Cai Jian is a lawyer and patent attorney at Chang Tsi & Partners, who has over two decades of experience in intellectual property legal matters. During his career, Cai Jian has served as a patent examiner at the China National Intellectual Property Administration (CNIPA), and held the roles of patent consultant and patent manager for multiple leading technology companies including Huawei, Baidu, LeTV, and Ele.me. He also served as the Intellectual Property Director at Didi Global, overseeing IP strategy for the company on a global scale.