Claim Length as a Value Predictor of a Patent
Okada, Yoshimi : Yusuke Naito : Sadao Nagaoka
WP#16-04 一橋大学イノベーション研究センター (2016/04/07)
The claim of a patent defines the scope of patent right and provides crucial information on patent value. However, most empirical research uses only the number of claims as an indicator of patent value. We show that the breadth of a claim of Japanese patents, measured by the inverse of claim length, has significant explanatory power fo…