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Zachary Rosen listen


Zach* is an associate at Lenczner Slaght. He is a tenacious advocate whose approach to litigation is informed by his previous experience in-house and in politics. Zach speaks§ both English and French, and he is trained in both common law and civil law, allowing him to assist his clients with issues that arise across Canada. As your lawyer, Zach will provide advice to you and advocate on your behalf in your language , ensuring not only that you have a firm grasp on all of the issues, whether legal, commercial or strategic, but also that decisionmakers and opposing parties clearly understand your positions and interests in any dispute or negotiation. .



Zachary Rosen (he/him)

is an associate at Lenczner Slaght.

Zach’s litigation practice is focused on complex corporate-commercial disputes and public and administrative litigation. He also has experience representing government institutions and private entities in procurement matters and advising clients on intellectual property issues.

Zach’s clients come from a wide range of backgrounds and industries, from individual entrepreneurs to public companies, and government institutions to non-profit human rights organizations. Zach has appeared as counsel at all levels of court in Ontario, before the Federal Court of Appeal, as well as before a number of administrative tribunals, such as the Human Rights Tribunal of Ontario and the Canadian International Trade Tribunal.

Prior to joining the firm, Zach worked at a litigation firm in Montreal, where he assisted with general civil, commercial, and intellectual property files. He has also previously worked as an assistant to a Member of Parliament in the House of Commons as well as a research assistant in the legal department of one of Canada’s largest e-commerce companies.

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  • The Advocates' Society

  • Ontario Bar Association

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