基于专利信息的我国发明专利无效行为实证研究

An Empirical Study on Invention Patent Invalidation Behavior in China Based on Patent Information

国家知识产权局专利复审委员会在1985-2013年间,共计做出发明专利无效审查决定2 463项,涉及2 035项发明专利。以无效审查决定相关的法律状态信息及已授权发明的专利信息为基础,构建权利要求数、发明人数、IPC分类数、同族专利数及专利权稳定性指标,分别从时间、专利权人主体及技术领域三个维度,对我国发明专利无效行为进行实证研究。对我国发明专利无效行为的特征、专利权稳定性的特点及其影响因素相关的实证结果,丰富了我国对专利无效制度及专利策略行为的研究。

During 1985-2013, the Patent Reexamination Board of SIPO has made a total of 2 463 items of invention patents invalid deci-sions in which 2 035 items of invention patents are involved. Based on both patent application information and patent legal status informa-tion, the paper constructs patent claims number, patent inventor number, IPC number, patent family size and patent stability indicator, and makes an empirical study on invention patent invalidation behavior in China from time, patent holder and technology dimensions. The empirical results about characteristics of patent invalidation behavior, patent stability and their influencing factors enrich the researches on patent invalidation system and strategic patent behavior in China.