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Member of the Quebec Bar since 2002

Languages: French, English

Partner at Woods, Marie-Louise Delisle has over 15 years of experience dealing with high-end commercial litigation matters in addition to handling matters relating to injunctions. She is involved in several major arbitration proceedings as well as commercial and civil litigation cases, particularly in matters relating to securities, public-private partnerships and professional liability. Marie-Louise also has significant and varied experience in defending against class action proceedings involving civil liability, telecommunications law, competition law and the manipulation of financial instruments. She has pleaded before the first instance and appeal tribunals of the province of Quebec. 

Marie-Louise is also known for her various contributions to several publications in arbitration and numerous topics related to commercial litigation. She teaches a Commercial Litigation Workshop and Trial Advocacy Course at the Université de Montréal and sits on a variety of professional association committees. Marie-Louise is highly regarded by her peers and clients, and appears in numerous reputable legal publications, including The Canadian Legal Lexpert Directory, Benchmark Litigation and The Best Lawyers in Canada.

Recent distinctions 






Commercial Arbitration

Representation of a major firm of professionals in the context of an arbitration between a partner and the firm.

Representation of a major propert manager in the context of an arbitration on operating costs.

Representation of a major omputer software  integrator in the context of an arbitration pertaining  to a major contract for the development and integration of an “ERP” software.


Successfully challenged a request securing the dismissal of a motion for a provisional interlocutory injunction against an ex-employee, and the company for which he works, in IMS Health  Canada inc. v.Th!nk Business Insights Ltd. v. Mark Maciw, 2013 QCCS 16.

Successfully challenged implementing rules of an Anton Piller injunction order and seizure of pirated material; IMS Health Canada inc. v. Th!nk Business Insights Ltd. and Mark Maciw, 2013 QCCA 688.

Representation of various clients seeking orders forcing former employees to meet their obligations of loyalty and non-competition.

Professional Liability

Representation of Chrysler Canada Inc. and CIBC Mellon Trust Company in the context of a $165 million lawsuit against the Castor Holdings auditors.

Obtained several judgments dismissing professional liability suits against accountants and trustees in bankruptcy, in:

Gestion Michel Noël ltée v. Dallaire, Forest, Kirouac, 2011 QCCS 1293 and 2011 QCCS 809;

Finexcorp inc. v. Caroline Tremblay, CA  inc., 2010 QCCA 595;

X Merchant inc. v. Ginsberg, Gingras & Associés inc., 2009 QCCS 2042.

Representation of investors against a major financial institution for misconduct in the management of their assets.

Class Actions

Participated in securing a class action judgment against a semi-public agency acting as a pension manager to pay considerable damages to several  pensioners following the dissemination of      misleading information, in Myette v. Commission  administrative des régimes de retraite et d’assurances, 2010 QCCS 2797.

Representation of a major company engaged in mutual funds in the context of a class action involving "Market Timing" transactions.

Representation of a major homeopathic product  manufacturer in defense of a class action.


Marie-Louise is ranked highly by her peers and her clients in the most reputable legal publications including the following:

Recognized by Benchmark Litigation as one of the Top 100 Women in Litigation in Canada in 2022.

Recognized by The Legal 500 as Next-Generation Partner in Dispute Resolution, (since 2022).

Repeatedly recommended in the category of Professional Liability since 2018 by The Canadian Legal Lexpert® Directory.  

Recognised as a Litigation Star, since 2017 by Benchmark Litigation Canada.

Recognised as a Future Star in the 2016 Benchmark Litigation publication.

Listed as a Litigation Lawyer to Watch in the  2016 Lexpert® Guide to the Leading US/Canada Cross-Border Litigation Lawyers.

Recognised in The Best Lawyers in Canada since 2016, as a leading practitioner in the fields of Corporate and Commercial Litigation.

Recognised as one of the 8 "incontournables du droit en 2015," by the Premières en Affaires Magazine - June/July Edition.




2001        McGill University, Institute of Comparative Law
                 Master’s Degree LL.M., Intellectual Property and Copyrights

1999        Université de Montréal, Faculty of Law
                 Bachelor of Laws (LL.B.).


Professional activities 

Co-lecturer of Techniques de plaidoirie en litige civil at l'Université de Montréal, Faculty of Law
Quebec Bar – Firm representative within Justicia, a special Quebec Bar initiative which encourages the retention and advancement of women in the profession (2013-2015)
Canadian Bar Association (Québec) – Class Actions Section (2015-2016)
Montreal Bar  Lawyers' Ethics and Image Committee (2013-2015)
Canadian Bar Association (Quebec) – Research and Knowledge Management Section (2010-2013)
Montreal Bar – CAIJ Liaison Committee (2011-2013)



Quebec Bar
Canadian Bar Association
Canadian Club of Montreal
Réseau des femmes d'Affaires du Québec
The Advocates' Society


LexisNexis LégisPratique, James A. Woods, the Honourable Joseph R. Nuss and Marie-Louise Delisle, Q.C., Code de procédure civile annoté – Arbitration Section, Editions 2008 to 2016.

"Dispute Resolution," James A. Woods, Christopher Richter and Marie-Louise Delisle, in Getting the Deal Through – Canada-Quebec Section, Editions 2009 to 2016.

Case comment on Instrubel, n.v. c. Ministry of Industry of the Republic of Iraq, Marie-Louise Delisle, Saisie avant jugement par saisie-arrêt : aucune compétence de la Cour sur les biens situés hors du Québec, in Repères, EYB2016REP1962, June 2016.

Privilège fondé sur les circonstances de chaque cas dans Claude Marseille, dir, Les objections à la preuve en droit civil, Montreal, LexisNexis, 2015, 195.

Identité d’un indicateur de police ou d’un dénonciateur dans Claude Marseille, dir, Les objections à la preuve en droit civil, Montreal, LexisNexis, 2015, 173.

Divulgation prohibée par une disposition législative spécifique dans Claude Marseille, dir, Les objections à la preuve en droit civil, Montreal, LexisNexis, 2015, 187.

Secret conjugal dans Claude Marseille, dir, Les objections à la preuve en droit civil, Montreal, LexisNexis, 2015, 179.

LexisNexis LégisPratique, Marie-Louise Delisle and Stephen L. Drymer, Guide de l’arbitrage – Arbitration in Quebec, 2014.

Case Comment on Autorité des marchés financiers v. Fournier, Marie-Louise Delisle,
L’avocat qui s’objecte constamment aux questions de l’enquêteur dans le cadre d’une enquête de l’AMF expose son client à un constat d’infraction en vertu de l’article 195.4 de la Loi sur les valeurs mobilières, in La Référence, EYB 2012-208199 (C.A.), November 2012.

Case Comment on Facebook Inc. v. Guerbuez, Marie-Louise Delisle, S.C., September 28, 2010, La condamnation à des dommages qui apparaissent exagérés et de nature punitive n’est pas un motif pour refuser la reconnaissance et l’exécution d’un jugement étranger, in Repères, EYB2011 REP (EYB2010-179965), January 2011.

Case Comment on Interinvest (Bermuda) Ltd. v. Herzog, Marie-Louise Delisle, La Cour d’appel confirme de nouveau l’interprétation libérale des facteurs de rattachement en droit international privé québécois, in Repères, EYB2009 REP 882, November 2009.