@article{48784,
      recid = {48784},
      author = {Baruffaldi, Stefano, and Raffo, Julio,},
      title = {The geography of duplicated inventions : evidence from  patent citations.},
      pages = {1 online resource (pp. 1232-1245).},
      abstract = {The geography of duplicated inventions: evidence from  patent citations. Regional Studies. Innovators often claim  inventions that turn out to duplicate, at least in part,  existing ones. This paper advances the claim that for  recent and upcoming inventions, competitive incentives are  high, and localized knowledge flows increase the  probability of duplication. Therefore, over a brief period  of time the probability of duplication is higher at short  geographical distance. Conversely, the duplication of less  recent inventions is more likely at long distance as a  consequence of a lower awareness of the existence of a  technology. This claim is supported by coherent descriptive  and multivariate evidence using data on patent citation  categories from the European Patent Office (EPO).},
      url = {http://tind.wipo.int/record/48784},
}