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Monique Jilesen listen


Monique* is a seasoned litigator who clients turn to for their toughest commercial disputes. Recognized as one of Canada’s top 50 trial lawyers, she has an enviable record of success at trials, making it clear that she leads§ her clients to a winning case. She is also admired by her peers and judges for her advocacy talents, earning the prestigious Douglas K. Laidlaw Medal for Excellence in Advocacy for 2017. If a complex case needs representation, Monique shows clients the way from start to finish. Monique is also a leader outside of the courtroom. She is an Executive Member of The Advocates' Society Commercial List Practice Group, a past chair of the Gale Cup Moot Committee and regular advocacy instructor for the Advocates’ Society and Osgoode Hall Law School. .



Monique Jilesen (she/her)

is a partner at Lenczner Slaght.

"She is very client-focused, personable and strategic." — Chambers Canada

Monique is litigation counsel in complex proceedings from inception through trial. She focuses on class actions, contract and shareholder disputes, civil fraud cases, injunctions, bankruptcy and insolvency matters, and securities and derivatives cases. Monique’s clients include major financial institutions, pharmaceutical companies, technology companies, and other multinational corporations who routinely face challenging, cross-border disputes. She appears at all levels of Court and in administrative tribunals. Monique has a record of success at trial in bet the company disputes.

Monique is widely recognized as leading counsel. Benchmark Canada has identified her as one of Canada’s top 50 trial lawyers and Lexpert has identified her as one of the leading 500 lawyers in Canada. The Advocates’ Society awarded her the Douglas K. Laidlaw Award for Excellence in Advocacy.

Monique is a member of the Toronto Commercial List Users’ Committee, the former Chair of the Advocates’ Society Commercial List Practice Group and the past chair of the Gale Cup Moot. She is a regular speaker on various topics, including expert evidence, class proceedings, and injunction advocacy. She is a Team Leader in the Intensive Trial Advocacy Program at Osgoode Hall Law School.

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  • The Advocates' Society - Former Chair of the Commercial Litigation Practice Group

  • Canadian Bar Association

  • Ontario Bar Association

  • International Women's Insolvency & Restructuring Confederation

  • Commercial List Users’ Committee - Member

  • Turnaround Management Association

  • Gale Cup Moot Committee - Past Chair

  • Ontario Trial Lawyers Association Moot - Former Coach, Osgoode Hall Law School

  • Osgoode Hall Law School - Former Adjunct Professor

  • Women's White Collar Defense Association

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  • Douglas K. Laidlaw Medal for Excellence in Advocacy (2017)

  • Benchmark Canada (2017-2022)

    Litigation Star – Class Action, Commercial, Insolvency, Securities; Top 50 Women in Litigation (2021), Top 50 Trial Lawyer in Canada (2021)

  • Benchmark Litigation (2017-2019)

    Top 25 Women in Canadian Litigation

  • Best Lawyers in Canada (2016-2022)

    Class Action Litigation, Corporate & Commercial Litigation, Director & Officer Liability, Insolvency & Financial Restructuring, Labour and Employment, Securities

  • Canadian Legal Lexpert® Directory (2014-2022)

    Class Actions, Insolvency & Financial Restructuring, Litigation - Corporate Commercial, Litigation - Directors' & Officers' Liability, Litigation - Securities

  • Chambers Canada (2019-2022)

    Litigation: General Commercial (Ontario)

  • International Academy of Trial Lawyers (2017)


  • Lexpert Guide to the Leading US/Canada Cross-Border Lawyers in Canada (2013-2019)

    Dispute Resolution, Corporate Commercial Litigation, Litigation Lawyer to Watch (2013)

  • Lexpert Rising Stars (2012)

    Leading Lawyers Under 40

  • Lexpert Special Edition: Canada's Leading Litigation Lawyers (2014-2021)

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