Explores the geographic localization of knowledge spillover by comparing the location of inventors of citing patents to the location of the inventors of the patents they cite. The originating patents considered were from 1975 and 1980 and included all patents granted to U.S. universities and two...

The extent to which new technological knowledge flows across institutional and national boundaries is a question of great importance for public policy and the modeling of economic growth. This paper develops a model of the process generating subsequent citations to patents as a lens for viewing...

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...