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Eli S. Lederman listen

About

Eli* has a proven track record of success, because he fights for his client relentlessly. Recognized by Lexpert as a “Leading Lawyer Under 40”, Eli has§ extensive trial and appellate experience, having appeared in some of the leading contract and professional liability cases, including at the Supreme Court of Canada. Eli achieves success for his clients using his sound judgment and business acumen. As his client, Eli has your back at all times, simplifying complex issues into layman’s terms and finding practical solutions to complicated legal problems. And when a resolution isn’t possible, Eli is a formidable presence in court, respected by both judges and his opponents for his skilled, professional advocacy. .

Expertise

Details

Eli S. Lederman

is a partner at Lenczner Slaght.

Eli's practice covers a broad range of complex commercial litigation matters, including securities law, class actions, commercial contracts, franchise disputes, oppression and other shareholder litigation. He regularly acts for directors and officers of private and public corporations and advises boards and their committees on governance and litigation matters.

Eli has extensive trial experience in commercial litigation and in medical malpractice actions, and also acts as counsel in commercial arbitrations. He has appeared as lead counsel at all levels of court including the Supreme Court of Canada, the Court of Appeal for Ontario, the Court of Appeal for Alberta and the Ontario Superior Court of Justice.

Eli represents clients in a wide range of sectors, including those in financial services, information technology, real estate, franchising and manufacturing. Eli is a frequent speaker in continuing legal education programs particularly on issues relating to contractual disputes, securities law and trial advocacy.

Eli is also a member of the firm's Management Committee.

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  • Canadian Bar Association

  • The Advocates' Society

  • Ontario Bar Association

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  • Benchmark Canada (2013-2024)

    Litigation Star – Class Action, Commercial, Securities

  • Best Lawyers in Canada (2014-2025)

    Administrative & Public Law, Corporate & Commercial Litigation, Director and Officer Liability Practice, Franchise Law (2022), Health Care Law, Medical Negligence, Real Estate Law

  • Canadian Legal Lexpert® Directory (2013-2024)

    Litigation - Corporate Commercial, Medical Negligence, Professional Liability, Litigation - Directors' & Officers' Liability, Litigation - Regulatory & Public Law (2021), Litigation - Securities (2023)

  • Chambers Canada (2025)

    Litigation: General Commercial (Ontario)

  • Lexpert Guide to the Leading US/Canada Cross-border Litigation Lawyers in Canada (2015-2017)

    Corporate Commercial Litigation, Litigation Lawyer to Watch (2015)

  • Lexpert Rising Stars (2014)

    Leading Lawyers Under 40

  • Lexpert Special Edition: Canada's Leading Litigation Lawyers (2017-2023)

  • Lexpert®/American Lawyer Guide to the Leading 500 Lawyers in Canada (2020-2021, 2024)

    Corporate Commercial Litigation

  • The Legal 500 Canada (2021-2024)

    Dispute Resolution (Recommended Lawyer)

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