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Associate

Mannu Chowdhury

Mannu is a versatile and creative litigator. His practice encompasses high-stakes commercial, constitutional, administrative, and appellate disputes.

In his administrative and constitutional law practice, Mannu acts for individuals, businesses, not-for-profit organizations, and public sector institutions (including tribunals) in applications for judicial review and appeals in many areas. Some such matters include workplace safety, school boards and universities, professional regulation, voluntary associations, retailer disputes, COVID-19 benefit programs, elections, labour arbitrations, and municipal disputes involving Integrity Commissioners. Mannu also represents clients before tribunals, including appearing as presenting counsel before the Ontario Judicial Council and the Justices of the Peace Review Council. He advises clients on constitutional compliance issues and on the prospect of challenging a law on constitutional grounds. Mannu has published extensively on administrative and constitutional law and his work in this area has been cited by the Ontario Court of Appeal.

In his commercial law practice, Mannu acts in shareholder disputes, oppression cases, and contract claims. He has particular expertise in complex arbitrations and urgent injunctive proceedings. Mannu also maintains an interest in the legal impact of AI on businesses. He advises clients on these issues, in part, by drawing on his insights as part of serving on the Federal Courts’ AI Committee and having presented to judges on the same.

Mannu has argued before all levels of court in Ontario as well as before the Federal Court and the Supreme Court of Canada.

Mannu maintains an active pro bono practice and firmly believes in the power of the law in contributing to a more inclusive society. He has represented civil liberties associations and various legal clinics in matters of public interest before appellate courts.

Mannu is committed to legal education. He currently teaches first year constitutional law at the Lincoln Alexander School of Law and an upper year course on constitutional litigation at Osgoode Hall Law School. Mannu also co-coaches the Lincoln Alexander School of Law’s Jessup International Law moot team.

Prior to joining Paliare Roland, Mannu was an associate at a national law firm and clerked at the Federal Court.

Education

  • University of Toronto, Faculty of Law, J.D., 2017
  • University of OXford, M. Sc., 2013
  • University of Toronto, B.A., 2011

Bar Admissions

  • Ontario, 2018

Awards and Honours

  • Best Lawyers: Ones to Watch in Canada 2025- Administrative and Public Law

Representative Work

  • Auer v Auer and TransAlta Generation Partnership, et al v Canada, et al: argued before the Supreme Court of Canada on behalf of the HIV & AIDS Legal Clinic of Ontario and the Health Justice Program concerning the need for meaningful review of the legality of regulations (decision under reserve)

     

    Alford v Canada (Attorney General): counsel for the British Columbia Civil Liberties Association before the Ontario Court of Appeal on interpreting the scope of parliamentary privilege (2024 ONCA 306)

     

    R v Campbell: argued before the Supreme Court of Canada on behalf of the National Council of Canadian Muslims concerning constitutional protections accorded to digital communications, including text messages (decision under reserve)

     

    Jacob v Canada (Attorney General): counsel for the Income Security Advocacy Centre before the Ontario Court of Appeal on the scope of section 15 equality protection accorded to “facially neutral” COVID-19 income benefits programs (leave decision: 2024 ONCA 195)

     

    Law Society of Ontario v Metrolinx: counsel for the Law Society of Ontario before the Ontario Superior Court on an urgent injunctive proceeding concerning the removal of trees in the historic Osgoode Hall grounds (2023 ONSC 1169)

     

    NWG Investments Inc v Fronteer Gold Inc: counsel for a corporate entity before the Ontario Court of Appeal in a commercial mining dispute (2024 ONCA 331)

     

    Judicial review applications related to workplace compensation regimes: counsel for the Workplace Safety & Insurance Appeals Tribunal on varied applications for judicial review before the Ontario Divisional Court (2023 ONSC 3875; 2024 ONSC 2365)

     

    Ethiopian Orthodox Tewahedo Church of Canada St. Mary Cathedral v. Aga: argued before the Supreme Court of Canada on behalf of the National Council of Canadian Muslims concerning the scope of judicial intervention regarding internal disputes of voluntary associations (2021 SCC 22).

  • Sherman Estate v. Donovan: counsel for the Income Security Advocacy Centre before the Supreme Court of Canada on the applicability of sealing orders (2021 SCC 25).

  • Ward v. Quebec (Commission des droits de la personne et des droits de la jeunesse): counsel for the Canadian Civil Liberties Association before the Supreme Court of Canada on section 2(b) Charter issues related to discriminatory speech (2021 SCC 43).

  • Law Society of Saskatchewan v. Peter V. Abrametz: counsel for the Federation of Law Societies of Canada before the Supreme Court of Canada on the appropriate approach to assessing administrative delay (2022 SCC 29).

  • United Food and Commercial Workers International Union v. Aurora Cannabis Enterprises Inc: argued before the Divisional Court on behalf of a coalition of education sector interveners pertaining to freedom of association (2021 ONSC 5611).

  • Canadian Federation of Students v. Ontario (Colleges and Universities): counsel for the University of Toronto Graduate Students’ Union before the Divisional Court and the Ontario Court of Appeal on whether the “Student Choice Initiative” was implemented beyond the Minister’s delegated authority (2021 ONCA 553).

  • Aggarwal v. Sheridan College: argued before the Divisional Court on behalf of Sheridan College on an application for judicial review of Human Rights Tribunal’s decision (2021 ONSC 1399).

  • Rebel News Network Ltd v. Canada (Leaders’ Debates Commission): counsel for the Leaders’ Debates Commission before the Federal Court on media accreditation issues pertaining to the federal leaders’ debates during national elections (2020 FC 1181).

  • The Honourable Thomas A. Cromwell’s Independent Review re: York University (2020): counsel to Justice Cromwell’s review on free speech and security issues at York University (independent review).

Publications

  • Co-author – “Peer Review and Adjudicative Independence: Finding the Right Balance in Administrative Justice” (2021) 34:1 Canadian Journal of Administrative Law and Practice 55 (with Chris Bredt)

  • “Immigration Detention and Habeas Corpus: Positive Developments and Missed Opportunities in Chhina” (2020) 10:1 Western Journal of Legal Studies

  • Co-author – “Bad Ad(Vice): On the Supreme Court’s Approach to Press Freedom, Source Protection and State Interests in R v Vice Media Canada Inc”(2020) 94:2 Supreme Court Law Review (with Justin Safayeni)

  • “A Wall Between the ‘Public’ and the ‘Private’: A Comment on Highwood Congregation of Jehovah’s Witnesses (Judicial Committee) v Wall”(2019) 9:2 Western Journal of Legal Studies

  • Co-author – “With a Little Help from Too Many Friends? Lessons from TWU and Comeau on Intervening before the Supreme Court” (2019) 90:2 Supreme Court Law Review (with Chris Bredt and Ewa Krajewska)

Presentations

  • Presenter — Key Legal Developments in Crown Liability Law — Osgoode’s Annual Crown Liability Conference — April 24, 2024

     

    Presenter — Understanding the Substantive Legal Framework regarding Judicial Review — Ontario Bar Association — April 3, 2023 (with Prof. Paul Daly)

     

    Presenter – On Peer Review and Adjudicative Independence – Osgoode’s Annual National Forum on Administrative Law and Practice – October 7, 2020 (with Chris Bredt)

  • Presenter – Virtue and Vice in Canada’s Approach to Press Freedom – Osgoode Constitutional Cases Conference – April 5, 2019 (presented with Justin Safayeni)