安全应急产业专利被引与专利权放弃之间的相关性分析

Analysis of the Correlation between Forward Patent Citation and Patent Waiver in the Safety Emergency Industry

专利被引是存在争议的专利评价指标,业界普遍认为专利被引具有正面的评价意义,但也有相反的观点被不断提出。本文从专利被引与专利权放弃之间的关联现象入手开展实证研究,在一个新的视角下对专利被引的评价意义进行再认识。以4个技术领域共计24510项授权发明专利为样本,运用多元统计差异分析方法,对专利是否被引与专利权是否放弃之间的相关性进行探索,经log-linear对数线性模型和交叉列联表计算并依据χ2统计量和概率P值进行判断,发现二者之间具有统计学意义的显著相关性,即发生了被引的专利更倾向于放弃专利权。本文的研究结论为客观理解专利被引的情报学意义增添了新内容,为应用专利被引指标进行专利评价提供了新视角。

The forward patent citation is a disputable patent evaluation index,although it is generally considered by the academia to have a positive evaluation significance.However,opposing standpoints have been presented constantly.This study conducts an empirical analysis on the correlation between forward patent citation and patent waiver,rediscovering the evaluation significance of forward patent citation from a new perspective.Taking 24,510 safety emergency industry patents in four technological domains as samples,this study explored the correlation between forward patent citation and patent waiver using a log-linear model and multivariate statistical difference analysis method.Based on the calculation of cross contingency table,chi-square statistics,and the probability value,this study found a statistically significant correlation between the two factors,implying that patents are more likely to be waived once cited.This study􀆳s discovery provides new content to objectively understand the meaning of forward patent citation in information science and establishes novel ideas in using an index of forward patent citation to evaluate patents.