IDEAS home Printed from https://ideas.repec.org/p/ulb/ulbeco/2013-60729.html
   My bibliography  Save this paper

The Puzzle of Patent Value Indicators

Author

Listed:
  • Nicolas van Zeebroeck

Abstract

Given the growing size of patent databases and portfolios, scholars and practitioners alike need metrics to help them in weighting patent counts or in ranking patents to focus on the most important ones. The main objective of this paper is to help them in this task with a practical and replicable approach. The discriminating criterion chosen is the potential market for the patented invention and the approach uses five different patent features (forward citations, grant decisions, families, renewals, and oppositions) that (1) have been found positively correlated with the value of patents in the literature, (2) can be extracted from patent databases, and (3) could inform on the existence of a potential market for the invention. The paper therefore discusses the main methodological issues in measuring and interpreting these metrics over a large international dataset and proposes one approach to extract from the different measures a consistent score that can be used to weight or rank patents.

Suggested Citation

  • Nicolas van Zeebroeck, 2011. "The Puzzle of Patent Value Indicators," ULB Institutional Repository 2013/60729, ULB -- Universite Libre de Bruxelles.
  • Handle: RePEc:ulb:ulbeco:2013/60729
    Note: SCOPUS: ar.j
    as

    Download full text from publisher

    To our knowledge, this item is not available for download. To find whether it is available, there are three options:
    1. Check below whether another version of this item is available online.
    2. Check on the provider's web page whether it is in fact available.
    3. Perform a search for a similarly titled item that would be available.

    Other versions of this item:

