relation: http://eprints.imtlucca.it/1654/
title: Networks of innovators within and across borders. Evidence from patent data
creator: Morescalchi, Andrea
creator: Pammolli, Fabio
creator: Penner, Orion
creator: Petersen, Alexander M.
creator: Riccaboni, Massimo
subject: HB Economic Theory
description: Recent studies on the geography of knowledge networks have documented a negative impact of physical distance and institutional borders upon research and development (R&D) collaborations. Though it is widely recognized that geographic constraints hamper the diffusion of knowledge,  less attention has been devoted to the temporal evolution of these constraints. In this study we use data on patents filed with the European Patent Office (EPO) for 50 countries to analyze the impact of physical distance and country borders on inter-regional links in four different networks over the period 1988-2009: (1) co-inventorship, (2) patent citations, (3) inventor mobility and (4)  the location of R&D laboratories. We find the constraint imposed by country borders and distance decreased until mid-1990s then started to grow, particularly for distance. The intensity of European cross-country inventor collaborations increased at a higher pace than their non-European counterparts until 2004, with no significant relative progress afterwards. Moreover, when analyzing  networks of geographical mobility, multinational R&D activities and patent citations we do not depict any substantial progress in European research integration aside from the influence of common global trends.
publisher: IMT Institute for Advanced Studies Lucca
date: 2013-07
type: Working Paper
type: NonPeerReviewed
format: application/pdf
language: en
identifier: http://eprints.imtlucca.it/1654/1/EIC_WP_4_2013.pdf
identifier:   Morescalchi, Andrea and Pammolli, Fabio and Penner, Orion and Petersen, Alexander M. and Riccaboni, Massimo  Networks of innovators within and across borders. Evidence from patent data.  EIC working paper series  #4/2013    IMT Institute for Advanced Studies Lucca    ISSN 2279-6894.