Immigration and Family Law. The Law Office of Gary Mazin has always been dedicated to professional excellence, timely results, high quality service and effective, solution-oriented advocacy. Gary Mazin, the lawyer, is a professional, being a member of both the Canadian Bar Association and the Law Society of Upper Canada. He graduated from Canada 's top Law School , Osgood Hall. In addition, Mr. Mazin graduated from two well known universities in Canada , University of Toronto , where he obtained his Bachelor of Arts, majoring in Business, and York University where he received his Masters degree in Business Administration.