    References listed on IDEAS

    as
    1. Lanjouw, Jean O & Schankerman, Mark, 2001. "Characteristics of Patent Litigation: A Window on Competition," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 129-151, Spring.
    2. Cockburn, Iain & Griliches, Zvi, 1988. "Industry Effects and Appropriability Measures in the Stock Market's Valuation of R&D and Patents," American Economic Review, American Economic Association, vol. 78(2), pages 419-423, May.
    3. Mario Calderini & Giuseppe Scellato, 2004. "Intellectual property rights as strategic assets: the case of european patent opposition in the telecommunication industry," KITeS Working Papers 158, KITeS, Centre for Knowledge, Internationalization and Technology Studies, Universita' Bocconi, Milano, Italy, revised Jul 2004.
    4. Christine Greenhalgh & Padraig Dixon, 2002. "The Economics of Intellectual Property: A Review to Identify Themes for Future Research," Economics Series Working Papers 135, University of Oxford, Department of Economics.
    5. Allison, John R. & Lemley, Mark & Moore, Kimberly A. & Trunkey, Derek, 2003. "Valuable Patents," Berkeley Olin Program in Law & Economics, Working Paper Series qt1m16k7w3, Berkeley Olin Program in Law & Economics.
    6. 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.
    7. 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.
    8. Christine Greenhalgh & Mark Rogers, 2007. "The value of intellectual property rights to firms and society," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 23(4), pages 541-567, Winter.
    9. 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.
    10. 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.
    11. Silverberg, Gerald & Verspagen, Bart, 2007. "The size distribution of innovations revisited: An application of extreme value statistics to citation and value measures of patent significance," Journal of Econometrics, Elsevier, vol. 139(2), pages 318-339, August.
    12. Graham, Stuart J. H. & Hall, Bronwyn H. & Harhoff, Dietmar & Mowery, David C., 2002. "Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-Examinations and European Patent Oppositions," Department of Economics, Working Paper Series qt2qt097bd, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
    13. Adam B. Jaffe & Manuel Trajtenberg, 2005. "Patents, Citations, and Innovations: A Window on the Knowledge Economy," MIT Press Books, The MIT Press, edition 1, volume 1, number 026260065x, December.
    14. 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.
    15. William E. Griffiths & Paul H. Jensen & Elizabeth Webster, 2005. "The Effects on Firm Profits of the Stock of Intellectual Property Rights," Melbourne Institute Working Paper Series wp2005n04, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
    16. Bronwyn H. Hall & Stuart Graham & Dietmar Harhoff & David C. Mowery, 2004. "Prospects for Improving US Patent Quality via Postgrant Opposition," NBER Chapters, in: Innovation Policy and the Economy, Volume 4, pages 115-144, National Bureau of Economic Research, Inc.
    17. Hagedoorn, John & Cloodt, Myriam, 2003. "Measuring innovative performance: is there an advantage in using multiple indicators?," Research Policy, Elsevier, vol. 32(8), pages 1365-1379, September.
    18. Stefan Wagner, 2008. "Business Method Patents In Europe And Their Strategic Use—Evidence From Franking Device Manufacturers," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 17(3), pages 173-194.
    19. Bruno Van Pottelsberghe & Eleftherios Sapsalis & Ran Navon, 2006. "Academic vs. industry patenting: an in-depth analysis of what determines patent value," ULB Institutional Repository 2013/6197, ULB -- Universite Libre de Bruxelles.
    20. Alfred Kleinknecht & Kees Van Montfort & Erik Brouwer, 2002. "The Non-Trivial Choice between Innovation Indicators," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 11(2), pages 109-121.
    21. 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.
    22. Jean O. Lanjouw & Mark Schankerman, 1997. "Stylized Facts of Patent Litigation: Value, Scope and Ownership," NBER Working Papers 6297, National Bureau of Economic Research, Inc.
    23. Dominique Guellec & Bruno Van Pottelsberghe de la Potterie, 2002. "The Value of Patents and Patenting Strategies: Countries and Technology Areas Patterns," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 11(2), pages 133-148.
    24. Schettino, Francesco & Sterlacchini, Alessandro & Venturini, Francesco, 2013. "Inventive productivity and patent quality: Evidence from Italian inventors," Journal of Policy Modeling, Elsevier, vol. 35(6), pages 1043-1056.
    25. Zvi Griliches, 1984. "Market Value, R&D, and Patents," NBER Chapters, in: R&D, Patents, and Productivity, pages 249-252, National Bureau of Economic Research, Inc.
    26. Guellec, Dominique & Pottelsberghe de la Potterie, Bruno v., 2000. "Applications, grants and the value of patent," Economics Letters, Elsevier, vol. 69(1), pages 109-114, October.
