He is certified by the Law Society of Upper Canada as a specialist in civil litigation, and is a former administrative law judge, and adjunct law professor at Osgoode Hall Law School where he taught legal ethics and trial advocacy.

Marvin holds a Master of Laws Degree in Alternative Dispute Resolution from Osgoode Hall Law School where he served as a negotiation and mediation coach. He has also served as a civil litigation and advocacy instructor at the Law Society of Upper Canada, Bar Admission Course.

Marvin has expertise in corporate/commercial litigation and administrative and public law, including cases involving contracts, labour, corporate and shareholder remedies, securities, tax, insurance, fiduciary duties, torts, transportation law, professional liability and ethics, and constitutional/human rights.

Marvin co-authored a book entitled “A Puisne Judges’ Guide to Alternative Dispute Resolution: A Handbook for Canadian Judges on ADR in the Courts”, and published several articles, including “Pre-Trial Conferences and Alternative Dispute Resolution Techniques: Maximizing Settlement Potential”, and “ADR in the United States Federal Administrative Justice System -The Administrative Conference of the United States”. His Master of Laws thesis is entitled “Integrating Alternative Dispute Resolution Into Administrative Justice Systems: Improving Society and Justice” and was written in consultation with the Deputy Attorney General of Canada and the Department of Justice Canada.

Marvin is also a founding member of the Chief Justice of Ontario’s Committee on Professionalism in the Legal Profession (2001).