International Knowledge Diffusion and Home-bias Effect: Do USPTO and EPO Patent Citations Tell the Same Story?
This paper estimates the international diffusion of technical knowledge using patent citations. We control for self-citations and for procedural differences between patent offices using equivalent patents. We find that (1) there are clear biases in patent examination processes that generate citations in the two offices; (2) at the EPO there is a strong localization effect at the country level, and the size is comparable to that found at the USPTO; (3) technological fields have different properties of diffusion in the two patent offices that do not depend on a patent office bias; (4) using EPO data, the US is not the leading country in terms of citations made and received, as occurs at the USPTO. Copyright © The editors of the "Scandinavian Journal of Economics" 2010 .
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Volume (Year): 112 (2010)
Issue (Month): 3 (09)
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- Luis A. Rivera-Batiz & Paul M. Romer, 1990.
"Economic Integration and Endogenous Growth,"
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