Research on the Contribution of the Number of Patent Families to the Value of Patents——Taking Solar Energy as An Example

[Purpose/significance] Research on the contribution of the number of patent families to the value of patents can provide an important reference for patents strategy layout optimization and patent value evaluation. [Methods/process] Taking the new clean solar energy field as an example, we identified high-value and low-value patent data sets, and designed experiments on patent family size differences between high-value patents and low-value patents. Finally, then SPSS 22 was used to verify the model. [Results/conclusion] Empirical research have shown that the contribution of the number of patent families to the value of patents is not invariable. With the continuous expansion of the patent families, the proportion of patent families is no longer significant difference between high-value patents and low-value patents. At this time, the increase in the number of patent families has significantly reduced the contribution to patent value