How to measure patent thickets--A novel approach
This paper provides a direct measure of the density of patent thickets based on patent citations. We discuss the algorithm that generates the measure and present descriptive results validating it. Moreover, we identify technology areas particularly affected by patent thickets.
If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.
As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.
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.:
- Georg Graevenitz & Stefan Wagner & Dietmar Harhoff, 2013.
"Incidence and Growth of Patent Thickets: The Impact of Technological Opportunities and Complexity,"
Journal of Industrial Economics,
Wiley Blackwell, vol. 61(3), pages 521-563, 09.
- Graevenitz, Georg von & Wagner, Stefan & Harhoff, Dietmar, 2011. "Incidence and Growth of Patent Thickets - The Impact of Technological Opportunities and Complexity," Discussion Paper Series of SFB/TR 15 Governance and the Efficiency of Economic Systems 356, Free University of Berlin, Humboldt University of Berlin, University of Bonn, University of Mannheim, University of Munich.
- Harhoff, Dietmar & von Graevenitz, Georg & Wagner, Stefan, 2008. "Incidence and Growth of Patent Thickets - The Impact of Technological Opportunities and Complexity," CEPR Discussion Papers 6900, C.E.P.R. Discussion Papers.
- Shapiro, Carl, 2000.
"Navigating the Patent Thicket: Cross Licenses, Patent Pools, and Standard-Setting,"
Competition Policy Center, Working Paper Series
qt4hs5s9wk, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
- Carl Shapiro, 2001. "Navigating the Patent Thicket: Cross Licenses, Patent Pools, and Standard Setting," NBER Chapters, in: Innovation Policy and the Economy, Volume 1, pages 119-150 National Bureau of Economic Research, Inc.
- Carl Shapiro, 2004. "Navigating the Patent Thicket: Cross Licenses, Patent Pools and Standard Setting," Levine's Working Paper Archive 122247000000000539, David K. Levine.
- Carl Shapiro, 2003. "Navigating the Patent Thicket: Cross Licenses, Patent Pools, and Standard-Setting," Law and Economics 0303005, EconWPA.
- 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.
- Wesley M Cohen & Richard R Nelson & John P Walsh, 2003. "Protecting Their Intellectual Assets: Appropriability Conditions and Why U.S. Manufacturing Firms Patent (Or Not)," Levine's Working Paper Archive 618897000000000624, David K. Levine.
- 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 101-28, Spring.
- 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.
- 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.
- Bronwyn H. Hall, 2005.
"Exploring the Patent Explosion,"
The Journal of Technology Transfer,
Springer, vol. 30(2_2), pages 35-48, 01.
- Bronwyn Hall, 2004. "Exploring the patent explosion," ESRC Centre for Business Research - Working Papers wp291, ESRC Centre for Business Research.
- Bronwyn H. Hall, 2004. "Exploring the Patent Explosion," NBER Working Papers 10605, National Bureau of Economic Research, Inc.
- Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January.
When requesting a correction, please mention this item's handle: RePEc:eee:ecolet:v:111:y:2011:i:1:p:6-9. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Shamier, Wendy)
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 references are entirely missing, you can add them using this form.
If the full references list an item that is present in RePEc, but the system did not link 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 profile, as there may be some citations waiting for confirmation.
Please note that corrections may take a couple of weeks to filter through the various RePEc services.