- Yale Law School, LL.M. (Fulbright Scholar)
- McGill University, LL.B. and B.C.L.
- University of Toronto, B.A.
Mahmud Jamal’s national litigation practice includes the defence of class actions, banking litigation, constitutional and administrative law, aboriginal litigation, competition/antitrust, pension, tax, copyright and other regulatory litigation. He has argued 35 appeals before the Supreme Court of Canada as counsel to a party or intervener in a wide range of civil, constitutional, criminal, and regulatory areas. He has also argued cases before the courts of Ontario, British Columbia, Alberta, Quebec, New Brunswick, Newfoundland and Labrador, at the Federal Court and Federal Court of Appeal, and before federal and provincial administrative tribunals such as the Competition Tribunal, the Ontario Energy Board, and the Financial Services Tribunal. He has acted in numerous bilingual trials and appeals. He is a former law clerk to the late Mr. Justice Charles D. Gonthier of the Supreme Court of Canada and to Mr. Justice Melvin L. Rothman of the Quebec Court of Appeal.
Mahmud is an elected member of the ﬁrm’s Partnership Board, which oversees the overall strategic direction of the ﬁrm, a member of the boards of directors of the Advocates’ Society, the Canadian Civil Liberties Association, and the Osgoode Society for Canadian Legal History, and a trustee of the Canadian Business Law Journal. He also currently serves as a member of the Government of Ontario’s Anti-Racism Consultation Group.
Numerous industry publications describe Mahmud as being widely regarded by clients and peers as one of Canada’s leading litigators in the areas of class actions defence, competition litigation, commercial litigation, Supreme Court and appellate advocacy, and constitutional and administrative law:
- Chambers Canada (2018): “Mahmud Jamal has a diverse practice with a notable presence in banking litigation and related class action matters. One commentator stated: “I value Mahmud's opinion—he is very bright and understands the intricacies of a file.” “Mahmud Jamal is described by interviewees as a “very smart guy” and “a very well-respected litigation counsel.” He expertly represents clients in a wide variety of matters, including competition disputes, banking and tax litigation, as well as class action defence.” Chambers Canada (2017): “Mahmud Jamal offers significant experience in class action litigation, including before the Supreme Court. One source enthused: “He is certainly regarded as being exceptionally bright. He’s very focused and writes extremely well. He’s on all of the major cases, he takes a leading role in drafting documents and he has a strong presence in court”; “Mahmud Jamal has a broad practice which encompasses regulatory litigation, class action defence and taxation. He also has notable experience handling appellate advocacy and has appeared before the Supreme Court of Canada on numerous occasions. He is described by sources as “a strong lawyer who has a lot to offer.” Chambers Canada (2016): “a great lawyer who is smart, thoughtful and well-written.”
- Chambers Global (2015): “Mahmud Jamal is well regarded for his public law, constitutional law, competition and banking litigation expertise. One source said: “He’s a very, very smart guy. He has that raw intelligence but also the analytical skills and ability to break down tough problems.””
- Benchmark Litigation Canada (2017): “In the class actions space, perhaps no lawyer comes more revered by peers, and, to hear some peers tell it, by judges, than Toronto's Mahmud Jamal. "I have personally witnessed judges express delight when Mahmud's name shows up on a ﬁle," insists one fellow Toronto litigator.” Benchmark Litigation Canada (2015): “a peer and client favorite, as well as, it is observed, a favorite of judges, in the class actions space. “If a brief comes through with Mahmud’s name on it, judges will show a rare level of deference”” and notes that “his ethics and intellectual acumen are unassailable””; Benchmark Litigation Canada (2014): “widely touted for his handling of a variety of commercial litigation matters, focusing primarily on class-action defence work” and ““commands respect from bench and bar alike”, enthuses a peer”; Benchmark Litigation Canada (2013): “a stellar thinker and he is taking Osler’s class- action practice to a national platform”.
- Martindale-Hubbell ranks Mahmud as “AV Preeminent”, its highest rating for professional excellence and ethical standards, and quotes client and peer research describing him as “a top drawer lawyer with a superb Supreme Court of Canada practice” and as “courteous and very professional.”
Over the course of his career, Mahmud has been actively involved in legal education and professional development. Since 2007, he has been co-director of Osgoode Hall Law School’s LL.M. program in Administrative Law, where he teaches a course in Administrative Law Remedies every other year. He has previously served as a lecturer in comparative constitutional law at the Faculty of Law, McGill University, and as a guest instructor in class actions, constitutional law, and civil litigation at the University of Toronto Law School, University of British Columbia Law School, Osgoode Hall Law School, the University of Ottawa Law School (Common Law), and Ryerson University. He is a former instructor for the Ontario Bar Admission Course in Public Law and a current advocacy instructor for the Advocates’ Society.
Mahmud has spoken, written, and published widely in the fields of constitutional law, Aboriginal law, class actions, competition law, the law of solicitor-client privilege, banking law, and the law of civil procedure. His publications have been cited by the Supreme Court of Canada, Federal Court, Alberta Court of Appeal, Saskatchewan Court of Queen’s Bench, Manitoba Court of Appeal, Court of Quebec, Quebec Superior Court, Quebec Court of Appeal, New Brunswick Court of Queen’s Bench, New Brunswick Court of Appeal, and Newfoundland and Labrador Court of Appeal.
Mahmud has served as pro bono counsel in numerous appeals before the Supreme Court of Canada for the Canadian Bar Association, the Canadian Civil Liberties Association, the Federation of Law Societies of Canada, and Kids Help Phone. In 2010 he was awarded a Lexpert Platinum Zenith Award for pro bono work in protecting freedom of religion.