Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations
42 Pages Posted: 26 Jan 2001 Last revised: 1 Dec 2022
There are 2 versions of this paper
Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations
Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations
Date Written: February 1992
Abstract
We compare the geographic location of patent citations to those of the cited patents, as evidence of the extent to which knowledge spillovers are geographically localized. We find that citations to U.S. patents are more likely to come from the U.S., and more likely to come from the same state and SMSA as the cited patents than one would expect based only on the preexisting concentration of related research activity. These effects are particularly significant at the local (SMSA) level, and are particularly apparent in early citations.
Suggested Citation: Suggested Citation
Do you have negative results from your research you’d like to share?
Recommended Papers
-
Econometric Models for Count Data with an Application to the Patents-R&D Relationship
By Jerry A. Hausman, Bronwyn H. Hall, ...
-
Intellectual Capital and the Birth of U.S. Biotechnology Enterprises
By Lynne G. Zucker, Michael R. Darby, ...
-
Ivory Tower Versus Corporate Lab: An Empirical Study of Basic Research and Appropriability
By Manuel Trajtenberg, Rebecca M. Henderson, ...