The influence of strategic patenting on companies' patent portfolios

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 investigation is based on survey and patent data from German companies. We find clear evidence that the companies' patenting strategies explain the characteristics of their patent portfolios. First, companies using patents to protect their technological knowledge base receive a higher number of 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 oppositions to their patents.

[1]  Rosemarie H. Ziedonis,et al.  The patent paradox revisited: an empirical study of patenting in the U , 2001 .

[2]  Bruno van Pottelsberghe de la Potterie,et al.  THE INSTITUTIONAL SOURCES OF KNOWLEDGE AND THE VALUE OF ACADEMIC PATENTS , 2007 .

[3]  Mark A. Schankerman,et al.  Strategic Patenting and Software Innovation , 2006 .

[4]  Manuel Trajtenberg,et al.  Patents, Citations, and Innovations: A Window on the Knowledge Economy , 2002 .

[5]  Ariel Pakes,et al.  Estimates of the Value of Patent Rights in European Countries During Thepost-1950 Period , 1985 .

[6]  D. H. Besterfield.  Quality control , 1979 .

[7]  J. Shoven,et al.  NATIONAL BUREAU OF ECONOMIC RESEARCH 1050 Massachusetts Avenue Cambridge, MA 02138 , 1987 .

[8]  David C. Mowery,et al.  Post-Issue Patent "Quality Control": A Comparative Study of Us Patent Re-Examinations and European Patent Oppositions , 2002 .

[9]  Carl Shapiro,et al.  Antitrust Limits to Patent Settlements , 2001 .

[10]  Wesley M. Cohen,et al.  R&D spillovers, patents and the incentives to innovate in Japan and the United States , 2002 .

[11]  Samuel Kortum,et al.  What is behind the recent surge in patenting , 1999 .

[12]  K. Hussinger.  IS SILENCE GOLDEN? PATENTS VERSUS SECRECY AT THE FIRM LEVEL , 2006 .

[13]  Scott Shane,et al.  The Halo Effect and Technology Licensing: The Influence of Institutional Prestige on the Licensing of University Inventions , 2003, Manag. Sci..

[14]  A. Jaffe.  The U.S. patent system in transition: policy innovation and the innovation process , 2000 .

[15]  Carine Peeters,et al.  Innovation strategy and the patenting performances of large firms , 2006 .

[16]  Ariel Pakes,et al.  Estimates of the Value of Patent Rights in European Countries During Thepost-1950 Period , 1985 .

[17]  M. Trajtenberg.  A Penny for Your Quotes : Patent Citations and the Value of Innovations , 1990 .

[18]  A. Arundel.  The relative effectiveness of patents and secrecy for appropriation , 2001 .

[19]  Kirk Teska,et al.  Strategic Patenting , 2009, IEEE Spectrum.

[20]  Deepak Somaya.  Strategic determinants of decisions not to settle patent litigation , 2003 .

[21]  Z. Griliches,et al.  Citations, Family Size, Opposition and the Value of Patent Rights Have Profited from Comments and Suggestions , 2002 .

[22]  Joshua Lerner,et al.  Innovation and Its Discontents: How Our Broken Patent System is Endangering Innovation and Progress, and What to Do About It , 2011 .

[23]  Karin Hoisl,et al.  European Patent Citations – How to Count and How to Interpret them, unpublished manuscript, University of Munich , 2009 .

[24]  Mark A. Schankerman,et al.  Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators , 2004 .

[25]  David C. Mowery,et al.  Post-Issue Patent , 2002 .

[26]  Michael Friedewald,et al.  Software Patents: Economic Impacts And Policy Implications , 2006 .

[27]  Carine Peeters,et al.  Innovation strategy and the patenting behavior of firms , 2006 .

[28]  TATuP Redaktion.  Zur technologischen Leistungsfähigkeit Deutschlands , 1996 .

[29]  H. Varian,et al.  The Economics Of Information Technology , 2004 .

[30]  K. Blind,et al.  Motives to patent: Empirical evidence from Germany , 2006 .

[31]  D. Harhoff,et al.  Determinants of Opposition against EPO Patent Grants – The Case of Biotechnology and Pharmaceuticals ∗ , 2002 .

[32]  Bronwyn H Hall,et al.  Market value and patent citations , 2005 .

[33]  Ove Granstrand,et al.  The economics and management of intellectual property : towards intellectual capitalism , 1999 .

[34]  Ashish Arora,et al.  The Value of International Patent Rights , 2001 .

[35]  D. Harhoff,et al.  Citation Frequency and the Value of Patented Inventions , 1999, Review of Economics and Statistics.