Terrence O'Sullivan Mandates
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Acting for a law firm in a claim brought against it relating to an alleged defamatory statement made by a partner
Acting for a prominent law firm in its defence of a claim arising out of a statement made by a partner.
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Strother v. 3464920 Canada Inc. (2007), 281 D.L.R. (4th) 640, [2007] 2 S.C.R. 177, 2007 SCC 24
Acted for Canadian Bar Association in leading case concerning conflict of interest and scope of lawyer’s duty of loyalty.
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Katz Group Canada Inc. v. Ontario (Health and Long-Term Care) (2013), 366 D.L.R. (4th) 62, 2013 SCC 64, [2013] 3 S.C.R. 810
Acted for Katz Group Canada on leading case concerning administrative law challenges to regulations.
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Acted as investigator for the Ontario Hockey League in its investigation of the ownership of the Flint Michigan Firebirds
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Canadian Western Bank v. Alberta (2007), 281 D.L.R. (4th) 125, [2007] 2 S.C.R. 3, 2007 SCC 22
Federalism appeal concerning banks’ constitutional challenge to provincial ability to apply market conduct regulation to promotion and distribution of certain types of insurance.
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Represented Rexall Pharmacy in the Supreme Court of Canada in a case involving an interpretation of an Ontario Government regulation prohibiting retail pharmacies from distributing their own label generic products
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Successfully defended the National Hockey League in a claim brought by Labatt Brewing Company concerning an alleged obligation to continue negotiating a renewal of a multi-million dollar sponsorship agreement
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Yaiguaje v. Chevron Corp., 2017 ONSC 604, aff’d 2018 ONCA 472
Acted for Chevron Canada Capital Company on motion to resist being added to action to recognize and enforce US$9.51 billion Ecuadorian judgment.
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Represented a leading Canadian brokerage house in an investigation by the RCMP into whether there insider profits were made with respect to changes to REIT legislation
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Obtained Mareva injunctions freezing the assets of former employees and their families in two different cases of potential fraud perpetrated on the employer
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McDonald v. Home Capital Group
Acted for a Director and Officer of Home Capital before the OSC and with respect to a shareholder class action brought against Home Capital and some of its directors and officers seeking $200 million …
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Represented The Advocates’ Society in the Supreme Court of Canada in the Groia case involving the interpretation of the “Civility Rules” of The Law Society of Ontario