Lawyer Profile Detail

Atrisha S. Lewis










[email protected]



University of Toronto


Ontario, 2013


Atrisha Lewis is an associate in McCarthy Tétrault’s Litigation Group in Toronto. She maintains a litigation practice focused on commercial disputes (including breach of contract and oppression claims), professional liability litigation, intellectual property litigation and tax disputes. Ms. Lewis has appeared before all levels of Court in Ontario, the Federal Court, and the Federal Court of Appeal. She has considerable trial experience and has been counsel in private arbitrations.


  • Counsel to the successful defendant physician in a medical negligence trial in Bauer v Kilmurry, 2016 ONSC 7749;
  • Counsel to the successful defendant in Re GrowthWorks Canadian Fund Ltd., 2015 ONSC 6875, a dispute over the interpretation of a contract;
  • Counsel to successful respondent at the Divisional Court in a dispute about the distribution of proceeds from a sale of a winery in Scene Holding Inc. v. Moos, 2014 ONSC 1378;
  • Counsel to the successful plaintiff in patent litigation trial in Abbvie Corporation v. Janssen Inc, 2014 FC 489.

Atrisha has consistently demonstrated her commitment to leadership in the law profession. She has lectured at the University of Toronto Faculty of Law on topics such as motions and litigation strategy. Atrisha is a career columnist at Precedent Magazine, a leading Canadian publication for lawyers. She also frequently speaks on topics related to diversity, a topic she is passionate about. Recently, she was selected by the CivicAction Leadership Foundation as a 2018 DiverseCity Fellow, only one of 25 to be chosen for this leadership and skills development program for emerging leaders in the Greater Toronto and Hamilton Area (GTHA).

Atrisha obtained her JD with honours from the University of Toronto, Faculty of Law in 2012. Upon graduation from law school, she was recognized with the Dean’s Key award. This award recognizes a student who has best demonstrated academic excellence and extra-curricular achievement during their time in law school. She also received many other leadership and academic accolades, including the Class of 1967 Prize for placing 3rd in 3rd year, the Gordon Cressy Student Leadership Award, and the BLG Professional Excellence Award. She was also extensively involved in mooting and represented the University of Toronto at both the Phillip C. Jessup Moot and the Donald G. H. Bowman Tax Moot. She also obtained a Bachelors of Commerce with Great Distinction at McGill University in 2009, where she concentrated in Accounting and Global Strategy.

Atrisha was called to the Ontario bar in 2013. She is a member of the Law Society of Upper Canada, the Canadian Bar Association, the Ontario Bar Association, and the Advocates’ Society. She is fluent in French.


Transactions & Cases

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McCarthy Tétrault delivers integrated business law, tax, real property, labour and employment, and litigation services nationally and globally through offices in Vancouver, Calgary, Toronto, Montréal, Québec City, as well as in New York City and London, UK.