Li Renjiu is the director of Pharmaceutical and Biological Department I of the Patent Reexamination Board of the State Intellectual Property Office (SIPO). Li graduated from the department of pharmacy of former Peking National Medical School (Peking University Health Science Center nowadays) with a bachelor's degree in 1995, and obtained a master's degree at the Research Base of Clinical Medical Sciences of China-Japan Friendship Hospital in 1998. He started his career in Pharmaceutical and Biological Invention Examination Department of SIPO in 1998 and moved to the Patent Reexamination Board of SIPO in 2003. During his tenure in SIPO, he has served as patent examiner, deputy director and director successively. In 2006, Li Renjiu participated in the IP rights litigation judgments for one year at Beijing No.1 Intermediate People's Court. From August to December, 2009, Li was a visiting scholar at Cardozo School of Law in the United States. At present, he is also a member of National Committee on the Assessment of the Protected Traditional Chinese Medicinal Products and a member of Pharmaceutical Intellectual Property Research Committee of Chinese Pharmaceutical Association.