McCarthy Tétrault

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McCarthy Tétrault LLP
McT Logo.png
HeadquartersToronto, Ontario, Canada
Date founded1855

McCarthy Tétrault LLP is a leading Canadian law firm that delivers integrated business law, litigation services, tax law, real property law, labour and employment law nationally and globally through offices in Vancouver, Calgary, Toronto, Montréal, Québec City, London (UK), as well as New York City.[1] McCarthy Tétrault LLP is a Seven Sisters (law firms).[2][circular reference] Among the Seven Sisters, the reigning top players are McCarthy Tetrault LLP, Stikeman Elliott LLP, Osler Hoskin & Harcourt LLP and Blake Cassels & Graydon LLP.[3][circular reference]

McCarthy Tétrault is the only law firm listed in the Report on Business Top 25 Best B2B Brands by The Globe and Mail in 2021,[4] and it has the second strongest law firm brand in Canada according to Thomson Reuters’ Regional Law Firm Brand Indexes 2021.[5][6][7]

The firm represents Canadian and international clients, including major public institutions, financial services organizations, mining companies, manufacturers, pharmaceutical companies and other corporations.

McCarthy Tétrault’s London office specializes in assisting clients with their transatlantic transactions, and is staffed with both English and Canadian-qualified lawyers.[8] A charter member of the Canada-UK Chamber of Commerce,[9] it provides services in Europe, Africa and the Middle East.


The firm had its origin in the formation of Boulton & McCarthy in Barrie, Ontario, of which Dalton McCarthy was a co-founder. It would later become McCarthy & McCarthy upon the admission of his son Leighton McCarthy.

McCarthy Tétrault was created through the merger McCarthy & McCarthy of Toronto, Clarkson Tétrault of Montreal, Shrum Liddle & Hebenton of Vancouver, and Black & Company of Calgary.[10] This merger was initially denied by the Law Society of Alberta, which enacted rules designed to stop it. The rules prohibited members from entering into a partnership with anyone who was not a resident of Alberta, and prohibited members from being partners of more than one firm. This rule was challenged as being contrary to the mobility rights protected by the Charter of Rights and Freedoms. In the resulting court case, Black v. Law Society of Alberta,[11] the Supreme Court of Canada struck down the rules. The subsequent merger made McCarthy Tétrault Canada's first national law firm.[12]

Notable alumni[edit]


  1. ^ "Offices".
  2. ^ "Seven Sisters (Law firms)".
  3. ^ "Seven Sisters (Law firms)".
  4. ^ Dasoo, Aaliyah (2021-05-28). "Strike up the brands: Which companies have impressed Canadian executives through innovation, culture and social responsibility". The Globe and Mail. Retrieved 2021-10-05.
  5. ^ "Blakes takes top spot in Thomson Reuters/Acritas Canadian law firm brand survey for seventh year". Retrieved 2021-10-05.
  6. ^ "Top 10 Law Firm Brands in Canada | Legal Current". Retrieved 2021-10-05.
  7. ^ "Under Shadow of COVID, Blakes Tops Canadian Law Firm Brand Index for 6th Consecutive Year". International. Retrieved 2021-10-05.
  8. ^ "People | McCarthy Tétrault". Retrieved 2018-08-25.
  9. ^ "London, UK | McCarthy Tétrault". Retrieved 2018-08-25.
  10. ^ "Introduction to McCarthy Tetrault" (PDF). Christoper Moore. Archived from the original (PDF) on 3 April 2014. Retrieved 6 September 2016.
  11. ^ "Black v. Law Society of Alberta". LEXUM – Supreme Court of Canada. January 2001. Retrieved 15 April 2022.
  12. ^ "Law Firm Rankings and Analysis". LMG Life Sciences. Archived from the original on 16 September 2016. Retrieved 6 September 2016.

External links[edit]