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Spatial Inventor Networks As Studied by Patent Coinventorship

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  • Ejermo, Olof

    ()
    (CESIS - Centre of Excellence for Science and Innovation Studies, Royal Institute of Technology)

  • Karlsson, Charlie

    ()
    (CESIS - Centre of Excellence for Science and Innovation Studies, Royal Institute of Technology)

Abstract

We study the structure of the spatial inventor networks in Sweden by examining the residence of inventors and coinventors in Swedish patent applications to the European Patent Office. Several factors are found to influence the spatial affinity. We find that spatial affinity is strongly influenced by the general size of the nodes, as measured by population. In addition, affinities are strongly influenced by distance, but different technologies responded differently to distance. The most distance-sensitive technology, i.e. with the highest agglomeration of coinventors, was almost three times as sensitive to distance as the least sensitive. Interestingly, "Information technology" was the least distance-sensitive technology, which would be in line with predictions of "the death of distance". Higher affinity was also registered for many technologies when more university researchers were employed in one of the regions. Hence, a technology division is appropriate for understanding the span of innovation networks over regions, and how these could develop in response to policy initiatives.

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Bibliographic Info

Paper provided by Royal Institute of Technology, CESIS - Centre of Excellence for Science and Innovation Studies in its series Working Paper Series in Economics and Institutions of Innovation with number 17.

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Length: 58 pages
Date of creation: 29 Nov 2004
Date of revision:
Handle: RePEc:hhs:cesisp:0017

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Postal: CESIS - Centre of Excellence for Science and Innovation Studies, Royal Institute of Technology, SE-100 44 Stockholm, Sweden
Phone: +46 8 790 95 63
Web page: http://www.infra.kth.se/cesis/
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Keywords: Inventor networks; localization; patents; Sweden; affinity;

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Cited by:
  1. Christ, Julian P., 2010. "The geography and co-location of European technology-specific co-inventorship networks," FZID Discussion Papers 14-2010, University of Hohenheim, Center for Research on Innovation and Services (FZID).
  2. Martin Andersson & Olof Ejermo, 2005. "How does accessibility to knowledge sources affect the innovativeness of corporations?—evidence from Sweden," The Annals of Regional Science, Springer, vol. 39(4), pages 741-765, December.
  3. Martha Prevezer & Pietro Panzarasa & Tore Opsahl, 2010. "Geographic clustering and network evolution of innovative activities: Evidence from China’s patents," Working Papers 32, Queen Mary, University of London, School of Business and Management, Centre for Globalisation Research.

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