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Do Patents Matter for Commercialization?

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  • Elizabeth Webster

    (Melbourne Institute of Applied Economic and Social Research, The University of Melbourne)

  • Paul H. Jensen

    (Melbourne Institute of Applied Economic and Social Research, The University of Melbourne)

Abstract

In this paper, we take another look at the role that patents play in determining successful commercialization. We address this issue using survey data on 3,736 Australian inventions which were the subject of a patent application between 1986 and 2005. Although almost half of the survey respondents' patent applications were not granted, many still attempted to commercialize their inventions. This variation in patenting and commercialization outcomes enables us to address the question: do patents matter for commercialization? Our results suggest that while the receipt of a patent grant had a positive and significant effect on most commercialization stages, the magnitude of the effect is quite modest. In fact, the marginal increase in the probability of attempting a commercialization stage due to the presence of a patent varies from 2.0 (export) to 8.0 (mass production stage) percentage points.

Suggested Citation

  • Elizabeth Webster & Paul H. Jensen, 2009. "Do Patents Matter for Commercialization?," Melbourne Institute Working Paper Series wp2009n08, Melbourne Institute of Applied Economic and Social Research, The University of Melbourne.
  • Handle: RePEc:iae:iaewps:wp2009n08
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    1. Atul Nerkar & Peter W. Roberts, 2004. "Technological and product‐market experience and the success of new product introductions in the pharmaceutical industry," Strategic Management Journal, Wiley Blackwell, vol. 25(8‐9), pages 779-799, August.
    2. Jerry R. Green & Suzanne Scotchmer, 1995. "On the Division of Profit in Sequential Innovation," RAND Journal of Economics, The RAND Corporation, vol. 26(1), pages 20-33, Spring.
    3. Bruce Kogut & Udo Zander, 1992. "Knowledge of the Firm, Combinative Capabilities, and the Replication of Technology," Organization Science, INFORMS, vol. 3(3), pages 383-397, August.
    4. Marcus Asplund & Rickard Sandin, 1999. "The Survival of New Products," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 15(3), pages 219-237, November.
    5. David J. TEECE, 2008. "Profiting from technological innovation: Implications for integration, collaboration, licensing and public policy," World Scientific Book Chapters, in: The Transfer And Licensing Of Know-How And Intellectual Property Understanding the Multinational Enterprise in the Modern World, chapter 5, pages 67-87, World Scientific Publishing Co. Pte. Ltd..
    6. 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.
    7. Arora, Ashish & Ceccagnoli, Marco & Cohen, Wesley M., 2008. "R&D and the patent premium," International Journal of Industrial Organization, Elsevier, vol. 26(5), pages 1153-1179, September.
    8. 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.
    9. Markman, Gideon D. & Gianiodis, Peter T. & Phan, Phillip H. & Balkin, David B., 2005. "Innovation speed: Transferring university technology to market," Research Policy, Elsevier, vol. 34(7), pages 1058-1075, September.
    10. G. M.P. Swann, 2009. "The Economics of Innovation," Books, Edward Elgar Publishing, number 13211.
    11. Thomas Astebro, 2003. "The Return to Independent Invention: Evidence of Risk Seeking, Extreme Optimism or Skewness-Loving," Post-Print hal-00480030, HAL.
    12. Thomas Astebro & John L. Michela, 2005. "Predictors of the Survival of Innovations," Post-Print hal-00476886, HAL.
    13. Saviotti, Pier Paolo, 1998. "On the dynamics of appropriability, of tacit and of codified knowledge," Research Policy, Elsevier, vol. 26(7-8), pages 843-856, April.
    14. Atul Nerkar & Scott Shane, 2007. "Determinants of invention commercialization: an empirical examination of academically sourced inventions," Strategic Management Journal, Wiley Blackwell, vol. 28(11), pages 1155-1166, November.
