The influence of strategic patenting on companies' patent portfolios

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The influence of strategic patenting on companies' patent portfolios

Author Info

Blind, Knut
Cremers, Katrin
Mueller, Elisabeth

Additional information is available for the following registered author(s):

Elisabeth Mueller

Abstract

This paper analyses whether strategic motives for patenting influence the characteristics of companies' patent portfolios. We use the number of citations and oppositions to represent these characteristics. The analysis is based on survey data from German companies, which are combined with EPO data covering applications from 1991 to 2000. We find clear evidence that the companies' patenting strategies are related to the characteristics of their patent portfolios. First, companies using patents in the traditional way to protect their technological knowledge base receive a higher number of forward citations for their patents. Second, the motive of offensive - but not of defensive - blocking is related to a higher incidence of oppositions, whereas companies using patents as bartering chips in collaborations receive fewer citations and fewer oppositions to their patents.

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Article provided by Elsevier in its journal Research Policy.

Volume (Year): 38 (2009)
Issue (Month): 2 (March)
Pages: 428-436
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Handle: RePEc:eee:respol:v:38:y:2009:i:2:p:428-436

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Paper
- Blind, Knut & Cremers, Katrin & Mueller, Elisabeth, 2007. "The Influence of Strategic Patenting on Companies? Patent Portfolios," ZEW Discussion Papers 07-013, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research. [Downloadable!]

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

Stuart J. H. Graham & Bronwyn H. Hall & Dietmar Harhoff & David C. Mowery, 2003. "Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-examinations and European Patent Oppositions," Industrial Organization 0303009, EconWPA. [Downloadable!]
Other versions:
- Stuart Graham & Bronwyn Hall & Dietmar Harhoff & David Mowery, 2002. "Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-examinations and European Patent Oppositions," Department of Economics, Working Paper Series 1046, Department of Economics, Institute for Business and Economic Research, UC Berkeley. [Downloadable!]
- Stuart J. H. Graham & Bronwyn H. Hall & Dietmar Harhoff & David C. Mowery, 2002. "Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-examinations and European Patent Oppositions," NBER Working Papers 8807, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
Carl Shapiro, 2003. "Antitrust Limits to Patent Settlements," Law and Economics 0303004, EconWPA. [Downloadable!]
Other versions:
- Carl Shapiro, 2001. "Antitrust Limits to Patent Settlements," Competition Policy Center, Working Paper Series CPC01-18, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley. [Downloadable!]
- Shapiro, Carl, 2003. " Antitrust Limits to Patent Settlements," RAND Journal of Economics, The RAND Corporation, vol. 34(2), pages 391-411, Summer.
Arundel, Anthony, 2001. "The relative effectiveness of patents and secrecy for appropriation," Research Policy, Elsevier, vol. 30(4), pages 611-624, April. [Downloadable!] (restricted)
Blind, Knut & Edler, Jakob & Frietsch, Rainer & Schmoch, Ulrich, 2006. "Motives to patent: Empirical evidence from Germany," Research Policy, Elsevier, vol. 35(5), pages 655-672, June. [Downloadable!] (restricted)
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, 04. [Downloadable!] (restricted)
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. [Downloadable!] (restricted)
Jaffe, Adam B., 2000. "The U.S. patent system in transition: policy innovation and the innovation process," Research Policy, Elsevier, vol. 29(4-5), pages 531-557, April. [Downloadable!] (restricted)
Other versions:
- Adam B. Jaffe, 1999. "The U.S. Patent System in Transition: Policy Innovation and the Innovation Process," NBER Working Papers 7280, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
Hussinger, Katrin, 2004. "Is Silence Golden? : Patents versus Secrecy at the Firm Level," ZEW Discussion Papers 04-78, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research. [Downloadable!]
Other versions:
- Kartin Hussinger, 2005. "Is Silence Golden? Patents versus Secrecy at the Firm Level," Discussion Papers 37, SFB/TR 15 Governance and the Efficiency of Economic Systems, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich. [Downloadable!]
- Katrin Hussinger, 2006. "Is Silence Golden? Patents Versus Secrecy At The Firm Level," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 15(8), pages 735-752, November. [Downloadable!] (restricted)
Harhoff, Dietmar & Reitzig, Markus, 2002. "Determinants of Opposition Against EPO Patent Grants - The Case of Biotechnology and Pharmaceuticals," CEPR Discussion Papers 3645, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
Other versions:
- 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. [Downloadable!] (restricted)
Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January. [Downloadable!] (restricted)

Full references

Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

Nicolas van Zeebroeck, 2007. "The puzzle of patent value indicators," Working Papers CEB 07-023.RS, Université Libre de Bruxelles, Solvay Brussels School of Economics and Management, Centre Emile Bernheim (CEB). [Downloadable!]
Nicolas van Zeebroeck, 2007. "Patents only live twice: a patent survival analysis in Europe," Working Papers CEB 07-028.RS, Université Libre de Bruxelles, Solvay Brussels School of Economics and Management, Centre Emile Bernheim (CEB). [Downloadable!]

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