Cathy Guirguis


(416) 981-9347
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Cathy is a partner at OKT LLP. Her practice is focused on litigation representing Indigenous groups. Cathy has appeared in different levels of court in Ontario and Manitoba, as well as in federal court and at the Supreme Court of Canada, with respect to various matters related to the  protection and assertion of Aboriginal and treaty rights and land claims.  She has also represented Indigenous clients in proceedings and tribunals regarding election, labour and employment, and environmental assessment. Cathy provides negotiation advice regarding Aboriginal and treaty rights, lands claims, and consultation, and she also advises clients on day-to-day employment matters and governance administration. She received her LL.B. from Osgoode Hall Law School, and she also has a Masters of Environmental Studies.

While at law school, Cathy was a senior editor of the Osgoode Hall Law Journal and she volunteered at Osgoode’s Community LEGAL AID Services Program, and Downsview Legal Aid Clinic. She has also worked with the Centre for Indigenous Environmental Resources (CIER), working on projects dealing with the duty to consult and accommodate, and indigenous environmental laws. Prior to law, Cathy worked in international development and she has a background in journalism.

Cathy is a member of the Ontario bar.

The Services of Cathy Guirguis are provided through a Professional Corporation

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