The Analysis to Influencing Factors on the Technological Innovation Based on the Patent Maintenance Time

Compared with the numbers of paten applications and patent granted, the numbers of valid patents and their maintenance times can better embody one country´s technological innovation capability. In this paper, 2921 patents, which granted by the State Intellectual Property Office in China in 1994 and up to April 30, 2007 terminated due to unpaid fees, are analyzed based on the patent information perspective by multivariate linear regression using SPSS software (11.5). The results show that the average maintenance time of patents, which granted by the State Intellectual Property Office, is shorter and the terminated speed quicker. The effecting degrees of a nationality of applicants, a examination time, a types of patentees, a number of inventors and a claims number of patents on the paten maintenance time followed by weakening.