Patent Citations as a Measure of Knowledge Flows: The Influence of Examiner Citations
نویسندگان
چکیده
منابع مشابه
Patent Citations as a Measure of Knowledge Flows: the Influence of Examiner Citations
Analysis of patent citations is a core methodology in the study of knowledge diffusion. However, citations made by patent examiners have not been separately reported, adding unknown noise to the data. We leverage a recent change in the reporting of patent data showing citations added by examiners. The magnitude is high: two-thirds of citations on the average patent are inserted by examiners. Fu...
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This paper investigates whether the distinction between patent citations added by the inventor or the examiner is relevant for the issue of geographical concentration of knowledge flows (as embodied in citations). The distinction between inventor and examiner citations enables us to work with a more refined citation indicator of knowledge flows. We use information in the search reports of paten...
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The use of patent citations as a measure of patent "quality" increased dramatically in recent years. I estimate the hazard of patent citation, and find evidence of unobserved heterogeneity. Hazard estimation provides a means to separate patent quality from citation "inflation." JEL: C1, O3.
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Technological innovation depends on knowledge developed by scientific research. The number of citations made in patents to the scientific literature has been suggested as an indicator of this process of transfer of knowledge from science to technology. We provide an intersectoral insight into this indicator, by breaking down patent citations into a sector-to-sector matrix of knowledge flows. We...
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ژورنال
عنوان ژورنال: Review of Economics and Statistics
سال: 2006
ISSN: 0034-6535,1530-9142
DOI: 10.1162/rest.88.4.774