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| Author: | Bacchiocchi, E. Montobbio, F. |
| Title: | International knowledge diffusion and home-bias effect: do USPTO and EPO patent citations tell the same story? |
| Journal: | Scandinavian Journal of Economics
2010 : SEP, VOL 112:3 p. 441-470 |
| Index terms: | patents bias inventions |
| Freeterms: | intellectual property prejudice |
| Language: | eng |
| Abstract: | This paper estimates the international diffusion of technical knowledge with the help of patent citations. Controlling is made for self-citations and for procedural variations between patent offices using equivalent patents. We find that (1) there are explicit biases in patent examination processes generating citations in the two offices; (2) at the EPO there is a strong localization impact at the country level, its size being comparable to that found at the USPTO; (3) technological fields have diverse properties of diffusion in the two patent offices which do not depend on a patent office bias; (4) using EPO data, the US is not the leading country measured by citations made and received, as is the case at the USPTO. |
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