Justin H. Nasseri: Lawyer with McCarthy Tétrault LLP

Justin H. Nasseri

Toronto,  ON  Canada

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Experience & Credentials

Practice Areas

  • Corporate Commercial Litigation
  • Professional Liability
  • Litigation
Mailing AddressSuite 5300, TD Bank Tower, Toronto Dominion Centre, Toronto, ON, M5K 1E6
University University of Alberta, B.A., Economics/Political Science, 2009
Law SchoolUniversity of Toronto, J.D., 2012
Admitted2013, Ontario
Memberships Ontario Bar Association; Law Society of Upper Canada; Canadian Bar Association.


Justin Nasseri is an associate in McCarthy Tetrault LLP's Litigation Group in Toronto. He maintains a general litigation practice which includes medical malpractice, criminal defence, and corporate/commercial matters. He has appeared as counsel before all levels of court in Ontario, including the Ontario Court of Appeal, as well as several tribunals including the Health Professions Appeal and Review Board and the College of Physicians and Surgeons of Ontario.

Mr. Nasseri acts for clients on a variety of issues including complex contractual disputes, and medical malpractice allegations in civil, disciplinary, and criminal contexts. He has provided legal opinions to physicians, accountants, and engineers, as well as to corporations and unincorporated associations. He has also written and presented on a variety of litigation topics including privacy issues, criminal procedure, and injunctive relief. Mr. Nasseri regularly defends clients pro bono in criminal matters referred to McCarthy Tetrault by Downtown Legal Services, where he served as Director of Public Legal Education during 2011.

Mr. Nasseri received his J.D. from the University of Toronto in 2012, where he served as Vice-President Academic, and was awarded the John Atkinson Prize for academic achievement in litigation related courses, the Gordon Cressy Award for outstanding service to the law school, and the Nathan Strauss Q.C. essay prize in legal ethics. In 2011, Mr. Nasseri and his teammate won the National Client Counselling Competition, and they were semi-finalists at the International Client Consultation Competition in the Netherlands. Mr. Nasseri was also a member of the second place team at the 2012 national Gale Cup Moot, in which he made submissions before the Honourable Justice Thomas Cromwell of the Supreme Court of Canada.

Mr. Nasseri received his B.A. in Economics and Political Science with First Class Honors from the University of Alberta in 2009.

Mr. Nasseri was called to the Ontario Bar in 2013. He is a member of the Law Society of Upper Canada, the Canadian Bar Association, the Ontario Bar Association, and the Advocates' Society.


•The Art of Juggling: Defending Concurrent Criminal, Civil, and Professional Discipline Proceedings, co-written with Christopher A. Wayland, (2014), 43 Adv. Q.
•The Value of a Proactive Legal Risk Management Policy for Retail Companies, co-written with Christopher M. Hubbard and Elder C. Marques, Financier Worldwide, April, 2014
•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, Canadian Privacy Law Review, Vol. 11, No. 3, February 18, 2014
•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
•Responding to a Money-laundering Investigation, co-written with Andrew Matheson, Financier Worldwide, February, 2014
•Pre-Trial Options for Creditors in Ontario: What's on the Menu and How You Should Order, co-written with Sarit Batner, Osgoode Hall Annual Course in Debtor-Creditor Litigation, May 27, 2013
•Out of Time? The Law on Limitation Periods and Judicial Review Applications in Ontario, co-written with Eli Mogil, Ontario Bar Association Conference - Your First Judicial Review, May 7, 2013
•When Can Defense Lawyers Jump the Gun? A Look at the Jurisprudence Concerning Early Opening Addresses at Trial, Ontario Bar Association's Institute: Criminal Justice - Evidence and the Art of Persuasion, February 9, 2013
•The Application of the Rule in Browne v. Dunn to Closing Submissions at Trial, Ontario Bar Association's Institute: Criminal Justice - Evidence and the Art of Persuasion, February 9, 2013
•The Place of an Arbitration: Why is it Important?, co-authored with Thomas Heintzman, Q.C., presented at the ADR Institute of Canada's Annual National ADR Conference, October 25, 2012
•Judicial Review of Commercial Decisions, co-written with Sarit Batner and Brandon Kain, Osgoode Hall 8th Annual National Forum of Administrative Law & Practice, October 24, 2012


Documents by this lawyer on Martindale.com

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Class, Do Your Homework: Causation and Damages Methodologies at Certification
Justin H. Nasseri, June 27, 2014
In Andriuk v. Merrill Lynch Canada Inc., the Alberta Court of Appeal affirmed a certification judge’s decision that an action, commenced pursuant to Alberta’s Class Proceedings Act, did not meet the requirements for certification of a class proceeding, based on a failure to demonstrate...

Explain yourself! The Ontario Court of Appeal Reminds Us of the Importance of Reasons in Barbieri v. Mastronardi
Justin H. Nasseri, June 10, 2014
Recently, the Ontario Court of Appeal reminded us of the importance of reasons for judgment in Barbieri v. Mastronardi. A unanimous Court allowed an appeal from an order granting summary judgment to a plaintiff who sued for breach of contract and negligence, holding that the lack of sufficient...
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Office Information

Justin H. Nasseri

66 Wellington Street
TorontoON M5K 1E6


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