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"Stacking" or "Picking" Patents? The Inventors' Choice Between Quantity and Quality

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  • Myriam Mariani
  • Marzia Romanelli

Abstract

This paper studies the determinants of the quantity and quality of inventorsÂ’ patents. It uses a sample of 793 inventors drawn from the PatVal-EU dataset and the information on EPO patents that they contributed to inventing during the period 1988-1998. It explores three aspects of the inventorsÂ’ productivity: 1) the number of EPO patents that they produce; 2) their average quality; 3) the quality of the most valuable patents. By jointly estimating the three equations we find that the inventorsÂ’ level of education, employment in a large firm and involvement in large-scale research projects positively affect quantity. Yet, apart from the size of the research project, none of these factors directly influences the expected quality of the innovations. They do, however, indirectly, as we find that the number of innovations explains the probability of producing a technological hit (the maximum value). Also, there are no decreasing returns in the innovation process at an individual level, as the number of innovations that an inventor produces is not correlated with their average quality.

Suggested Citation

  • Myriam Mariani & Marzia Romanelli, 2006. ""Stacking" or "Picking" Patents? The Inventors' Choice Between Quantity and Quality," LEM Papers Series 2006/06, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
    • Handle: RePEc:ssa:lemwps:2006/06
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    References listed on IDEAS

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    1. Walter Y. Oi & Todd L. Idson, 1999. "Workers Are More Productive in Large Firms," American Economic Review, American Economic Association, vol. 89(2), pages 104-108, May.
    2. Sharon M. Oster & Daniel S. Hamermesh, 1998. "Aging And Productivity Among Economists," The Review of Economics and Statistics, MIT Press, vol. 80(1), pages 154-156, February.
    3. Paola Giuri & Myriam Mariani & Stefano Brusoni & Gustavo Crespi & Dominique Francoz & Alfonso Gambardella & Walter Garcia-Fontes & Aldo Geuna & Raul Gonzales & Dietmar Harhoff & Karin Hoisl & Christia, 2005. "Everything you Always Wanted to Know about Inventors (but Never Asked): Evidence from the PatVal-EU Survey," LEM Papers Series 2005/20, Laboratory of Economics and Management (LEM), Sant'Anna School of Advanced Studies, Pisa, Italy.
    4. Manuel Trajtenberg, 1990. "A Penny for Your Quotes: Patent Citations and the Value of Innovations," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 172-187, Spring.
    5. Bronwyn H. Hall & Adam Jaffe & Manuel Trajtenberg, 2005. "Market Value and Patent Citations," RAND Journal of Economics, The RAND Corporation, vol. 36(1), pages 16-38, Spring.
    6. repec:fth:harver:1473 is not listed on IDEAS
    7. William J. Baumol, 2005. "Education for Innovation: Entrepreneurial Breakthroughs Versus Corporate Incremental Improvements," NBER Chapters, in: Innovation Policy and the Economy, Volume 5, pages 33-56, National Bureau of Economic Research, Inc.
    8. Dietmar Harhoff & Francis Narin & Frederic M. Scherer & Katrin Vopel, 1997. "Citation Frequency and the Value of Patented Innovation," CIG Working Papers FS IV 97-26, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
    9. Benjamin F. Jones, 2010. "Age and Great Invention," The Review of Economics and Statistics, MIT Press, vol. 92(1), pages 1-14, February.
    10. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2001. "The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools," NBER Working Papers 8498, National Bureau of Economic Research, Inc.
    11. Paul Almeida & Bruce Kogut, 1999. "Localization of Knowledge and the Mobility of Engineers in Regional Networks," Management Science, INFORMS, vol. 45(7), pages 905-917, July.
    12. Ernst, Holger, 1998. "Industrial research as a source of important patents," Research Policy, Elsevier, vol. 27(1), pages 1-15, May.
    13. Levin, Sharon G & Stephan, Paula E, 1991. "Research Productivity over the Life Cycle: Evidence for Academic Scientists," American Economic Review, American Economic Association, vol. 81(1), pages 114-132, March.
    14. Moore, Henry Ludwell, 1911. "Laws of Wages: An essay in statistical economics," History of Economic Thought Books, McMaster University Archive for the History of Economic Thought, number moore1911.
    15. Bronwyn Hall & Jacques Mairesse & Laure Turner, 2007. "Identifying Age, Cohort, And Period Effects In Scientific Research Productivity: Discussion And Illustration Using Simulated And Actual Data On French Physicists," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 16(2), pages 159-177.
    16. 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.
    17. Jasjit Singh, 2005. "Collaborative Networks as Determinants of Knowledge Diffusion Patterns," Management Science, INFORMS, vol. 51(5), pages 756-770, May.
    18. Harhoff, Dietmar & Reitzig, Markus, 2004. "Determinants of opposition against EPO patent grants--the case of biotechnology and pharmaceuticals," International Journal of Industrial Organization, Elsevier, vol. 22(4), pages 443-480, April.
    19. Zucker, Lynne G & Darby, Michael R & Armstrong, Jeff, 1998. "Geographically Localized Knowledge: Spillovers or Markets?," Economic Inquiry, Western Economic Association International, vol. 36(1), pages 65-86, January.
    20. Narin, Francis & Breitzman, Anthony, 1995. "Inventive productivity," Research Policy, Elsevier, vol. 24(4), pages 507-519, July.
    21. Arrow, Kenneth J., 1973. "Higher education as a filter," Journal of Public Economics, Elsevier, vol. 2(3), pages 193-216, July.
    22. F. M. Scherer, 2005. "Patents," Books, Edward Elgar Publishing, number 3903.
    23. Jean O. Lanjouw & Mark Schankerman, 2004. "Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators," Economic Journal, Royal Economic Society, vol. 114(495), pages 441-465, April.
    Full references (including those not matched with items on IDEAS)

