About Justin Nasseri

Justin Nasseri is an experienced trial and appeal lawyer and a co-founder of Ross Nasseri LLP. He has a significant track record of success in complex commercial, regulatory, and professional liability matters. He is also a go-to litigator for civil or regulatory proceedings where there is a parallel criminal law component. Clients trust Justin’s advice because of his breadth of experience and battle-tested instincts and judgment. He has appeared as counsel before all levels of court in Ontario, numerous arbitral panels, and administrative tribunals including the Financial Services Tribunal, the Health Professions Appeal and Review Board, and the Discipline Committees of several Ontario health colleges.

Justin has been widely recognized for his accomplishments as a lawyer, including being ranked in Chambers and Partners for general commercial litigation, receiving the Lexpert Rising Star – Leading Lawyer Under 40 award, and winning the Emerging Talent Litigator of the Year for Canada from Benchmark Litigation in 2022. He has been ranked as a leading litigator by Lexpert (Consistently Recommended in Corporate Commercial Litigation), Benchmark Litigation (Litigation Star), and Best Lawyers (Corporate and Commercial Litigation and Administrative and Public Law). According to Chambers’ research, Justin has been described as “a client-first type of lawyer and…a great advocate”, and a “dedicated, driven and passionate advocate.” One client remarked that Justin is “smart, capable and a real leader. His client service is a cut above…” Similarly, anonymous peer reviews collected by Benchmark Litigation remarked that Justin is “an exceptional advocate”, a “one in a million type of lawyer,” someone for whom “any client would be lucky to have in their corner”, “a natural advocate with an instinct for identifying and preparing winning arguments, and deep experience in appellate advocacy….”. According to one peer: “In my 14 years of Bay Street practice, his was one of the best advocacy performances I have seen.”

Justin’s wins include resisting an urgent Norwich motion for which he secured substantial indemnity costs in favour of his client, and resisted a leave to appeal motion at the Divisional Court, overturning an unprecedented $9M judgment as a sanction for contempt at the Court of Appeal for Ontario, winning a significant commercial property trial over the sale of a religious institution, resisting the appeal of a jury verdict in a significant medical malpractice case, and successfully representing PEN Canada in a constitutional challenge to an overly broad ‘false statements’ prohibition in Canada’s federal election legislation.

Justin is also widely published on litigation topics including contract law, civil and criminal procedure, and injunctive relief. His publication history includes works in the Annual Review of Civil Litigation, the Alberta Law Review, the Canadian Privacy Law Review, and the Advocates’ Society. Justin is also frequently asked to speak at and write for legal education conferences hosted by the Law Society of Ontario, the Ontario Bar Association, and the Advocates’ Society.

Justin is also a past Chair of the Executive Committee of the Ontario Bar Association’s Civil Litigation section, where he organized legal education programs and was involved in advocating for policy reforms that included increased adoption of technology and removing the need for pregnant counsel to wear robes in court.

Before co-founding Ross Nasseri LLP, Justin trained with the leading litigation firms McCarthy Tétrault and Pape Barristers (now Pape Chaudhury LLP). He graduated with a JD from the University of Toronto, and a B.A. in Economics and Political Science with First Class Honours from the University of Alberta.