Advanced Search
MyIDEAS: Login to save this article or follow this journal

Court Decisions and Equity Markets: Estimating the Value of Copyright Protection

Contents:

Author Info

  • Baker, Matthew J
  • Cunningham, Brendan M

Abstract

We construct a database of U.S. federal court decisions pertaining to copyright and changes in federal statutory copyright law and use this database to assemble indices measuring changes in the breadth of copyright protection. We combine our indices with information on excess returns to equity from a quarterly panel of firms and estimate how the breadth of copyright affects the market valuation of firm equity. A typical statute that increases copyright breadth generates an increase in a firm's excess return to equity of 40-209 basis points, depending on the exact time frame, the size of the firm, and the importance of the change in statutory law. A typical high-court decision expanding copyright generates a 13-105 basis-point increase in excess returns. Our results are robust across 4-5-year subsamples and the size distribution of firms. Our statutory findings are strongest in the most recent portion of the sample.

Download Info

To our knowledge, this item is not available for download. To find whether it is available, there are three options:
1. Check below under "Related research" whether another version of this item is available online.
2. Check on the provider's web page whether it is in fact available.
3. Perform a search for a similarly titled item that would be available.

Bibliographic Info

Article provided by University of Chicago Press in its journal Journal of Law and Economics.

Volume (Year): 49 (2006)
Issue (Month): 2 (October)
Pages: 567-96

as in new window
Handle: RePEc:ucp:jlawec:y:2006:v:49:i:2:p:567-96

Contact details of provider:
Web page: http://www.journals.uchicago.edu/JLE/

Related research

Keywords:

Other versions of this item:

References

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. Stan J. Liebowitz & Stephen E. Margolis, 2005. "Seventeen Famous Economists Weigh In On Copyright: The Role Of Theory, Empirics, And Network Effects," Law and Economics 0505003, EconWPA.
  2. Louis K.C. Chan & Josef Lakonishok & Theodore Sougiannis, 1999. "The Stock Market Valuation of Research and Development Expenditures," NBER Working Papers 7223, National Bureau of Economic Research, Inc.
  3. Stanley M. Besen & Leo J. Raskind, 1991. "An Introduction to the Law and Economics of Intellectual Property," Journal of Economic Perspectives, American Economic Association, vol. 5(1), pages 3-27, Winter.
  4. Thomas J. Miceli & Richard P. Adelstein, 2005. "An Economic Model of Fair Use," Wesleyan Economics Working Papers 2005-014, Wesleyan University, Department of Economics.
  5. Novos, Ian E & Waldman, Michael, 1984. "The Effects of Increased Copyright Protection: An Analytic Approach," Journal of Political Economy, University of Chicago Press, vol. 92(2), pages 236-46, April.
  6. Landes, William M & Posner, Richard A, 1989. "An Economic Analysis of Copyright Law," The Journal of Legal Studies, University of Chicago Press, vol. 18(2), pages 325-63, June.
  7. Kranenburg,Hans,van & Hogenbrink,Annelies, 2003. "Determinants of Multimedia, Entertainment, and Business Software Copyright Piracy: A Cross-national Study," Research Memorandum 039, Maastricht University, Maastricht Research School of Economics of Technology and Organization (METEOR).
  8. Rick Harbaugh & Rahul Khemka, . "Does Copyright Enforcement Encourage Piracy?," Claremont Colleges Working Papers 2000-14, Claremont Colleges.
  9. Kai-Lung Hui, 2002. "On the Supply of Creative Work: Evidence from the Movies," American Economic Review, American Economic Association, vol. 92(2), pages 217-220, May.
  10. Johnson, William R, 1985. "The Economics of Copying," Journal of Political Economy, University of Chicago Press, vol. 93(1), pages 158-74, February.
  11. Towse, Ruth, 1999. "Copyright and Economic Incentives: An Application to Performers' Rights in the Music Industry," Kyklos, Wiley Blackwell, vol. 52(3), pages 369-90.
  12. Eric Chiang & Djeto Assane, 2002. "Software copyright infringement among college students," Applied Economics, Taylor & Francis Journals, vol. 34(2), pages 157-166.
  13. repec:reg:wpaper:317 is not listed on IDEAS
  14. B. Zorina Khan & Kenneth L. Sokoloff, 2001. "The Early Development of Intellectual Property Institutions in the United States," Journal of Economic Perspectives, American Economic Association, vol. 15(3), pages 233-246, Summer.
Full references (including those not matched with items on IDEAS)

Citations

Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
as in new window

Cited by:
  1. Bronwyn Hall & Christian Helmers & Mark Rogers & Vania Sena, 2014. "The Choice between Formal and Informal Intellectual Property: A Review," Journal of Economic Literature, American Economic Association, vol. 52(2), pages 375-423, June.
  2. Christine Greenhalgh & Mark Rogers, 2007. "The Value of Intellectual Property Rights to Firms," Discussion Papers 06-036, Stanford Institute for Economic Policy Research.
  3. Jen-Te Yao, 2005. "How a Luxury Monopolist Might Benefit from a Stringent Counterfeit Monitoring Regime," International Journal of Business and Economics, College of Business, and College of Finance, Feng Chia University, Taichung, Taiwan, vol. 4(3), pages 177-192, December.
  4. Stan J. Liebowitz & Richard Watt, 2006. "How To Best Ensure Remuneration For Creators In The Market For Music? Copyright And Its Alternatives," Journal of Economic Surveys, Wiley Blackwell, vol. 20(4), pages 513-545, 09.
  5. Ivan Png & Qiu-hong Wang, 2007. "Copyright Duration and the Supply of Creative Work," Levine's Working Paper Archive 321307000000000478, David K. Levine.
  6. Ivan Png, 2006. "Copyright: A Plea for Empirical Research," Levine's Working Paper Archive 321307000000000484, David K. Levine.
  7. Felix Oberholzer-Gee & Koleman Strumpf, 2010. "File Sharing and Copyright," NBER Chapters, in: Innovation Policy and the Economy, Volume 10, pages 19-55 National Bureau of Economic Research, Inc.

Lists

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

Statistics

Access and download statistics

Corrections

When requesting a correction, please mention this item's handle: RePEc:ucp:jlawec:y:2006:v:49:i:2:p:567-96. 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: (Journals Division).

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.