    27. Alfons Palangkaraya & Paul H. Jensen & Elizabeth Webster, 2005. "Determinants of International Patent Examination Outcomes," Melbourne Institute Working Paper Series wp2005n06, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
    28. 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.
    29. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2000. "Market Value and Patent Citations: A First Look," NBER Working Papers 7741, National Bureau of Economic Research, Inc.
    30. Blind, Knut & Cremers, Katrin & Mueller, Elisabeth, 2009. "The influence of strategic patenting on companies' patent portfolios," Research Policy, Elsevier, vol. 38(2), pages 428-436, March.
    31. Deng, Yi, 2005. "Renewal Study of European Patents: A Three-country Comparison," Departmental Working Papers 0514, Southern Methodist University, Department of Economics.
    32. Albert, M. B. & Avery, D. & Narin, F. & McAllister, P., 1991. "Direct validation of citation counts as indicators of industrially important patents," Research Policy, Elsevier, vol. 20(3), pages 251-259, June.
    33. Deepak Hegde & David C. Mowery & Stuart Graham, 2007. "Pioneers, Submariners, or Thicket-builders: Which Firms Use Continuations in Patenting?," NBER Working Papers 13153, National Bureau of Economic Research, Inc.
    34. Derek Bosworth & Mark Rogers, 2001. "Market Value, R&D and Intellectual Property: An Empirical Analysis of Large Australian Firms," The Economic Record, The Economic Society of Australia, vol. 77(239), pages 323-337, December.
    35. Jean O. Lanjouw & Ariel Pakes & Jonathan Putnam, 1998. "How to Count Patents and Value Intellectual Property: The Uses of Patent Renewal and Application Data," Journal of Industrial Economics, Wiley Blackwell, vol. 46(4), pages 405-432, December.
    36. Dietmar Harhoff & Francis Narin & F. M. Scherer & Katrin Vopel, 1999. "Citation Frequency And The Value Of Patented Inventions," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 511-515, August.
    37. Harhoff, Dietmar & Scherer, Frederic M. & Vopel, Katrin, 2003. "Citations, family size, opposition and the value of patent rights," Research Policy, Elsevier, vol. 32(8), pages 1343-1363, September.
    38. Pakes, Ariel & Schankerman, Mark A., 1978. "The Rate of Obsolescence of Knowledge, Research Gestation Labs, and the Private Rate of Return to Research Resources," Working Papers 78-13, C.V. Starr Center for Applied Economics, New York University.
    39. Scott Shane, 2001. "Technological Opportunities and New Firm Creation," Management Science, INFORMS, vol. 47(2), pages 205-220, February.
    40. Scherer, F. M. & Harhoff, Dietmar, 2000. "Technology policy for a world of skew-distributed outcomes," Research Policy, Elsevier, vol. 29(4-5), pages 559-566, April.
    41. Dominique Guellec & Bruno Van Pottelsberghe & Nicolas van Zeebroeck, 2007. "Patent as a market instrument," ULB Institutional Repository 2013/60728, ULB -- Universite Libre de Bruxelles.
    42. Bronwyn H. Hall, 1999. "Innovation and Market Value," Finance 9902009, University Library of Munich, Germany.
    43. Narin, Francis & Noma, Elliot & Perry, Ross, 1987. "Patents as indicators of corporate technological strength," Research Policy, Elsevier, vol. 16(2-4), pages 143-155, August.
    44. Ariel Pakes & Mark Schankerman, 1984. "The Rate of Obsolescence of Patents, Research Gestation Lags, and the Private Rate of Return to Research Resources," NBER Chapters, in: R&D, Patents, and Productivity, pages 73-88, National Bureau of Economic Research, Inc.
    45. Alexander Jerak & Stefan Wagner, 2006. "Modeling probabilities of patent oppositions in a Bayesian semiparametric regression framework," Empirical Economics, Springer, vol. 31(2), pages 513-533, June.
    46. Paul H. Jensen & Elizabeth Webster, 2004. "Examining Biases in Measures of Firm Innovation," Melbourne Institute Working Paper Series wp2004n10, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
    47. Graham, Stuart J.H. & Harhoff, Dietmar, 2006. "Can Post-Grant Reviews Improve Patent System Design? A Twin Study of US and European Patents," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 38, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
    48. Dominique Guellec & Bruno Van Pottelsberghe, 2004. "Measuring the globalisation of technology: An approach based on patent data," Working Papers CEB 04-013.RS, ULB -- Universite Libre de Bruxelles.
    49. Paul H. Jensen & Alfons Palangkaraya & Elizabeth Webster, 2005. "Patent Application Outcomes across the Trilateral Patent Offices," Melbourne Institute Working Paper Series wp2005n05, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
    50. Carpenter, Mark P. & Narin, Francis, 1983. "Validation study: Patent citations as indicators of science and foreign dependence," World Patent Information, Elsevier, vol. 5(3), pages 180-185.
