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Simon Seida

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  • Defended corporations in dozens of consumer and competition-related class actions

  • Represented the mutual insurer of the large accounting firms in civil proceedings related to the longest-running judicial saga in Canada

  • Advised corporations during the course of investigations by government authorities, including during the execution of search warrants

  • Conducted internal investigations on behalf of public companies

  • Defended the executive of a public company in a securities class action

  • Represented a mining company in the context of one of the most important environmental investigations in Canada

  • Defended health-care, financial and legal professionals and their firms in malpractice claims

  • Represented financial institutions in the context of regulatory investigations and enforcement proceedings

  • Represented corporations in cases of alleged fraud, including cases involving provisional injunctions and seizures before judgment

  • Defended electronics manufacturers and distributors in product liability claims

  • Represented purchasers and sellers in the context of pre-closing and post-closing disputes

  • Designated as independent compliance monitor in Canada's first remediation agreement in a monitorship of SNC-Lavalin
Awards & Recognition

Simon is recognized as a leading lawyer by the following publications:

  • The Best Lawyers in Canada 2024 (Class Action Litigation)

  • Benchmark Canada: The Definitive Guide to Canada's Leading Litigation Firms and Attorneys – 2021–2023 (Future Star)

  • Benchmark Canada’s 40 & Under List – 2022–2023

  • The Canadian Legal Lexpert Directory (2023: Class Actions, Litigation – Product Liability; 2021: Repeatedly Recommended – Class Actions)

  • The Legal 500 Canada 2023 (Dispute Resolution: Quebec)

  • Chambers Canada: Canada’s Leading Lawyers for Business – 2020–2023 (Litigation General Commercial – Quebec)

  • The Best Lawyers in Canada 2022 (Class Action Litigation)

Professional Activities

Simon is a member of the New York State Bar, the Montreal Bar, the American Bar Association and the Young Bar Association of Montreal. He is also a member of the Quebec-Japan Business Forum.

At Blakes, Simon is a member of the Diversity & Inclusion Committee.

Professional Appearances
  • Moderator: ESG : Soupe à l’alphabet ou outil de lutte contre la corruption?
    Transparency International Canada, May 11, 2023.
  • Speaker: Ce que vous devez savoir sur l'article 224 C) L.P.C., la pratique du "drip pricing" et les récents développements en la matière
    Canadian Bar Association, Quebec Division, May 3, 2023.
  • Speaker: L’avis de préservation de la preuve au Québec
    Forum juridique de l’ACC Québec, November 15, 2022.
  • Speaker: New Developments in Securities Litigation
    Blakes Business Class Webinar, September 15, 2022.
  • Speaker: Privacy Class Actions in Canada: Recent Trends
    Blakes Business Class Webinar, September 13, 2022.
  • Speaker: Competition Class Actions in Canada: Recent Trends
    Blakes Business Class Webinar, March 2, 2022.
  • Moderator: Case Management of Multijurisdictional Class Actions
    Class Actions Bench and Bar Series, Ontario Bar Association, Webinar, November 9, 2021.
  • Moderator: Class actions and the web giants - privacy, consent and damages
    National Conference on Class Actions, Montreal, Québec, October 21, 2021.
  • Speaker: Securities Litigation Update: Trends and Challenges in the Age of COVID-19
    Blakes Business Class Webinar, May 12, 2021.
  • Guest Speaker: Course: Economic Crimes
    University of Montreal, Montreal, Québec, November 30, 2020.
  • Speaker: Reimagining Investigations in Pandemic Times
    Blakes Business Class Webinar, November 18, 2020.
  • Speaker: Competition Class Actions
    National Conference on Class Actions, Palais des congrès, Montréal, Quebec, October 22-23, 2020.
Media Activities

Admitted to the Quebec Bar – 2010
Admitted to the New York State Bar – 2009
BCL/LLB (With Great Distinction), McGill University – 2008

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