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Issues in measuring the degree of technological specialisation with patent data

Author

Listed:
  • Nicolas van Zeebroeck
  • Bruno Van Pottelsberghe
  • Wook Han

Abstract

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.

Suggested Citation

  • Nicolas van Zeebroeck & Bruno Van Pottelsberghe & Wook Han, 2005. "Issues in measuring the degree of technological specialisation with patent data," Working Papers CEB 05-016.RS, ULB -- Universite Libre de Bruxelles.
  • Handle: RePEc:sol:wpaper:05-016
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    References listed on IDEAS

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    1. repec:fth:harver:1473 is not listed on IDEAS
    2. Zvi Griliches, 1998. "Patent Statistics as Economic Indicators: A Survey," NBER Chapters,in: R&D and Productivity: The Econometric Evidence, pages 287-343 National Bureau of Economic Research, Inc.
    3. Eleftherios Sapsalis & Bruno van Pottelsberghe de la Potterie, 2007. "The Institutional Sources Of Knowledge And The Value Of Academic Patents," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 139-157.
    4. 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.
    5. 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.
    6. 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.
    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 392-398, May/June.
    8. Sapsalis, Elefthérios & 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.
    9. Hélène Dernis & Mosahid Khan, 2004. "Triadic Patent Families Methodology," OECD Science, Technology and Industry Working Papers 2004/2, OECD Publishing.
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    Citations

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    Cited by:

    1. Archontopoulos, Eugenio & Guellec, Dominique & Stevnsborg, Niels & van Pottelsberghe de la Potterie, Bruno & van Zeebroeck, Nicolas, 2007. "When small is beautiful: Measuring the evolution and consequences of the voluminosity of patent applications at the EPO," Information Economics and Policy, Elsevier, vol. 19(2), pages 103-132, June.
    2. Valeria Costantini & Francesco Crespi & Alessandro Palma, 2014. "Policy Inducement Effects in Energy Efficiency Technologies. An Empirical Analysis on the Residential Sector," SEEDS Working Papers 1914, SEEDS, Sustainability Environmental Economics and Dynamics Studies, revised Aug 2014.
    3. Heide Fier & Andreas Pyka, 2014. "Against the one-way-street: analyzing knowledge transfer from industry to science," The Journal of Technology Transfer, Springer, vol. 39(2), pages 219-246, April.
    4. Andrea Fernández-Ribas & Philip Shapira, 2009. "Technological diversity, scientific excellence and the location of inventive activities abroad: the case of nanotechnology," The Journal of Technology Transfer, Springer, vol. 34(3), pages 286-303, June.
    5. Mafini Dosso, 2012. "Exploring the causes behind the persistence of French technological specializations," LEM Papers Series 2012/10, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
    6. Costantini, Valeria & Liberati, Paolo, 2014. "Technology transfer, institutions and development," Technological Forecasting and Social Change, Elsevier, vol. 88(C), pages 26-48.
    7. Rinaldo Evangelista & Valentina Meliciani & Antonio Vezzani, 2016. "The Distribution of Technological Activities in Europe: A Regional Perspective," JRC Working Papers JRC102435, Joint Research Centre (Seville site).
    8. Valeria Costantini & Francesco Crespi & Elena Paglialunga & Giorgia Sforna, 2018. "System Transition and Structural Change Processes in the Energy Efficiency of Residential Sector: Evidence from EU Countries," SPRU Working Paper Series 2018-03, SPRU - Science and Technology Policy Research, University of Sussex.
    9. Patrick Herron & Aashish Mehta & Cong Cao & Timothy Lenoir, 2016. "Research diversification and impact: the case of national nanoscience development," Scientometrics, Springer;Akadémiai Kiadó, vol. 109(2), pages 629-659, November.
    10. Krammer, Sorin M.S., 2016. "The role of diversification profiles and dyadic characteristics in the formation of technological alliances: Differences between exploitation and exploration in a low-tech industry," Research Policy, Elsevier, vol. 45(2), pages 517-532.
    11. Costantini, Valeria & Crespi, Francesco & Palma, Alessandro, 2017. "Characterizing the policy mix and its impact on eco-innovation: A patent analysis of energy-efficient technologies," Research Policy, Elsevier, vol. 46(4), pages 799-819.
    12. Nicolas van Zeebroeck, 2009. "Filing strategies and the increasing duration of patent applications," Working Papers CEB 09-005.RS, ULB -- Universite Libre de Bruxelles.
    13. Ana Urraca Ruiz & C. Frederico Rocha, 2011. "On the relations between technological opportunity, specialization and growth," Working Papers 13-2011, Universidade de São Paulo, Faculdade de Economia, Administração e Contabilidade de Ribeirão Preto.
    14. van Zeebroeck, Nicolas & van Pottelsberghe de la Potterie, Bruno & Guellec, Dominique, 2009. "Claiming more: the Increased Voluminosity of Patent Applications and its Determinants," Research Policy, Elsevier, vol. 38(6), pages 1006-1020, July.
    15. Urraca-Ruiz, Ana, 2013. "The ‘technological’ dimension of structural change under market integration," Structural Change and Economic Dynamics, Elsevier, vol. 27(C), pages 1-18.
    16. Caviggioli, Federico, 2016. "Technology fusion: Identification and analysis of the drivers of technology convergence using patent data," Technovation, Elsevier, vol. 55, pages 22-32.
    17. Valeria Costantini & Francesco Crespi & Alessandro Palma, 2015. "Characterizing the policy mix and its impact on eco-innovation in energy-efficient technologies," SEEDS Working Papers 1115, SEEDS, Sustainability Environmental Economics and Dynamics Studies, revised Jun 2015.
    18. Jérôme Danguy, 2014. "Globalization of Innovation Production: A Patent-Based Industry Analysis," iCite Working Papers 2014-009, ULB -- Universite Libre de Bruxelles.

    More about this item

    Keywords

    Technological specialisation; patent data; patents statistics;

    JEL classification:

    • L16 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure
    • O57 - Economic Development, Innovation, Technological Change, and Growth - - Economywide Country Studies - - - Comparative Studies of Countries

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