Mario practices condominium law and acts for condominium corporations and developers. He became a senior partner of the firm in 1994. At the request of the Ontario Ministry of Consumer and Commercial Relations, Mario participated in drafting and recommending improvements to Bill 38 on behalf of the firm.

Mario has lectured at the Canadian Bar Association on Bill 38 and is a frequent lecturer at many professional conferences and seminars, including those sponsored by the Canadian Condominium Institute and the Association of Condominium Managers of Ontario. In addition, Mario has written and published many articles on a wide variety of legal issues related to condominium law.

Mario is presently a member of the Association of Condominium Managers' Ethics Committee which reviews the alleged misconduct of Condominium managers.

B.A., University of Toronto, Political Science and Economics, 1982
LL.B., University of Western Ontario Law School, 1986