Do "Reverse Payment" Settlements of Brand-Generic Patent Disputes in the Pharmaceutical Industry Constitute an Anticompetitive Pay for Delay?
Brand and generic drug manufacturers frequently settle patent litigation on terms that include a payment to the generic manufacturer along with a specified date at which the generic would enter the market. The Federal Trade Commission contends that these agreements extend the brand's market exclusivity and amount to anticompetitive divisions of the market. The parties involved defend the settlements as normal business agreements that reduce business risk associated with litigation. The anticompetitive hypothesis implies brand stock prices should rise with announcement of the settlement. We classify 68 brand-generic settlements from 1993 to the present into those with and without an indication of a "reverse payment" from the brand to the generic, and conduct an event study of the announcement of the patent settlements on the stock price of the brand. For settlements with an indication of a reverse payment, brand stock prices rise on average 6% at the announcement. A "control group" of brand-generic settlements without indication of a reverse payment had no significant effect on the brands' stock prices. Our results support the hypothesis that settlements with a reverse payment increase the expected profits of the brand manufacturer and are anticompetitive.
|Date of creation:||Jul 2014|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
Web page: http://www.nber.org
More information through EDIRC
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.:
- Shapiro, Carl, 2003.
" Antitrust Limits to Patent Settlements,"
RAND Journal of Economics,
The RAND Corporation, vol. 34(2), pages 391-411, Summer.
- Shapiro, Carl, 2001. "Antitrust Limits to Patent Settlements," Competition Policy Center, Working Paper Series qt87s5j911, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
- Carl Shapiro, 2003. "Antitrust Limits to Patent Settlements," Law and Economics 0303004, EconWPA.
- Ellison, Sara Fisher & Mullin, Wallace P, 2001. "Gradual Incorporation of Information: Pharmaceutical Stocks and the Evolution of President Clinton's Health Care Reform," Journal of Law and Economics, University of Chicago Press, vol. 44(1), pages 89-129, April.
- Panattoni, Laura E., 2011. "The effect of Paragraph IV decisions and generic entry before patent expiration on brand pharmaceutical firms," Journal of Health Economics, Elsevier, vol. 30(1), pages 126-145, January.
- Karan Girotra & Christian Terwiesch & Karl T. Ulrich, 2007. "Valuing R& D Projects in a Portfolio: Evidence from the Pharmaceutical Industry," Management Science, INFORMS, vol. 53(9), pages 1452-1466, September.
- Brown, Stephen J. & Warner, Jerold B., 1985. "Using daily stock returns : The case of event studies," Journal of Financial Economics, Elsevier, vol. 14(1), pages 3-31, March.
- Fama, Eugene F. & French, Kenneth R., 1993. "Common risk factors in the returns on stocks and bonds," Journal of Financial Economics, Elsevier, vol. 33(1), pages 3-56, February. Full references (including those not matched with items on IDEAS)
When requesting a correction, please mention this item's handle: RePEc:nbr:nberwo:20292. 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: ()
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.