Justin Nasseri

Justin Nasseri

Contact Information:

Bar Admission:

Ontario 2013

Justin Nasseri is a founding partner at Ross Nasseri LLP. Clients trust Justin for his counsel because of his breadth of experience and his battle-tested instincts and judgment. He has appeared as counsel before all levels of court in Ontario and tribunals including the Discipline Committee of the College of Physicians and Surgeons of Ontario, and the Health Professions Appeal and Review Board. He has been counsel on numerous trials, appeals, motions, applications, and arbitrations. Justin’s cases have included civil appeals, discipline hearings, and disputes in the fields of corporate-commercial litigation, estates, employment law, medical negligence, and criminal law.

Justin is also widely published on litigation topics including contract law, civil and criminal procedure, and injunctive relief. He has written for publications such as the Annual Review of Civil Litigation, the Advocates’ Quarterly, the Alberta Law Review, and the Canadian Privacy Law Review, as well as for conferences hosted by the Ontario Bar Association, the Law Society of Upper Canada, the Advocates’ Society, and Osgoode Hall.

In addition, Justin is a past Chair of the Executive Committee of the Ontario Bar Association’s Civil Litigation Section, where he helps organize legal education programs and is involved in advocating for policy reforms that benefit members of the bar. Justin has also been invited to speak at and chair programs for the Law Society of Ontario including A Litigator’s Guide to Concurrent Civil, Criminal, and Administrative Proceedings (January 2020) and A Litigator’s Guide to Remote/Virtual Practice (May 2021).

Before co-founding Ross Nasseri LLP, Justin was a partner at Goddard Nasseri LLP. He also litigated at McCarthy Tétrault’s Toronto office and Pape Barristers (now Pape Chaudhury LLP).

Justin received his JD from the University of Toronto in 2012 and his B.A. in Economics and Political Science with First Class Honours from the University of Alberta in 2009. He was called to the Ontario bar in 2013.


Representative Matters

  • Defending a public company in litigation commenced pursuant to the Repair and Storage Liens Act, over a fleet of vehicles
  • Acting for a dissenting shareholder in an application to determine the fair market value of shares in a going private transaction
  • Acting for co-trustees of an estate, including a major bank, to resist an adverse possession claim
  • Defending an institution against vicarious liability and negligence claims arising from historical sexual assault allegations
  • Acting for the ETDL in a multi-million dollar estate dispute
  • Advising the Ontario Public Guardian and Trustee on litigation strategy in a breach of contract action
  • Acting for the plaintiff in a complex, multi-defendant proceeding arising from a fraudulent real estate scheme
  • Acting for the respondents in a proceeding arising from a multi-property joint venture
  • Acting for the plaintiff in an action for conspiracy and intrusion upon seclusion by several defendants including police officers
  • Defending a mortgage administrator in regulatory proceedings at the Financial Services Tribunal, arising from a syndicated mortgage
  • Defending a significant propane distribution company in an action for wrongful termination and malicious prosecution and prosecuting a counterclaim for conversion
  • Defending a well-known retail company and its directors in an oppression proceeding
  • Acting for a well-known hotel in a breach of contract and unjust enrichment action against a contractor
  • Acting for numerous naturopaths in proceedings governed by the Regulated Health Professions Act
  • Acting for a well-known hospitality website to defend an action for defamation
  • Acting for a physician in an oppression case arising from a cosmetic clinic
  • Acting as agent and counsel to a provincial government in a public-interest proceeding in Ontario