    15. Ashish Arora & Robert P. Merges, 2004. "Specialized supply firms, property rights and firm boundaries," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 13(3), pages 451-475, June.
    16. 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.
    17. 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.
    18. Lee G. Branstetter & Yoshiaki Nakamura, 2003. "Is Japan's Innovative Capacity in Decline?," NBER Chapters, in: Structural Impediments to Growth in Japan, pages 191-224, National Bureau of Economic Research, Inc.
    19. Mansfield, Edwin & Schwartz, Mark & Wagner, Samuel, 1981. "Imitation Costs and Patents: An Empirical Study," Economic Journal, Royal Economic Society, vol. 91(364), pages 907-918, December.
    20. 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.
    21. Dominique Guellec & Bruno Van Pottelsberghe De La Potterie, 2003. "The impact of public R&D expenditure on business R&D," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 12(3), pages 225-243.
    22. Charlotta Grönqvist, 2009. "The private value of patents by patent characteristics: evidence from Finland," The Journal of Technology Transfer, Springer, vol. 34(2), pages 159-168, April.
    23. 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.
    24. Sunil Kanwar & Robert Evenson, 2003. "Does intellectual property protection spur technological change?," Oxford Economic Papers, Oxford University Press, vol. 55(2), pages 235-264, April.
    25. Brent B Allred & Walter G Park, 2007. "Patent rights and innovative activity: evidence from national and firm-level data," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 38(6), pages 878-900, November.
    26. Harhoff, Dietmar & Gambardella, Alfonso & Verspagen, Bart, 2008. "The Value of European Patents," CEPR Discussion Papers 6848, C.E.P.R. Discussion Papers.
    27. Nancy T. Gallini, 2002. "The Economics of Patents: Lessons from Recent U.S. Patent Reform," Journal of Economic Perspectives, American Economic Association, vol. 16(2), pages 131-154, Spring.
    28. Harabi, Najib, 1995. "Appropriability of technical innovations an empirical analysis," Research Policy, Elsevier, vol. 24(6), pages 981-992, November.
    29. Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1987. "Appropriating the Returns from Industrial Research and Development," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(3, Specia), pages 783-832.
    30. Kanwar, Sunil, 2007. "Business enterprise R&D, technological change, and intellectual property protection," Economics Letters, Elsevier, vol. 96(1), pages 120-126, July.
    31. Arundel, Anthony & Kabla, Isabelle, 1998. "What percentage of innovations are patented? empirical estimates for European firms," Research Policy, Elsevier, vol. 27(2), pages 127-141, June.
    32. NAGAOKA Sadao & John P. WALSH, 2009. "Commercialization and Other Uses of Patents in Japan and the U.S.: Major findings from the RIETI-Georgia Tech inventor survey," Discussion papers 09011, Research Institute of Economy, Trade and Industry (RIETI).
    33. Scott Shane, 2002. "Selling University Technology: Patterns from MIT," Management Science, INFORMS, vol. 48(1), pages 122-137, January.
    34. Bizan, Oded, 2003. "The determinants of success of R&D projects: evidence from American-Israeli research alliances," Research Policy, Elsevier, vol. 32(9), pages 1619-1640, October.
    35. Petr Hanel, 2008. "The Use Of Intellectual Property Rights And Innovation By Manufacturing Firms In Canada," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 17(4), pages 285-309.
    36. Ashish Arora & Marco Ceccagnoli, 2006. "Patent Protection, Complementary Assets, and Firms' Incentives for Technology Licensing," Management Science, INFORMS, vol. 52(2), pages 293-308, February.
    37. Fabienne Orsi & Benjamin Coriat, 2005. "Are "strong patents" beneficial to innovative activities? Lessons from the genetic testing for breast cancer controversies," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 14(6), pages 1205-1221, December.
