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Issues in measuring the degree of technological specialisation with patent data

  • Nicolas van Zeebroeck
  • Bruno Van Pottelsberghe
  • Wook Han

This paper analyses several issues that arise when measuring technological specialisation with patent data. Three starting choices are required regarding the data source, the statistical measure and the sectoral aggregation level. We show that the measure is highly sensitive to the data source and to the level of sectoral aggregation. The statistical analysis further suggests that the most stable and reliable measures of technological specialization are obtained with patents applied at the EPO, with Gini or C20 as statistical measure and the 4-digits aggregation level of the IPC classification system.

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Paper provided by ULB -- Universite Libre de Bruxelles in its series ULB Institutional Repository with number 2013/6199.

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Date of creation: 2006
Date of revision:
Publication status: Published in: Scientometrics (2006) v.66 n° 3,p.481-492
Handle: RePEc:ulb:ulbeco:2013/6199
Contact details of provider: Postal: CP135, 50, avenue F.D. Roosevelt, 1050 Bruxelles
Web page: http://difusion.ulb.ac.be

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  1. Bruno Van Pottelsberghe & Dominique Guellec, 2004. "Measuring the internationalisation of the generation of knowledge: an approach based on patent data," ULB Institutional Repository 2013/6269, ULB -- Universite Libre de Bruxelles.
  2. repec:fth:harver:1473 is not listed on IDEAS
  3. Griliches, Zvi, 1990. "Patent Statistics as Economic Indicators: A Survey," Journal of Economic Literature, American Economic Association, vol. 28(4), pages 1661-1707, December.
  4. Bruno Van Pottelsberghe & Eleftherios Sapsalis, 2007. "The institutional sources of knowledge and the value of academic patents," ULB Institutional Repository 2013/6195, ULB -- Universite Libre de Bruxelles.
  5. Sapsalis, Elefth駻ios & Pottelsberghe de la Potterie, Bruno van, 2003. "The Sources of Knowledge and the Value of Academic Patents," IIR Working Paper 03-24, Institute of Innovation Research, Hitotsubashi University.
  6. Hélène Dernis & Mosahid Khan, 2004. "Triadic Patent Families Methodology," OECD Science, Technology and Industry Working Papers 2004/2, OECD Publishing.
  7. Comanor, William S & Scherer, Frederic M, 1969. "Patent Statistics as a Measure of Technical Change," Journal of Political Economy, University of Chicago Press, vol. 77(3), pages 392-98, May/June.
  8. Basberg, Bjorn L., 1987. "Patents and the measurement of technological change: A survey of the literature," Research Policy, Elsevier, vol. 16(2-4), pages 131-141, August.
  9. Bruno Van Pottelsberghe & Herman Denis & Dominique Guellec, 2001. "Using patent counts for cross-country comparisons of technology output," ULB Institutional Repository 2013/6227, ULB -- Universite Libre de Bruxelles.
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