Duan & Duan & Duan is a full service law firm providing services to clients in a variety of areas. The firm has eight practice areas:Corporate, International Investment & Trade and Antitrust,Intellectual Property, Litigation, International Arbitration,Construction & Engineering, and Real Estate. Each department is led by partners with authority and expertise in their professional area. The departments work cooperatively on matters involving multiple practice areas tocover a broad range of issues and services efficiently and timely.