Study of China Bio-pharmaceutical Industry Patent Status and Co-inventor Collaboration Network Evolution

Based on the patent data of the state intellectual property office from 2000 to 2009, the authorization situation of the patent, regions, countries, and patent claims of bio-pharmaceutical industry are analyzed first. Then, the evolution of the biological medicine industry cooperation network characteristics of patent inventor is given. The result shows that: the claimed number authorized number of domestic biological medicine patent are more than abroad; China's bio-pharmaceuticals develop unevenly, which are focusing on a few provinces; the quality of Chinese patents and that of the United States vary greatly; the ratio of the inventor cooperation intensity, average degree of network, high yield inventors and repeat partners appear in constantly increasing trend.