    51. Morton I. Kamien & Yair Tauman, 1986. "Fees Versus Royalties and the Private Value of a Patent," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 101(3), pages 471-491.
    52. Francesca Cornelli & Mark Schankerman, 1999. "Patent Renewals and R&D Incentives," RAND Journal of Economics, The RAND Corporation, vol. 30(2), pages 197-213, Summer.
    53. Hall, Bronwyn H. & MacGarvie, Megan, 2010. "The private value of software patents," Research Policy, Elsevier, vol. 39(7), pages 994-1009, September.
    54. Lanjouw, Jean O & Pakes, Ariel & Putnam, Jonathan, 1998. "How to Count Patents and Value Intellectual Property: The Uses of Patent Renewal and Application Data," Journal of Industrial Economics, Wiley Blackwell, vol. 46(4), pages 405-432, December.
    55. Carpenter, Mark P. & Narin, Francis & Woolf, Patricia, 1981. "Citation rates to technologically important patents," World Patent Information, Elsevier, vol. 3(4), pages 160-163, October.
    56. Ariel Pakes & Margaret Simpson, 1989. "Patent Renewal Data," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 20(1989 Micr), pages 331-410.
    57. Pakes, Ariel S, 1986. "Patents as Options: Some Estimates of the Value of Holding European Patent Stocks," Econometrica, Econometric Society, vol. 54(4), pages 755-784, July.
    58. Christine Greenhalgh & Mark Rogers, 2007. "The Value of Intellectual Property Rights to Firms," Economics Series Working Papers 319, University of Oxford, Department of Economics.
    59. 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.
    60. Jean Olson Lanjouw, 1993. "Patent Protection: Of What Value and for How Long?," NBER Working Papers 4475, National Bureau of Economic Research, Inc.
    61. Ted O'Donoghue & Suzanne Scotchmer & Jacques‐François Thisse, 1998. "Patent Breadth, Patent Life, and the Pace of Technological Progress," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 7(1), pages 1-32, March.
    62. Schneider, Cédric, 2007. "The Determinants of Patent Applications Outcomes - Does Experience Matter?," MPRA Paper 3359, University Library of Munich, Germany.
    63. Guellec, Dominique & van Pottelsberghe de la Potterie, Bruno, 2007. "The Economics of the European Patent System: IP Policy for Innovation and Competition," OUP Catalogue, Oxford University Press, number 9780199216987.
    64. Joshua Lerner, 1994. "The Importance of Patent Scope: An Empirical Analysis," RAND Journal of Economics, The RAND Corporation, vol. 25(2), pages 319-333, Summer.
    65. Greenhalgh, Christine & Rogers, Mark, 2006. "The value of innovation: The interaction of competition, R&D and IP," Research Policy, Elsevier, vol. 35(4), pages 562-580, May.
    66. Jean O. Lanjouw & Mark Schankerman, 1999. "The Quality of Ideas: Measuring Innovation with Multiple Indicators," NBER Working Papers 7345, National Bureau of Economic Research, Inc.
    67. Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January.
    68. Shane, Hilary & Klock, Mark, 1997. "The Relation between Patent Citations and Tobin's Q in the Semiconductor Industry," Review of Quantitative Finance and Accounting, Springer, vol. 9(2), pages 131-146, September.
    69. Bosworth, Derek & Rogers, Mark, 2001. "Market Value, R&D and Intellectual Property: An Empirical Analysis of Large Australian Firms," The Economic Record, The Economic Society of Australia, vol. 77(239), pages 323-337, December.
    70. Nicolas van Zeebroeck, 2007. "Patents only live twice: a patent survival analysis in Europe," Working Papers CEB 07-028.RS, ULB -- Universite Libre de Bruxelles.
    71. Zvi Griliches & Ariel Pakes & Bronwyn H. Hall, 1986. "The Value of Patents as Indicators of Inventive Activity," NBER Working Papers 2083, National Bureau of Economic Research, Inc.
    72. Kleinknecht, Alfred & Montfort, Kees van & Brouwer, Erik, 2000. "How consistent are innovation indicators? : a factor analysis of CIS data," Serie Research Memoranda 0028, VU University Amsterdam, Faculty of Economics, Business Administration and Econometrics.
    73. Mark Schankerman, 1998. "How Valuable is Patent Protection? Estimates by Technology Field," RAND Journal of Economics, The RAND Corporation, vol. 29(1), pages 77-107, Spring.
    74. Reitzig, Markus, 2003. "What determines patent value?: Insights from the semiconductor industry," Research Policy, Elsevier, vol. 32(1), pages 13-26, January.
    75. Nicholas Bloom & John Van Reenen, 2002. "Patents, Real Options and Firm Performance," Economic Journal, Royal Economic Society, vol. 112(478), pages 97-116, March.
    76. 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.
    77. Cremers, Katrin, 2004. "Determinants of Patent Litigation in Germany," ZEW Discussion Papers 04-72, ZEW - Leibniz Centre for European Economic Research.
