Mr Guy J. Pratte, AdE > Borden Ladner Gervais LLP > Ottawa, Canada > Lawyer Profile

Borden Ladner Gervais LLP

Work Department

Commercial Litigation


Partner and Chair Emeritus, BLG.


Chair Emeritus, BLG. Guy focuses his practice on commercial litigation including class actions, administrative law, and constitutional law, and he is also often retained in complex cases of all types. Fully bilingual, he has an active practice in Ontario and Québec. Guy pleads frequently before the Supreme Court of Canada and the Superior and Appeal Courts of Ontario and Québec, as well as the Federal Court and Federal Court of Appeal. He is a Fellow of the American College of Trial Lawyers, President of The Advocates’ Society, and a Director of the Supreme Court of Canada Advocacy Institute. He taught courses focused on the Supreme Court of Canada at the University of Toronto as an Adjunct Professor. He is a recipient of the Law Society of Ontario medal and of the Ontario Bar Association Award of Excellence in Civil Litigation. He is also highly recognized in various industry directories, including Chambers GlobalThe Best Lawyers in CanadaThe Canadian Legal Lexpert Directory and Who’s Who Legal. Guy was named Advocatus Emeritus by the Québec Bar for “outstanding contributions to the legal profession.”


English and French


Director, Advocates’ Society. Fellow, American College of Trial Lawyers. Director, Supreme Court of Canada Advocacy Institute.


LLB, University of Toronto. MA, University of Toronto.

Lawyer Rankings

Canada > Dispute resolution

(Leading individuals: Ontario)

Guy PratteBorden Ladner Gervais LLP

Borden Ladner Gervais LLP‘s dispute resolution offering has a strong presence across the country, where it acts for a broad client base that includes multinationals and domestic heavy-hitters from a variety of industries. In Western Canada, the Calgary office is frequently engaged in commercial litigation and regulatory disputes in the energy and oil and gas sectors, with Randall Block a standout lawyer in that office, along with regional group manager Michael Marion. Class actions are among the strengths of the firm’s disputes group in Vancouver, where Brad Dixon was part of a cross-region team acting for the Bank of Nova Scotia in certified competition class action litigation relating to merchant acceptance fees in credit card transactions. Transportation law, environmental law and insurance claim defence are among the team’s other strengths in British Columbia; Robert Deane and Michelle Maniago have been particularly active in these areas and others recently. David Di Paolo heads the national dispute resolution group from the Toronto office and specializes in securities litigation, class actions and shareholder disputes, and senior counsel Guy Pratte, noted for his expertise in class actions and complex constitutional law, splits his time between Ontario and Quebec. A dedicated fraud law group distinguishes the Montréal office in the market, and it is also recommended for its strengths in bilingual class actions. Mathieu Piché-Messier and Patrick Plante are among the key contacts there.