A Generalized KPSS Measure of Patent Value

2021 ◽  
Author(s):  
Zhiqiang Dong ◽  
Yunzhi Lu ◽  
Qingxin Meng
Keyword(s):  
2021 ◽  
Vol 7 (2) ◽  
pp. 119
Author(s):  
Jung-Tae Hwang ◽  
Byung-Keun Kim ◽  
Eui-Seob Jeong

This study investigated the effect of patent value on the renewal (survival) of patents. The private value of patents can be one of the main pillars sustaining a firm’s value, and the estimation of the value may contribute to the strategic management of firms. The current study aimed to confirm the recent research findings with survival analysis, focusing on the more homogeneous patent data samples. In this study, a dataset is constructed from a cohort of 6646 patents from the 1996 and 1997 application years, using patent data from the European Patent Office (EPO). We found that the family size and non-patent backward citations exhibited profound impacts on patent survival. This result is in line with numerous studies, indicating the positive impact of science linkages in the biotechnology and pharmaceutical fields. It was also found that the effect of the ex-post indicator is not as strong as the ex-ante indicators, like traditional family size and backward citations. In short, the family size matters most for the survival of patents, according to the current research.


2008 ◽  
Vol 75 (2) ◽  
pp. 319-338 ◽  
Author(s):  
Bruno van Pottelsberghe de la Potterie ◽  
Nicolas van Zeebroeck

2019 ◽  
Vol 51 (60) ◽  
pp. 6476-6496 ◽  
Author(s):  
Francois P. Kabore ◽  
Walter G. Park

2003 ◽  
Vol 32 (1) ◽  
pp. 13-26 ◽  
Author(s):  
Markus Reitzig
Keyword(s):  

2020 ◽  
Vol 12 (1) ◽  
pp. 140-181 ◽  
Author(s):  
Josh Feng ◽  
Xavier Jaravel

We show that examiner-driven variation in patent rights leads to quantitatively large impacts on several patent outcomes, including patent value, citations, and litigation. Notably, Patent Assertion Entities (PAEs) overwhelmingly purchase patents granted by “lenient” examiners. These examiners issue patents that are more likely to be litigated by both PAEs and conventional companies, and that also have higher invalidity rates. PAEs leverage a specific friction in the patent system that stems from lenient examiners and affects litigation more broadly. These patterns indicate that there is much at stake during patent examination, contradicting the influential “rational ignorance” view of the patent office. (JEL K11, K41, O31, O34, O38)


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