Sean M. Grayson

Partner

Sean M. Grayson is a partner at Roy O’Connor LLP. He practices all aspects of corporate/commercial, civil and class actions litigation. He has considerable experience advising clients in large and complex litigation matters.

Sean has diverse experience in matters involving general corporate and shareholder disputes, directors and officers duties and responsibilities and indemnities, securities litigation – OSC/IIROC, estate matters, mining disputes, negligence and contractual disputes, financial institutions, investment advisor disputes, employment disputes, matters before regulated health profession boards, executive compensation, administrative law and both plaintiff and defence class actions.

Sean has been  named a Litigation Star for the last several years by Benchmark Canada.

Some of the recent and ongoing matters he is currently involved in include:

• Successfully defending the certification of a class proceeding against a former Mutual Fund Dealer, sales persons and various other entities
• Acting on behalf of a company in a arbitration involving oppression and other corporate matters
• Acting on behalf of a company and its board in respect of various oppressions claims
• Acting on behalf of various entities in an arbitration to determine proper accounting practices and financial statements relating to a sale of a business
• Acting on behalf of a seller in an arbitration involving alleged financial statement fraud and negligence
• Successfully acting on behalf of a group of beneficiaries in a trust/oppression application in respect of multiple estate freezes
• Successfully having an alleged settlement agreement overturned at first instance and upheld at the Court of Appeal
• Acting on behalf of private company to remove a cease trade order of the OSC for non-compliance with NI 43-101
• Acting as counsel to obtain a vesting order in respect of international property owned by wound-up US entities and parties
• Acting as litigation counsel in various Plans of Arrangement
• Acting on behalf of a party in a successful guardianship application
• Part of counsel group in Quenneville et al. v. Volkswagen et al. (Volkswagen Diesel Emission Manipulations)
• Acting on behalf of a dentist in RCDSO Registrar investigation
• Counsel in various estate matters involving passing of accounts
• Successful appeal before Health Professions Review and Appeal Board
• Acting on behalf of a group of companies in an alleged fraud case
• Acting on behalf of one of Canada’s national banks in respect of various investment related law suits
• Acting on behalf of an investment dealer in proceedings before IIROC
• Acting on behalf of various executives and individuals for claims of wrongful termination and termination for cause
• Acting on behalf of individuals in respect of director and officer liability claims and corporate indemnities
• Successfully 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 on behalf of a group of condominium purchasers in a class proceeding brought for alleged overcharges for development fees
• Acting on behalf of Rio Algom/BHP Billiton in respect of litigation with the Federal Government over its historic mines in Elliot Lake
• Acting on behalf of a former director and executive in a circular and proxy disputes
• Acting in a class proceeding on behalf of condominium purchasers who paid allegedly improper development charge increases
• The successful defence of several former Directors of a TSX listed company in multijurisdictional proceedings
• Successfully acting as part of the counsel team in respect of indemnity applications against a TSX listed company
• Acting as part of a counsel team on behalf of a shareholder and creditor in respect of CCAA proceedings
• Acting as part of the counsel team in several national unpaid overtime class actions with respect to alleged unpaid overtime and misclassification of employees
• 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, appearing before the Supreme Court of Canada and responsible for the administration of the proceeding
• Litigation arising out of the RIM Park financing on behalf of the City of Waterloo
• The pre-1986 and post-1990 Hepatitis C settlement for claimants in litigation against the Federal Government
• The defence of various class proceedings and other proceedings arising out of the collapse of Bre-X Minerals