Title: Uses without too many abuses of patent citations or the simple economics of patent citations as a measure of value and flows of knowledge*
Abstract: Click to increase image sizeClick to decrease image size Acknowledgements We thank the referees for their useful assistance. Notes *This opening paper has been specifically written in the memory of Keith Pavitt who was a leader in this field of research (see Pavitt, Citation1988). 1The arrival of better quality data and the higher capacity to access it (Michel and Bettels, Citation2001) has enabled the use patent citation at a larger extent. The best example is the database of US patent accessible on internet work out by Jaffe and his colleague from the NBER. 2We do not come back to the main limit of patent citation which comes from the fact that we do not know who has put the citation, the applicant or the examiner. Jaffe et al. Citation(2000) argue 50% of the citations match flows of knowledge spillovers. 3We ignored the fact that patent citations are just as limited as patents as an indicator of innovation. It is impossible to assess the value of invention with patent citations for inventions not protected by patent. The other problem is that we are able to trace the knowledge origin of invention only for this kind of new knowledge for which patents are a relevant means of appropriabilty. This entails it should be difficult to obtain the overall map of knowledge flows for all the national system of innovation.
Publication Year: 2005
Publication Date: 2005-07-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 40
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