    38. 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.
    39. Deng, Yi, 2005. "Private Value of European Patents," Departmental Working Papers 0513, Southern Methodist University, Department of Economics.
    40. 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.
    41. James Bessen & Eric Maskin, 2009. "Sequential innovation, patents, and imitation," RAND Journal of Economics, RAND Corporation, vol. 40(4), pages 611-635, December.
    42. Wesley M. Cohen & Richard R. Nelson & John P. Walsh, 2000. "Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (or Not)," NBER Working Papers 7552, National Bureau of Economic Research, Inc.
    43. Giovanni Dosi & Franco Malerba & Giovanni B. Ramello & Francesco Silva, 2006. "Information, appropriability, and the generation of innovative knowledge four decades after Arrow and Nelson: an introduction," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 15(6), pages 891-901, December.
    44. Mazzoleni, Roberto & Nelson, Richard R., 1998. "The benefits and costs of strong patent protection: a contribution to the current debate," Research Policy, Elsevier, vol. 27(3), pages 273-284, July.
    45. Edwin Mansfield, 1986. "Patents and Innovation: An Empirical Study," Management Science, INFORMS, vol. 32(2), pages 173-181, February.
    46. Nerkar, Atul A. & McGrath, Rita Gunther & MacMillan, Ian C., 1996. "Three facets of satisfaction and their influence on the performance of innovation teams," Journal of Business Venturing, Elsevier, vol. 11(3), pages 167-188, May.
    47. Joshua S. Gans & David H. Hsu & Scott Stern, 2002. "When Does Start-Up Innovation Spur the Gale of Creative Destruction?," RAND Journal of Economics, The RAND Corporation, vol. 33(4), pages 571-586, Winter.
    48. Hall, Bronwyn H & Ziedonis, Rosemarie Ham, 2001. "The Patent Paradox Revisited: An Empirical Study of Patenting in the U.S. Semiconductor Industry, 1979-1995," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 101-128, Spring.
    49. Emmanuel Dechenaux & Brent Goldfarb & Scott Shane & Marie Thursby, 2008. "Appropriability and Commercialization: Evidence from MIT Inventions," Management Science, INFORMS, vol. 54(5), pages 893-906, May.
    50. Paul H. Jensen & Elizabeth Webster, 2009. "Knowledge management: does capture impede creation?," Industrial and Corporate Change, Oxford University Press and the Associazione ICC, vol. 18(4), pages 701-727, August.
    51. Amesse, Fernand & Desranleau, Claude & Etemad, Hamid & Fortier, Yves & Seguin-Dulude, Louise, 1991. "The individual inventor and the role of entrepreneurship : A survey of the Canadian evidence," Research Policy, Elsevier, vol. 20(1), pages 13-27, February.
    52. Richard R. Nelson, 1959. "The Simple Economics of Basic Scientific Research," Journal of Political Economy, University of Chicago Press, vol. 67, pages 297-297.
    53. Sakakibara, Mariko & Branstetter, Lee, 2001. "Do Stronger Patents Induce More Innovation? Evidence from the 1988 Japanese Patent Law Reforms," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 77-100, Spring.
    54. Thomas Astebro, 2003. "The Return to Independent Invention: Evidence of Unrealistic Optimism, Risk Seeking or Skewness Loving?," Economic Journal, Royal Economic Society, vol. 113(484), pages 226-239, January.
    55. Deng, Yi, 2007. "Private value of European patents," European Economic Review, Elsevier, vol. 51(7), pages 1785-1812, October.
    56. Wilde, Joachim, 2000. "Identification of multiple equation probit models with endogenous dummy regressors," Economics Letters, Elsevier, vol. 69(3), pages 309-312, December.
    57. Pisano, Gary P., 1991. "The governance of innovation: Vertical integration and collaborative arrangements in the biotechnology industry," Research Policy, Elsevier, vol. 20(3), pages 237-249, June.
    58. Jean Olson Lanjouw, 1998. "Patent Protection in the Shadow of Infringement: Simulation Estimations of Patent Value," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 65(4), pages 671-710.
