Sean M. Grayson is a partner at Roy O’Connor LLP. He practices all aspects of corporate/commercial, civil and class actions litigation (both plaintiff and defence) and estate litigation. Sean has diverse experience in matters involving and general corporate and shareholder disputes, arbitrations, director and officer duties, responsibilities and indemnities, securities litigation – OSC/IIROC and secondary market liability matters, estate matters, mining disputes, negligence and contractual disputes, matters involving financial institutions, investment advisor disputes, employment disputes, matters before regulated health profession boards, and executive compensation. In recent years Sean has been recognized by Benchmark Canada as a Litigation Star.
Some of the recent and ongoing matters Sean is currently involved in include:
- Acting as counsel in various will challenges, passing of accounts and trustee duty cases
- Acting as counsel in oppression, buy-sell proceedings involving valuations and damages
- Acting as counsel for various defendant franchisees in an employment class action
- Acting as counsel for an officer and director in respect of various misrepresentation claims by shareholders against a former public company
- Acting on behalf of private company to remove a cease trade order of the OSC for non compliance with NI 43-101, and ongoing negligence claims flowing from the CTO and damage to the company;
- Acting for a private company and individual benefices and shareholders in a will challenge and related oppression claim
- Acting as litigation counsel in various plans of arrangement
- Acting as part of counsel group with other members of the firm in various class actions including Quenneville et al. v. Volkswagen et al. (Volkswagen Diesel Emission Manipulations), acting as part of the counsel team for a group of independent directors in Gould v. Western Coal et al., a class and secondary market liability action. Successfully acting as part of the counsel team in the national class proceeding
in respect of the constitutional challenge of survivor pension benefits, Hislop v. Canada, acting as part of the counsel team for the pre-1986 and post-1990 Hepatitis C settlement against the Federal Government, acting on behalf of a group of condominium purchasers in a class proceeding brought for alleged overcharges for development fees, part of the counsel team in several national unpaid overtime class actions with respect to alleged unpaid overtime and misclassification of employees, the defence of various class proceedings and other proceedings arising out of the collapse of Bre-X Minerals, among others
Updated April 2024
