John Mather

DMG Advocates LLP

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www.dmgadvocates.com/lawyers/john-mather

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JMather@dmgadvocates.com

416-238-2265/ 416-908-1698

155 University Avenue, Suite 1230, Toronto, ON M5H 3B7

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@td_canada

@cassels_law

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John’s commercial litigation work focuses on contractual disputes, product liability, class actions, securities and shareholder claims, commercial real estate and leasing matters, franchise and automobile dealer claims, procurement litigation, and media and defamation. John also acts on urgent matters involving fraud, including successfully obtaining Mareva orders and other extraordinary relief. John’s public litigation work focuses on public inquiries, regulatory or government investigations, and defence of regulatory proceedings. From 2022–2023, John served as Commission Counsel to Justice Rouleau of the Ontario Court of Appeal at the public inquiry investigating the federal government’s invocation of the Emergencies Act in response to the Freedom Convoy protests in January/February 2022. From 2019–2022, John acted as Associate Commission Counsel to then-Associate Chief Justice of Ontario Frank Marrocco at the Collingwood Judicial Inquiry, an extensive public investigation into alleged conflicts of interest and other concerns surrounding two major transactions by the Town of Collingwood. John is a member of the Ontario Bar Association’s Civil Litigation Section executive. He also is a member of The Advocates Society’s Mid-Career Advocates’ Standing Committee (MASC).

John Mather is a partner at DMG Advocates practising commercial and public litigation. John is adept on his feet in any setting – his favourite place to be is in court or a hearing room. He regularly appears before the Ontario Superior Court and Court of Appeal. He has acted in numerous domestic and international arbitrations, including in New York and Riyadh, Saudi Arabia. He also represents clients responding to investigations and proceedings before various types of administrative bodies, including the Capital Markets Tribunal (the Ontario Securities Commission) and private sport arbitrations.