    59. 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.
    60. James Bessen & Michael J. Meurer, 2008. "Do Patents Perform Like Property?," Working Papers 0801, Research on Innovation.
    61. Yi Qian, 2007. "Do National Patent Laws Stimulate Domestic Innovation in a Global Patenting Environment? A Cross-Country Analysis of Pharmaceutical Patent Protection, 1978-2002," The Review of Economics and Statistics, MIT Press, vol. 89(3), pages 436-453, August.
    62. Suzanne Scotchmer, 1991. "Standing on the Shoulders of Giants: Cumulative Research and the Patent Law," Journal of Economic Perspectives, American Economic Association, vol. 5(1), pages 29-41, Winter.
    63. Mansfield, Edwin & Wagner, Samuel, 1975. "Organizational and Strategic Factors Associated with Probabilities of Success in Industrial R & D," The Journal of Business, University of Chicago Press, vol. 48(2), pages 179-198, April.
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    3. Marek Jemala & Ľubomír Jemala, 2015. "How Are Technologies Patented in Developed and Developing Countries of EU? [Ako sú technológie patentované v rozvinutých a rozvíjajúcich sa krajinách európskej únie?]," Acta Oeconomica Pragensia, Prague University of Economics and Business, vol. 2015(1), pages 27-44.
    4. Jin, Peizhen & Mangla, Sachin Kumar & Song, Malin, 2022. "The power of innovation diffusion: How patent transfer affects urban innovation quality," Journal of Business Research, Elsevier, vol. 145(C), pages 414-425.
    5. Ahmad Barirani & Bruno Agard & Catherine Beaudry, 2013. "Discovering and assessing fields of expertise in nanomedicine: a patent co-citation network perspective," Scientometrics, Springer;Akadémiai Kiadó, vol. 94(3), pages 1111-1136, March.
    6. Gaétan de Rassenfosse & Adam B. Jaffe, 2017. "Econometric Evidence on the R&D Depreciation Rate," NBER Working Papers 23072, National Bureau of Economic Research, Inc.
    7. Bernhard Ganglmair & Imke Reimers, 2019. "Visibility of Technology and Cumulative Innovation: Evidence from Trade Secrets Laws," CRC TR 224 Discussion Paper Series crctr224_2019_119v1, University of Bonn and University of Mannheim, Germany.
    8. Peter M. Bican & Dirk Caspary & Carsten C. Guderian, 2023. "Cross-Border Dynamics of IP Modularity: International Patenting in LEDs and Lithium-Ion Secondary Battery Technology," Management International Review, Springer, vol. 63(2), pages 347-376, April.
    9. Ben Klemens, 2021. "Attributing Value to Patents and Trademarks in Complex Production Chains," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 12(2), pages 842-875, June.
    10. Capponi, Giovanna & Martinelli, Arianna & Nuvolari, Alessandro, 2022. "Breakthrough innovations and where to find them," Research Policy, Elsevier, vol. 51(1).
    11. Po-Hsuan Hsu & Hsiao-Hui Lee & Tong Zhou, 2022. "Patent Thickets, Stock Returns, and Conditional CAPM," Management Science, INFORMS, vol. 68(11), pages 8343-8367, November.
    12. Russell Thomson & Elizabeth Webster, 2012. "The Design of R & D Support Schemes for Industry," Economic Papers, The Economic Society of Australia, vol. 31(4), pages 464-477, December.
    13. Simon Wakeman, 2012. "How does obtaining intellectual property rights impact technology commercialization strategy for start-up innovators? Reconciling the effects on licensing vs. financing," ESMT Research Working Papers ESMT-12-03 (R1), ESMT European School of Management and Technology, revised 11 Jul 2012.
    14. de Rassenfosse, Gaétan & Jaffe, Adam B., 2018. "Econometric evidence on the depreciation of innovations," European Economic Review, Elsevier, vol. 101(C), pages 625-642.
    15. Rafał Wisła & Tomasz Sierotowicz, 2015. "Patent Licensing in Selected European Countries," Journal of Entrepreneurship, Management and Innovation, Fundacja Upowszechniająca Wiedzę i Naukę "Cognitione", vol. 11(3), pages 67-87.

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