Toronto Litigation
Lawyers
Bencher
Law Society of Ontario
Lexpert Rising Star
Leading Lawyer 40 and under
12+ Years
Bay Street Experience
Contact Us
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Bencher
Law Society of Ontario
Lexpert Rising Star
Leading Lawyer 40 and Under
12+ Years
Bay Street Experience
Case Results
Our Results Speak for Themselves
Jury Trial Win
Won a three week medical negligence trial before a jury as lead counsel in 2025
Significant Appeal Experience
Represented a number of clients before the Supreme Court of Canada, the Ontario Court of Appeal, and the Federal Court of Appeal, including most recently at the Supreme Court of Canada in Stephen Emond and Claudette Emond v. Trillium Mutual Insurance Company
Motion Success
Successfully moved for security for costs in 2496300 Ontario Inc. v. Farm Mutual Reinsurance Plan Inc., 2023 ONSC 5178, successfully obtained mareva and norwich orders in Sutton et al. v. Dayaram et al., 2022 ONSC 2413
About Us
Lawyer Profile
Atrisha Lewis is the founder of Lewis Litigation. She is a trial and appellate litigator and with a practice focused on commercial disputes, professional liability, class actions and administrative law disputes. She has won trials by jury and by judge alone. Atrisha also assists clients with their most complex and sensitive problems by conducting internal investigations. Atrisha has argued before all levels of Court.
Atrisha has consistently demonstrated her commitment to the legal profession. In 2019, Atrisha was elected as bencher of the Law Society of Ontario. She is currently the chair of the Professional Development and Competence Committee, which is the committee responsible for entry level and continuing competence of lawyers and paralegals in Ontario. Atrisha is also the Ontario representative to the Federation of Canadian Law Societies. Atrisha is a member of the Supreme Court of Canada Bench and Bar Liaison Committee.
In 2021, Atrisha was recognized with the Globe and Mail’s “Changemakers” award and appeared on the cover of the Globe and Mail’s Report on Business. In 2020, she was awarded the Women in Law Leadership’s “Stronger Together Award” as well as the University of Toronto’s Wilson Prichard award for outstanding contribution to the legal profession. In 2019, she was recognized as one of Lexpert’s Rising Stars: Leading Lawyer Under 40. In 2018, she was recognized as a “Precedent Setter” by Precedent Magazine and was awarded an Arbour Award in recognition of her outstanding volunteer contribution to the University of Toronto.


Class Action
Shelter Bed
Lewis Litigation, partnering with Steiber Berlach LLP and the Black Legal Action Centre, has commenced a proposed class action against the City of Toronto for their decision to exclude refugee claimants from accessing the City’s base shelter beds between 2022 and 2023. If you are a refugee claimant and were denied access to a shelter bed in the City of Toronto, we would like to hear from you. Lewis Litigation is interested in advancing the rights of all equity seeking communities.
Class Action
Practice Areas
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Administrative & Public Law
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Appeals & Judicial Review
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Charter & Constitutional Law
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Civil Litigation
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Commercial Litigation
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Class Actions
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Fraud Recovery
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Internal & Special Investigations
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Medical Malpractice
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Personal Injury
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Professional Liability
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Sexual Abuse & Harassment
About The Firm
Our Story
Atrisha founded Lewis Litigation with a vision of creating something different. After 14 years on Bay Street, most recently as a partner at McCarthy Tetrault LLP, Atrisha created a litigation boutique that offered elite level excellence while remaining steadfast in a commitment to diversity, equity and inclusion. Lewis Litigation is committed to using our litigation superpowers to support the communities we are from and that we serve.
Contact Us
Based in Toronto.
Serving All Ontario
We are available 24/7