Recent Decisions

  • Thrive Capital Management Ltd. v. Noble 1324, 2021 ONCA 722; retained as appellate counsel; successful in overturning a decision from the Commercial List to grant final judgment of $9M as a sanction for contempt of court
  • Mansteel v. Katebian et al., 2021 ONSC 5273; successfully obtained security for costs on a pay-as-you-go basis against a corporate plaintiff in a multi-million dollar action alleging fraud and conspiracy
  • Canadian Constitution Foundation v. Canada (Attorney General), 2021 ONSC 1224; successfully acted for intervener in a constitutional challenge to amendments to the Canada Elections Act on the basis of unfair infringements on free speech rights
  • Stubbs v. College of Psychologists of Ontario, 2021 CanLII 37 (HPARB); acted for applicant in a review concerning registration guidelines at the College of Psychologists of Ontario
  • Marsh v. Electronica AI Inc., [2019] O.J. No. 6281 and [2019] O.J. No. 6282; successfully obtained one of the first-known preservation orders for cryptocurrency under Rules 44/45
  • R. v. T.G., 2019 ONCJ 665; counsel in a complex, multi-week criminal trial involving allegations of sexual assault by a teacher
  • Howell-Wignall v. Casey’s Propane Inc.; successfully obtained security for costs and a litigation timetable for a defendant/plaintiff-by-counterclaim, and had plaintiff’s motion for a stay of civil proceeding pending a criminal proceeding dismissed
  • Rubner v. Bistricer, 2018 ONSC 1934; Counsel for Litigation Guardian in a complex dispute concerning constitution of a bare trust, validity of various gifts and a will, and ownership of interest in a real estate joint venture. The Court accepted most of the Litigation Guardian’s positions and ordered accordingly
  • St. James No. 1 Inc. v. VanderWindt, 2018 ONCA 44; appeal involving the validity of service on a corporation pursuant to the Ontario Heritage Act
  • Sandhu v. Sikh Lehar International Organization, 2017 ONSC 5680 and 2017 ONSC 7165; successfully tried an action on behalf of the Plaintiffs to recover almost $2M arising from a failed transaction for the purchase and sale of a large property in Brampton
  • Berg v. Canadian Hockey League, 2017 ONSC 5382; appearing as counsel for the Law Foundation of Ontario on a costs hearing arising from a certification motion
  • Chaudhry v. A&B Auto Leasing and Car Rental Inc. et al.; successfully brought a motion for summary judgment to have an action dismissed as against A&B on the basis that the Plaintiff had no valid contract with the corporate entity
  • Surujedo v. Melady, 2017 ONCA 41; successfully resisted the appeal of two defendant physicians who were found liable for negligence at a jury trial
  • Best v. Ranking, 2016 ONCA 492; counsel on an appeal regarding the threshold of conduct for a personal costs award against a lawyer
  • Tam v. Cheng; successfully moved to enforce a settlement and obtained costs on a substantial indemnity basis for costs thrown away
  • Private Arbitration; successfully represented a leading IT company that was awarded $27M in an arbitration for breach of contract
  • König v. Hobza, 2014 ONCA 691; successfully reduced damages award in the appeal of an oppression case

Selected Publications

  • Rule 15 – Representation by Lawyer in  Noel Semple (Ed.), Civil Procedure and Practice in Ontario (Canadian Legal Information Institute , 2021) (co-authored with Gordon Vance)
  • “Pulling the Chute: Motions to Get Off the Record Pursuant to Rule 15.04”, Law Society of Upper Canada: A Litigator’s Guide to the Challenging Lawyer-Client Relationship (with Shantona Chaudhry)
  • “More Deference, More Problems: The Standard of Appellate Review”, Ontario Bar Association – Your First Civil Appeal, October 17, 2016 (with Shantona Chaudhry)
  • “Economic Duress after Bhasin v. Hyrnew: Does the Organizing Principle of Good Faith Offer a New Framework?” in Todd L. Archibald and Randall Scott Echlin, eds., Annual Review of Civil Litigation, 2016 (Toronto: Thomson Carswell, 2016) (with Brandon Kain)
  • “When Worlds Collide: A Look At Key Issues When Simultaneously Litigating Civil and Criminal Proceedings”, For the Defence (Vol. 37, No. 1)
  • “Summary Judgment Motions: Where Are We Now? (An Appellate Perspective)” The Advocates’ Society Summary Judgment Motions conference, May 27, 2016 (with Tanya A. Pagliaroli)
  • “Honour Among Businesspeople: the Duty of Good Faith and Contracts in the Energy Sector”, (2015) 53 Alta. L. Rev. 349 (with Neil Finkelstein, Brandon Kain, and Craig Spurn) (Reproduced with permission of Alberta Law Review)
  • “The Art of Juggling: Defending Concurrent Criminal, Civil, and Professional Discipline Proceedings” (2014) 43 Adv. Q. (with Christopher A. Wayland)
  • “The Digital and Internet Age Meets the Law of Search and Seizure” as the S.C.C. Clarifies the Law on Search Warrants and Computers in R. v. Vu, (2014) Canadian Privacy Law Review, Vol. 11, No. 3
  • “What are the Implications of the Digital Age Meeting the Law of Search and Seizure? A Comment on R. v. Vu”, Ontario Bar Association’s Institute 2014 – Criminal Justice – Litigating a Smarter Charter, February 8, 2014

Awards & Rankings

  • Recognized in The Globe and Mail’s Canada’s Best Law Firms list for Dispute Resolution (Litigation, Arbitration & Investigations) (2022)
  • Finalist, Lexpert Rising Stars 2021: Leading Lawyers Under 40 category, 2022
  • The Best Lawyers in Canada: Ones to Watch (2022 Edition), Corporate and Commercial Litigation
  • Top Lawyers (Litigation), Post City Magazines, 2021
  • Listed in the Lexpert directory for Litigation-Corporate Commercial and listed as a Leading Lawyer to Watch


In the Media

Justin Nasseri

Contact Information:

Bar Admission:

Ontario 2013

News, accolades & recognition

Justin Nasseri on Court Backlogs in The Lawyer’s Daily

Ross Nasseri LLP’s Justin Nasseri was recently quoted in The Lawyer’s Daily for an article on court backlogs. The article suggests that the backlogs have slowed the rate of cases being heard in the Ontario court system.