CAJ | 학술논문

1985-2013年，国家知识产权局专利复审委员会共计做出2035项发明专利无效审查决定。对这2035项无效审查决定所涉及的国内外发明专利被维持有效的情况及专利特征相关数据的比较分析发现，国内发明专利稳定性整体上高于国外发明专利，但国外专利权人运用撰写策略保持专利稳定性的能力更高。国内外发明专利的专利年龄、权利要求数、同族专利数、IPC分类数这几项专利特征的分布，在稳定及不稳定两种状态下均表现出显著的差异。
1985-2013년，국가지식산권국전리복심위원회공계주출2035항발명전리무효심사결정。대저2035항무효심사결정소섭급적국내외발명전리피유지유효적정황급전리특정상관수거적비교분석발현，국내발명전리은정성정체상고우국외발명전리，단국외전리권인운용찬사책략보지전리은정성적능력경고。국내외발명전리적전리년령、권리요구수、동족전리수、IPC분류수저궤항전리특정적분포，재은정급불은정량충상태하균표현출현저적차이。
During the period of 1985--2013, the Patent Reexamination Board of SIPO had made a total of 2035 invention patents invalid decisions. This paper made a comparative analysis on the invalidity and related patent characteristics of domestic and foreign invention patents involved in the 2035 patents invalid decisions. The empirical results show that the stability of domestic pa- tents is better than that of foreign patents, however foreign patent holders are good at strategically using patent claims to guarantee the patent stability. Besides, the domestic and foreign invention patents above are divided into two groups according to their patent invalidity, the distributions of patent characteristics which are patent age, number of patent claims, size of patent family and number of IPC, all exhibit significant differences in both groups for domestic and foreign invention oatents.