Josy-Ann Therrien

Josy-Ann is a versatile litigator who advises and represents clients from various sectors and businesses in complex civil and commercial disputes, investigations, and regulatory enforcement matters.  She has extensive experience in contractual disputes, civil liability, environmental law, class actions, privacy law, securities law and construction law.

Josy-Ann is also a member of Osler’s Regulatory, Indigenous and Environmental group, and provides regulatory and environmental advice relating to regulatory investigation and orders, environmental assessments, permits and approvals, and regulatory compliance. She also assists clients through the environmental aspects of commercial and real estate transactions.

Josy-Ann leverages her dual law degree and master in business administration to provide strategic and practical solutions for her clients.  She has successfully defended clients before the Québec courts and administrative tribunals. During her studies, Josy-Ann served as a law clerk at the Superior Court of Montréal and completed an internship in Paris within an international management consulting firm


Representative Work

  • Béton Provincial

    Béton Provincial in its acquisition of CRH Canada Group Inc.

  • WT Microelectronics

    WT Microelectronics in its acquisition of Future Electronics for USD$3.8 billion

  • General Motors

    General Motors in its US$150 million equity investment in Nouveau Monde Graphite

  • Veolia Health Operating Services

    Veolia Health Operating Services in the design-build defect claims against the constructors of the new Centre Hospitalier de l’Université de Montréal

    • iCON Infrastructure in its investment in QSL, in connection with environmental and regulatory matters
    • Snapcommerce Inc. in connection with the settlement of a class action for damages relating to the cancellation of online bookings
    • Trans Union of Canada Inc., in connection with requests for rectification of personal information made to the Commission d’accès à l’information, and with various proceedings before the Québec courts
    • Loop Industries Inc., in an application for authorization to institute a securities class action for misrepresentation following a short seller report. The application was dismissed by the Superior Court
    • TD Waterhouse Canada Inc., in an application for authorization to institute a class action for damages relating to trading restrictions imposed on TD’s direct brokerage platform. The application was dismissed by the Superior Court
    • Teva Canada Ltd. in connection with a dispute with a Québec governmental entity relating to an access to information request
    • A multinational manufacturer in connection with a land transaction in Québec involving environmental and regulatory matters
    • An international oil service company in connection with ongoing remediation work relating to contaminated soil and groundwater

    Latest Insights

    • Blog Jan 22, 2024

      Law 25: a new enforcement scheme for protection of personal information in the private sector in Québec

      On September 22, 2023, the majority of the amendments to the Québec privacy legislation introduced in the Act to modernize legislative...

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      Law 25: a new enforcement scheme for protection of personal information in the private sector in Québec
    • Osler Update Jan 16, 2024

      Law 25: a new enforcement scheme for protection of personal information in the private sector in Québec

      Last fall, several significant amendments to Québec’s privacy legislation, Law 25, came into force. What do organizations need to consider when...

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      Law 25: a new enforcement scheme for protection of personal information in the private sector in Québec
    • Blog Nov 22, 2023

      Widening the lanes? Supreme Court of Canada weighs in on the territorial reach of Québec’s securities regulatory tribunal

      On November 17, the Supreme Court of Canada directly addressed for the first time the question of whether provincial administrative tribunals have...

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      Widening the lanes? Supreme Court of Canada weighs in on the territorial reach of Québec’s securities regulatory tribunal
    • Osler Update Oct 20, 2022

      The Superior Court of Québec denies certification of a proposed worldwide securities class action

      Osler lawyers review a Québec court decision in which a proposed securities class action was solely based on a short seller report.

      Read more
      The Superior Court of Québec denies certification of a proposed worldwide securities class action
    View all Insights

    Community Involvement

    • Acted in a Pro Bono case before the Superior Court of Québec and the Québec Court of Appeal for a non-profit organization in the Montréal community in the context of municipal litigation
    • Volunteer in the management of Opération Père Noël (OPN) for the Greater Montréal area

    Speaking and Writing

    Published Work

    • Canadian Securities Law News, Widening the lanes? Supreme Court of Canada weighs in on the territorial reach of Québec’s securities regulatory tribunal, LexisNexis, Number 360, January 2024
    • Colloque national sur l’action collective – Développements récents au Québec, au Canada et aux États-Unis (2020), La crise de la quarantaine de la procedure d’autorisation, Barreau du Québec, Service de la formation continue, vol. 480, Montréal, Éditions Yvon Blais, 2020

    Credentials

    Education

    • University of Sherbrooke, LL.B.
    • University of Sherbrooke, M.B.A.

    Languages

    • English
    • French

    Professional Affiliations

    • Barreau du Québec
    • Young Bar of Montréal
    • The Advocates’ Society
    • Women’s White Collar Defense Association
    • The Canadian Bar Association, member of the National Energy, Environment and Resource Law Section (NEERLS)