Thompson Dorfman Sweatman

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Thompson Dorfman Sweatman LLP
TDS Primary Logo.jpg
Headquarters242 Hargrave Street
True North Square
Winnipeg, Manitoba, Canada
No. of offices10
No. of attorneys100
Major practice areasCorporate/Commercial, Litigation, Labour & Employment
Key people Keith LaBossiere (CEO, Managing Partner), Allan Fineblit Q.C. (Counsel and COO), Bjorn Christianson (Managing Partner, Portage la Prairie), Paul Roy (Managing Partner, Brandon)
Date founded1887;132 years ago (1887) in Winnipeg
Company type Limited liability partnership

Thompson Dorfman Sweatman LLP (TDS) is a Manitoba, Canada-based law firm with its head office in Winnipeg. The firm has two full-time regional office in Brandon and Portage la Prairie and seven part-time satellite offices in Boissevain, Gladstone, MacGregor, Morden, Steinbach and Winkler.

A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients about their legal rights and responsibilities, and to represent clients in civil or criminal cases, business transactions, and other matters in which legal advice and other assistance are sought.


On May 27, 2010 Thompson Dorfman Sweatman announced a merger with the firm Perlov Stewart LLP. The merger became effective June 1, 2010. Both firms continued under the name Thompson Dorfman Sweatman LLP. [1]

On January 14, 2013 the firm announced a merger with the firm Christianson Law of Portage la Prairie, Manitoba. [2]

On January 7, 2014 the firm announced another merger with the firm Roy Johnston & Co. of Brandon, Manitoba. [3]


Thompson Dorfman Sweatman was formed in 1887 in Winnipeg and has roughly 88 active lawyers. TDS has lawyers who provide services to its clients in both Official Languages of Canada and also in Italian, Russian, Hebrew and Portuguese.

The Official Languages Act is a Canadian law that came into force on September 9, 1969, which gives French and English equal status in the government of Canada. This makes them "official" languages, having preferred status in law over all other languages. Although the Official Languages Act is not the only piece of federal language law, it is the legislative keystone of Canada's official bilingualism. It was substantially amended in 1988. Both languages are equal in Canada's government and in all the services it controls, such as the courts.

Affiliated companies

On May 27, 2009 Thompson Dorfman Sweatman LLP announced the launch of Acumen Corporate Development Inc., an affiliate of Thompson Dorfman Sweatman LLP. [4] Acumen focuses on providing North American companies with a structured, comprehensive approach to the planning and execution of growth by acquisition, financing and other strategic opportunities.


The firm has received awards and distinctions from third party organizations including Chambers Global, [5] [ failed verification ] Lexpert, [6] [ failed verification ] Best Lawyers, [7] Benchmark Litigation [8] [ failed verification ] and Canadian Lawyer Magazine [9] which rated them one of the top corporate law firms in Manitoba.

Lex Mundi

TDS was one of the founding members of Lex Mundi, an association of Independent Law Firms and continue to be its only Manitoba based firm.[ citation needed ]

Notable firm alumni

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  1. "Thompson Dorfman Sweatman LLP (TDS) Announces Merger With Perlov Stewart LLP". Marketwired. 2010-05-27.
  2. "Thompson Dorfman Sweatman LLP (TDS Law) Announces Merger With Christianson Law". Markedwired. 2013-01-14.
  3. "Thompson Dorfman Sweatman LLP (TDS Law) Announces Merger with Roy, Johnston & CO. LLP". Marketwired. 2014-01-07.
  4. "Thompson Dorfman Sweatman LLP (TDS) Announces the Launch of Acumen Corporate Development Inc". Marketwired. 2009-05-27.
  5. "Thompson Dorfman Sweatman LLP - Winnipeg - Law Firm Profile - Global Guide 2018 - Chambers and Partners". Retrieved 2018-06-28.
  6. "Lexpert". Retrieved 2018-06-28.
  7. "Thompson Dorfman Sweatman LLP - Best Lawyers Firm Profile". Best Lawyers. Archived from the original on 2014-01-07. Retrieved 2018-06-28.
  8. "Law firm profile for Thompson Dorfman Sweatman | Benchmark Litigation". Archived from the original on 2015-09-23.
  9. Todd, Robert (2011-10-03). "Prairie gold". Canadian Lawyer Magazine. Retrieved 2018-06-28.