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    Cited by:

    1. Nicolas van Zeebroeck & Bruno van Pottelsberghe de la Potterie, 2011. "Filing strategies and patent value," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 20(6), pages 539-561, February.
    2. de Rassenfosse, Gaetan & van Pottelsberghe de la Potterie, Bruno, 2009. "A policy insight into the R&D-patent relationship," Research Policy, Elsevier, vol. 38(5), pages 779-792, June.
    3. Jun, Bogang, 2013. "The Trade-off between Fertility and Education: Evidence from the Korean Development Path," MPRA Paper 43971, University Library of Munich, Germany.
    4. William Latham & Christian Le Bas & Dmitry Volodin, 2012. "Mobility, Productivity and Patent Value for Asian Prolific Inventors : China, Japan, Korea and Taiwan, 1975 - 2010," Working Papers halshs-00734980, HAL.
    5. Yannu Zheng & Olof Ejermo, 2015. "How do the foreign-born perform in inventive activity? Evidence from Sweden," Journal of Population Economics, Springer;European Society for Population Economics, vol. 28(3), pages 659-695, July.
    6. Dietmar Harhoff, 2008. "Innovation, Entrepreneurship und Demographie," Perspektiven der Wirtschaftspolitik, Verein für Socialpolitik, vol. 9(s1), pages 46-72, May.
    7. Giummo, Jesse, 2010. "German employee inventors' compensation records: A window into the returns to patented inventions," Research Policy, Elsevier, vol. 39(7), pages 969-984, September.
    8. Jung, Taehyun & Ejermo, Olof, 2014. "Demographic patterns and trends in patenting: Gender, age, and education of inventors," Technological Forecasting and Social Change, Elsevier, vol. 86(C), pages 110-124.
    9. Andrea Kunnert & Oliver Fritz & Dieter Pennerstorfer & Gerhard Streicher & Birgit Aigner & Thomas Döring, 2010. "Teilbericht 3: Alterung und regionale Wettbewerbsfähigkeit," WIFO Studies, WIFO, number 41128, March.

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