This study applies two variables in the measurement of company patent deployment strate-gies: patent family depth and earn plan ratio. Patent family depth represents the degree to which certain fields and markets are valued by the patent owner. Earn plan ratio defined as the ratio of the number of patent forward citations to patent family size. Earn plan ratio indi-cates the degree to which a patent family could be cited by later innovators and competitors. This study applies a logistic regression model in the analysis LED industry data. The results demonstrate that patent value has a positive relationship with the patent family depth, and earn plan ratio.
Wu, M. F., Chang, K. W., Zhou, W., Hao, J., Yuan, C. C., & Chang, K. C. (2015). Patent deployment strategies and patent value in LED industry. PLoS ONE, 10(6). https://doi.org/10.1371/journal.pone.0129911