Author(s)

Wenchang Li, ZhenYa Wang and Meng ZHAO

Corresponding Author

ZhenYa Wang

Abstract

Patent renewal time is a key factor to reflect the quality of patent, and also an important indicator to measure the value of patent. Patent renewal decision, in which many-sided factors need to be considered, is a necessary link in the later stage of patent life cycle. Taking 3783 invention patents filed in 2010 of universities in Jiangsu Province among them 1372 are alive and 2411 are dead. Mann-Whitney U Test, Kruskal-Wallis H Test and Binary Logistic Regression Analysis were used to analysis the influencing factors of university patent renewal decisions. The results showed that there is no significant correlation between the patent renewal decisions and the level of universities, the number of IPC classification numbers, the number of pages, but there is a significant correlation between the patent renewal decisions and the number of inventors, the number of claims, the period of publication and the period of examination.

Keywords

Patent, renewal time, renewaldecision, university