Patent Citations and the Geography of Knowledge Spillovers: Evidence from Inventor- and Examiner-added Citations
Patent Citations and the Geography of Knowledge Spillovers: Evidence from Inventor- and Examiner-added Citations
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专利引用和知识溢出的地理分布：来自发明人和审查员添加的引用的证据
DOI：
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发表时间：
2006
影响因子：
8
通讯作者：
P. Thompson
中科院分区：
文献类型：
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作者：
P. Thompson
我报告了本地化知识溢出的新证据，该证据是通过发明人添加的引用和审查员添加的引用的地理匹配率的专利内差异来识别的。根据平均引用滞后进行评估，发明人引用与其引用专利的原产国相匹配的可能性比审查员引用高 20%，而美国发明人引用与其引用专利的州或大都市区相匹配的可能性高 25%。国内知识溢出的本地化随着时间的推移而减弱，但国际边界对溢出构成了持续的障碍。
I report new evidence for localized knowledge spillovers identified by within-patent variations in the geographic matching rates of citations added by inventors and citations added by examiners. Evaluated at the mean citation lag, inventor citations are 20% more likely than examiner citations to match the country of origin of their citing patent, whereas U.S. inventor citations are 25% more likely to match the state or metropolitan area of their citing patent. The localization of intranational knowledge spillovers declines with the passage of time, but international borders present a persistent barrier to spillovers.
DOI：
10.3386/w13338
发表时间：
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期刊：
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影响因子：
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作者：
Griffith R
通讯作者：
Griffith R