a new restrictive selection grid.

El-Alloul v. PGQ: Rania El-Alloul in her motion against the decision of Judge Marengo of the Court of Quebec to refuse to hear her on the grounds that she was wearing a hijab. The case is presently in appeal.

Adams v. Amex:  Adams in a class action against Amex at all levels of Court including the Supreme Court of Canada in 2014, to recover hidden foreign exchange commissions for class members.

Lac Mégantic Class Action: Devlar during the certification hearing and participated in the negotiation of the settlement of the matter.

Latif v. Bombardier: Latif in his personal claim for loss of employment income due to Bombardier’s application of a US decision regarding his flight safety status, at all levels of Court including the Supreme Court of Canada in 2015.

Tugliq Énergie S.A.R.L. v. Stolt LNGaz Inc.: Several defendants in injunction proceedings brought before the Superior Court involving a liquefied natural gas facility in Bécancour Quebec.

Blais v. Imperial Tobacco: JTI-MacDonald Inc. in the largest class action in Canada’s history related to product liability claims. Participated in a two and a half year trial. The case is presently in appeal.

JTI-MacDonald Inc. v. Attorney General of Canada: JTI-MacDonald Inc. in an action seeking to have marketing restrictions declared unconstitutional. The case went to the Supreme Court of Canada in 2007.


LL.B., B.C.L., McGill University (Great Distinction), 1999
B.A. (Honours) in History, McGill University, 1995

Industry recognition

Named Fellow of the Litigation Counsel of America (2019)

Named to the International Association of Defense Counsel, 2019

Recognized in the 2019 edition of LEXPERT as Repeatedly Recommended: Class Actions

Ranked in the 2019 edition of Chambers and Partners in the Quebec Litigaton: General Commercial Band 4 category

Ranked in the 2017 and 2018 editions of Chambers and Partners as “up and coming” in the General Commercial Litigation in Québec category

Ranked “Litigation Star” by Benchmark Litigation in the practice areas of arbitration, class actions, commercial litigation and employment law for 2017, 2018 and 2019

Recognized by Best Lawyers in Canada in the fields of commercial and corporate litigation (2015, 2016, 2017, 2018, 2019 and 2020) and class actions (2016, 2017, 2018, 2019 and 2020)


Canadian Bar Association
The Advocates’ Society

Professional activities

Member of the Executive Committee of the Canadian Bar Association, Quebec Branch, Class Actions Section (2017-current)

Governor of the Quebec Bar Foundation (2017-2019)

Member of the Advocates’ Society’s SCC Interventions Task Force (2016-2017)

Member-at-Large, National Executive Committee-Employment & Labour Section, Canadian Bar Association, 2017-2018

English-speaking section of the Bar of Montreal: member of the Executive Committee (2014-2018)

Member of the Justicia Project group of representatives, 2017-current

Member of the board of directors of Bishop’s College School (2008-2011)

Co-Chairman of the Liaison with Judicial Services Committee of the Montreal Bar (2009-2010)


Sessional lecturer at the McGill University Faculty of Law in trial advocacy (2006-2010; 2016-2019)

Recent publications

Co-author of “JurisClasseur – Procédure Civile II – Action collective – Avis, déroulement, jugement et mesures d’exécution”, with Mathieu Bouchard and Jean-Michel Boudreau, LexisNexis inc., 2016-present (annual editions)

Co-author of “LegisPratique – Code de procédure Civile annoté”, LexisNexis, 2008-2019 (annual editions)

Speaking Engagements

Presentation at the 16th National Symposium on Class Action, Osgoode Hall Law School, May 2019

Presented “L’Art du contre-interrogatoire”, The Advocates’ Society, April 12, 2019

Presented “Religious Symbols: How to we move forward?”, Muslim Law Students’ Association, McGill University Faculty of Law, April 2, 2019

Presented “Actions collectives : le rôle de l’avocat vis-à-vis les membres du groupe”, The Canadian Bar Association, November 27, 2018

Presented “L’Art de l’interrogatoire en chef”, The Advocates’ Society, October 12, 2018

Presented at the 9th Annual Class Actions Colloquium of the Ontario Bar Association, “Cross Country check Up, and Beyond”, December 4, 2017

Presented at the “Colloque national sur les recours collectifs – développements récents au Québec, au Canada et aux États-Unis (2017)” on transactions in class actions, March 2017

Caselaw Update: 2015 SCC Class Action Decisions, Osgoode Hall Class Action Conference, April 2016

Presented at the “Colloque national sur les recours collectifs – développements récents au Québec, au Canada et aux États-Unis (2016)” on execution of class action judgments, March 2016

Introduction to the new Civil Code of Procedure – Appeal provisions, English Bar of Montreal, October 2015

Caselaw Update: 2013-2014 SCC Class Action Decisions, Osgoode Hall Class Action Conference, April 2015

Recours collectifs, droit de la consommation et droit constitutionnel : impacts des arrêts Marcotte c. Banque de Montréal, Marcotte c. Fédération des Caisses Desjardins du Québec et Banque Amex c. Adams de la Cour suprême du Canada, Canadian Bar Association, November, 2014