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Evergreening, patent challenges, and effective market life in pharmaceuticals

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  • Hemphill, C. Scott
  • Sampat, Bhaven N.
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    Abstract

    Observers worry that generic patent challenges are on the rise and reduce the effective market life of drugs. A related concern is that challenges disproportionately target high-sales drugs, reducing market life for these “blockbusters.”

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    Bibliographic Info

    Article provided by Elsevier in its journal Journal of Health Economics.

    Volume (Year): 31 (2012)
    Issue (Month): 2 ()
    Pages: 327-339

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    Handle: RePEc:eee:jhecon:v:31:y:2012:i:2:p:327-339

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    Web page: http://www.elsevier.com/locate/inca/505560

    Related research

    Keywords: Pharmaceuticals; Patents; Innovation; Hatch–Waxman;

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    References

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    1. Henry G. Grabowski & Margaret Kyle, 2007. "Generic competition and market exclusivity periods in pharmaceuticals," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 28(4-5), pages 491-502.
    2. Patricia M. Danzon & Michael F. Furukawa, 2011. "Cross-National Evidence on Generic Pharmaceuticals: Pharmacy vs. Physician-Driven Markets," NBER Working Papers 17226, National Bureau of Economic Research, Inc.
    3. 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.
    4. Haiden Huskamp & Julie Donohue & Catherine Koss & Ernst Berndt & Richard Frank, 2008. "Generic Entry, Reformulations and Promotion of SSRIs in the US," PharmacoEconomics, Springer, vol. 26(7), pages 603-616, July.
    5. Lee G. Branstetter & Chirantan Chatterjee & Matthew Higgins, 2011. "Regulation and Welfare: Evidence from Paragraph IV Generic Entry in the Pharmaceutical Industry," NBER Working Papers 17188, National Bureau of Economic Research, Inc.
    6. Filson, Darren & Oweis, Ahmed, 2010. "The impacts of the rise of Paragraph IV challenges on startup alliance formation and firm value in the pharmaceutical industry," Journal of Health Economics, Elsevier, vol. 29(4), pages 575-584, July.
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    Cited by:
    1. Cotropia, Christopher A. & Lemley, Mark A. & Sampat, Bhaven, 2013. "Do applicant patent citations matter?," Research Policy, Elsevier, vol. 42(4), pages 844-854.
    2. Eric Budish & Benjamin N. Roin & Heidi Williams, 2013. "Do fixed patent terms distort innovation? Evidence from cancer clinical trials," NBER Working Papers 19430, National Bureau of Economic Research, Inc.
    3. Berndt, Ernst R & Dubois, Pierre, 2012. "Impacts of Patent Expiry and Regulatory Policies on Daily Cost of Pharmaceutical Treatments: OECD Countries, 2004-2010," CEPR Discussion Papers 9140, C.E.P.R. Discussion Papers.
    4. Murray L. Aitken & Ernst R. Berndt & Barry Bosworth & Iain M. Cockburn & Richard Frank & Michael Kleinrock & Bradley T. Shapiro, 2013. "The Regulation of Prescription Drug Competition and Market Responses: Patterns in Prices and Sales Following Loss of Exclusivity," NBER Working Papers 19487, National Bureau of Economic Research, Inc.

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