The variation effect of patent system based on invention patents

Zhang Gupeng; Chen Xiangdong

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Science Research Management ›› 2012 ›› Issue (6) : 110-119.

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The variation effect of patent system based on invention patents

Zhang Gupeng, Chen Xiangdong

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Abstract

By using Chinese invention patents, the impact of twice patent system variations in the years of 1993 and 2001, respectively on the behaviors of patentee is investigated. The patents selected as the research subjects are only two years before and after the patent system variation, therefore other environmental variables remain constant. Three variables are used to describe the characteristics of patentee’s behavior and their trust on patent system, namely, patent grant, provisional life, and active life. The method of Log-rank test and treatment effect is adopted for investigating the patentee’s behavior differences before and after patent system variation. The result shows that patent grant rate is raised and provisional life is extended after twice patent system variations, it is indicated that patentee’s trust on patent system increases. However, patent’s active life is not extended; it means that the protection provided by patent system still insufficient for patentees, and patentees still distrust the patent system.

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patent law / provisional life / active life / patent system

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Zhang Gupeng, Chen Xiangdong. The variation effect of patent system based on invention patents[J]. Science Research Management. 2012(6): 110-119

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