Marvin Lange’s practice focuses on the resolution of complex commercial disputes. He has represented clients in state and federal court, arbitration and mediation, in cases arising out of business and financial disputes. He has experience litigating claims for breach of contract and business torts and claims based on federal and state statutes such as the antitrust, bankruptcy and securities laws, Racketer Influenced and Corrupt Organizations Act (RICO), Employee Retirement Income Security Act (ERISA), and the New York Labor Law. He has litigated individual and class actions.

Many of Mr. Lange's cases include aspects of foreign law or procedure. He represents foreign clients, conducts international discovery, coordinates multi-jurisdictional litigation with foreign counsel, pursues recognition and enforcement of foreign judgments, and takes domestic discovery for use in foreign proceedings.