Stefan specialises in complex litigation, domestic and international arbitration, and in alternative dispute resolution. His main areas of expertise are M&A and Private Equity, Finance, Joint Ventures, Corporate disputes, follow-on cartel litigation, and complex commercial contracts. Stefan has represented clients in state court litigation throughout Germany as well as in domestic and international arbitration proceedings under the rules of all major arbitral institutions. In addition, he is a sought-after arbitrator. Since 2004, Stefan heads Gleiss Lutz dispute resolution practice.