Dennis M. O’Leary

Partner at Aird & Berlis LLP

An experienced litigator and commercial lawyer with four decades of advocacy experience. Member of the firm’s Litigation, Transportation and Mining Groups as well as Co-Chair of the firm’s Energy Group and Environmental Group. Practises in the areas of energy and environmental, transportation, regulation, insurance and commercial litigation. Has appeared before all levels of the courts and numerous administrative tribunals in respect of a broad range of regulatory and litigation matters, many of which involved significant energy, environmental and transportation law matters. Has a strong understanding of the specialized legal and regulatory environment that comprises Indigenous law. Recognized in The Best Lawyers in Canada and recommended in The Legal 500 Canada.

Year Called to the Bar: 1984

Phone: (416) 865-4711

Fax: (416) 863-1515

Email: [email protected]

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