Mr. Marion had previously been elected to Fellowship in the American College of Trial Lawyers, the International Academy of Trial Lawyers and the American Academy of Appellate Lawyers. He is listed in Who's Who in American Law, Best Lawyers in America, and the Chambers Guide to America's Leading Lawyers.
Mr. Marion is a former chairman of Montgomery McCracken and a former Chancellor of the Philadelphia Bar Association. He is widely known for his successful trial practice, concentrating in business litigation, antitrust, securities, professional liability and communications law.