IDEAS home Printed from https://ideas.repec.org/
MyIDEAS: Login to save this article or follow this journal

Submarines in software? continuations in US software patenting in the 1980s and 1990s

  • Stuart Graham
  • David Mowrey

This article examines the role of 'continuations' (procedural revisions of patent applications) in software patents and overall patenting in the United States during 1987-1999. The research represents the first effort of which we are aware to analyze data on continuations in software or any other patent class, providing information on the effects of 1995 changes in the US patent law intended to curb 'submarine patenting'. The analysis of all US patents shows that the use of continuations grew steadily during 1987-1995, with particularly rapid growth in software patenting. Sharp reversals in these growth rates after 1995 suggest that changes in the US patent law were effective. Prior to the 1995 changes in the patent law, continuation applications were used more intensively by large packaged-software firms than by other patentees, and both software and non-software patents subject to continuation tend to experience longer examination delays and to be more valuable.

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.

File URL: http://www.tandfonline.com/doi/abs/10.1080/1043859042000188700
Download Restriction: Access to full text is restricted to subscribers.

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.

Article provided by Taylor & Francis Journals in its journal Economics of Innovation and New Technology.

Volume (Year): 13 (2004)
Issue (Month): 5 ()
Pages: 443-456

as
in new window

Handle: RePEc:taf:ecinnt:v:13:y:2004:i:5:p:443-456
Contact details of provider: Web page: http://www.tandfonline.com/GEIN20

Order Information: Web: http://www.tandfonline.com/pricing/journal/GEIN20

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.:

as in new window
  1. 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.
  2. Hall, Bronwyn H. & Jaffee, Adam & Trajtenberg, Manuel, 2000. "Market Value and Patent Citations: A First Look," Department of Economics, Working Paper Series qt1rh8k6z2, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
  3. 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.
  4. Hall, B. & Jaffe, A. & Trajtenberg, M., 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," Papers 2001-29, Tel Aviv.
  5. Jean O. Lanjouw & Josh Lerner, 1997. "The Enforcement of Intellectual Property Rights: A Survey of the Empirical Literature," NBER Working Papers 6296, National Bureau of Economic Research, Inc.
  6. Kortum, Samuel & Lerner, Josh, 1999. "What is behind the recent surge in patenting?1," Research Policy, Elsevier, vol. 28(1), pages 1-22, January.
  7. Ben-David, Dan, 1998. "Convergence clubs and subsistence economies," Journal of Development Economics, Elsevier, vol. 55(1), pages 155-171, February.
Full references (including those not matched with items on IDEAS)

This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

When requesting a correction, please mention this item's handle: RePEc:taf:ecinnt:v:13:y:2004:i:5:p:443-456. 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: (Michael McNulty)

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.

This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.