    78. Sapsalis, Eleftherios & van Pottelsberghe de la Potterie, Bruno & Navon, Ran, 2006. "Academic versus industry patenting: An in-depth analysis of what determines patent value," Research Policy, Elsevier, vol. 35(10), pages 1631-1645, December.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Nicolas van Zeebroeck, 2007. "Patents only live twice: a patent survival analysis in Europe," Working Papers CEB 07-028.RS, ULB -- Universite Libre de Bruxelles.
    2. 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.
    3. Nicolas van Zeebroeck, 2009. "From patent renewals to applications survival: do portfolio management strategies play a role in patent length?," Working Papers CEB 09-028.RS, ULB -- Universite Libre de Bruxelles.
    4. Bruno Pottelsberghe de la Potterie & Nicolas Zeebroeck, 2008. "A brief history of space and time: The scope-year index as a patent value indicator based on families and renewals," Scientometrics, Springer;Akadémiai Kiadó, vol. 75(2), pages 319-338, May.
    5. Appio, Francesco Paolo & Baglieri, Daniela & Cesaroni, Fabrizio & Spicuzza, Lucia & Donato, Alessia, 2022. "Patent design strategies: Empirical evidence from European patents," Technological Forecasting and Social Change, Elsevier, vol. 181(C).
    6. Higham, Kyle & de Rassenfosse, Gaétan & Jaffe, Adam B., 2021. "Patent Quality: Towards a Systematic Framework for Analysis and Measurement," Research Policy, Elsevier, vol. 50(4).
    7. Leila Tahmooresnejad & Catherine Beaudry, 2019. "Capturing the economic value of triadic patents," Scientometrics, Springer;Akadémiai Kiadó, vol. 118(1), pages 127-157, January.
    8. Antoine Dechezleprêtre & Yann Ménière & Myra Mohnen, 2017. "International patent families: from application strategies to statistical indicators," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(2), pages 793-828, May.
    9. Manuel Acosta & Daniel Coronado & Esther Ferrándiz & Manuel Jiménez, 2022. "Effects of knowledge spillovers between competitors on patent quality: what patent citations reveal about a global duopoly," The Journal of Technology Transfer, Springer, vol. 47(5), pages 1451-1487, October.
    10. Nicolas van Zeebroeck, 2011. "Long Live Patents: the Increasing Life Expectancy of Patent Applications and its Determinants," Review of Economics and Institutions, Università di Perugia, vol. 2(3).
    11. Eun Han & So Sohn, 2015. "Patent valuation based on text mining and survival analysis," The Journal of Technology Transfer, Springer, vol. 40(5), pages 821-839, October.
    12. Jungpyo Lee & So Young Sohn, 2017. "What makes the first forward citation of a patent occur earlier?," Scientometrics, Springer;Akadémiai Kiadó, vol. 113(1), pages 279-298, October.
    13. Nils Omland, 2011. "Valuing Patents through Indicators," Chapters, in: Federico Munari & Raffaele Oriani (ed.), The Economic Valuation of Patents, chapter 7, Edward Elgar Publishing.
    14. Federico Munari & Maurizio Sobrero, 2011. "Economic and Management Perspectives on the Value of Patents," Chapters, in: Federico Munari & Raffaele Oriani (ed.), The Economic Valuation of Patents, chapter 3, Edward Elgar Publishing.
    15. Rockett, Katharine, 2010. "Property Rights and Invention," Handbook of the Economics of Innovation, in: Bronwyn H. Hall & Nathan Rosenberg (ed.), Handbook of the Economics of Innovation, edition 1, volume 1, chapter 0, pages 315-380, Elsevier.
    16. Bessen, James, 2009. "Estimates of patent rents from firm market value," Research Policy, Elsevier, vol. 38(10), pages 1604-1616, December.
    17. Grimaldi, Michele & Cricelli, Livio & Di Giovanni, Martina & Rogo, Francesco, 2015. "The patent portfolio value analysis: A new framework to leverage patent information for strategic technology planning," Technological Forecasting and Social Change, Elsevier, vol. 94(C), pages 286-302.
    18. Reitzig, Markus, 2004. "Improving patent valuations for management purposes--validating new indicators by analyzing application rationales," Research Policy, Elsevier, vol. 33(6-7), pages 939-957, September.
    19. Sapsalis, Eleftherios & van Pottelsberghe de la Potterie, Bruno & Navon, Ran, 2006. "Academic versus industry patenting: An in-depth analysis of what determines patent value," Research Policy, Elsevier, vol. 35(10), pages 1631-1645, December.
    20. repec:sol:wpaper:08-041 is not listed on IDEAS
    21. 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.

    More about this item

    JEL classification:

    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital
    • O50 - Economic Development, Innovation, Technological Change, and Growth - - Economywide Country Studies - - - General

    NEP fields

    This paper has been announced in the following NEP Reports:

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:ulb:ulbeco:2013/60729. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Benoit Pauwels (email available below). General contact details of provider: https://edirc.repec.org/data/ecsulbe.html .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.