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The Paper Trail of Knowledge Spillovers: Evidence from Patent Interferences

Ganguli, Ina and Lin, Jeffrey and Reynolds, Nicholas (2020) 'The Paper Trail of Knowledge Spillovers: Evidence from Patent Interferences.' American Economic Journal: Applied Economics, 12 (2). pp. 278-302. ISSN 1945-7782

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We show evidence of localized knowledge spillovers using a new database of US patent interferences terminated between 1998 and 2014. Interferences resulted when two or more independent parties submitted identical claims of invention nearly simultaneously. Following the idea that inventors of identical inventions share common knowledge inputs, interferences provide a new method for measuring knowledge spillovers. Interfering inventors are 1.4 to 4.0 times more likely to live in the same local area than matched control pairs of inventors. They are also more geographically concentrated than citation-linked inventors. Our results emphasize geographic distance as a barrier to tacit knowledge flows.

Item Type: Article
Additional Information: See for supporting data
Divisions: Faculty of Social Sciences
Faculty of Social Sciences > Economics, Department of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 21 Jul 2020 14:44
Last Modified: 06 Jan 2022 14:16

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