不同技术发展阶段的专利价值影响因素分析

The Influencing Factors of Patent Value in Different Technological Stages

不同的技术发展阶段具有不同的技术特征,因此在专利引证网络中,具有价值的专利的结构特征也并不是一成不变。先前关于专利价值的研究大多分析的是专利的静态性指标,且对不同技术发展阶段的专利价值影响因素的差异研究较少。因此从不同的技术发展阶段分析专利的动态性指标对专利价值的影响。选取美国LED专利作为样本,并以专利诉讼为专利价值的代理变量,建立Logistic回归模型分析在技术发展的不同时期外向度数中心性、内向度数中心性和有效规模对专利价值的影响程度有何不同。实证研究结果表明:在技术发展的早期,外向度数中心性、内向度数中心性和有效规模对专利价值不具有显著性影响;而在技术发展的成熟期,外向度数中心性、内向度数中心性对专利价值具有显著的正向影响。同时,研究还发现在LED不同技术领域中,各自变量对专利价值的影响也不同。

Different technological stages have different technology characteristics, so the structure of valuable patents is not fixed in patent citation network. Most of the previous patent value research only considers patent static indicators and rarely focus on the different factors that influence patent value in different technological stages. Therefore, the author attempts to examine whether patent dynamic indicators can influence patent value in different technological stages. The author chooses patent litigation as the proxy variable of patent value, a logistic regression model is built to explore whether out-degree centrality, in-degree centrality and effective size can result different influence on patent value in different technological stages. The empirical result demonstrates that out-de- gree centrality, in-degree centrality and effective size do not have significant influence on patent value in the early stages, and out-degree centrality, in-degree centrality have significant positive influence on patent value in the mature stages. This study also demonstrates that these variables have different effect on patent value in the different technology fields. These analytical results will help companies to carry on reasonable LED patent layout relaying on different technological