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Korea's Shift from Process to Product Patents in the Pharmaceutical Industry: An Event Study of the Impact of American Pressure on Korean Film

  • Sumner La Croix

    ()

    (Department of Economics, University of Hawaii at Manoa)

Out analysis focuses on the effect of U.S. government pressure on Korea to adopt product patents for chemical and pharmaceutical products. American pressure began in November 1985 and ended with the Korean Legislature's passage of a new patent law in December 1986. We conduct an event study of the effect of the new patent law on the value of Korean pharmaceutical firms listed on the Korea Stock Exchange. Regression analysis shows that the new law induced excess returns of -74 percent over the 14-month analysis period. The results suggest that adoption of stronger patent laws reduced Korea's wealth.

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File URL: http://www.economics.hawaii.edu/research/workingpapers/88-98/WP_94-2.pdf
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Paper provided by University of Hawaii at Manoa, Department of Economics in its series Working Papers with number 199402.

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Length: 16 pages
Date of creation: 1994
Date of revision:
Handle: RePEc:hai:wpaper:199402
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  1. Kawaura, Akihiko & La Croix, Sumner J, 1995. "Japan's Shift from Process to Product Patents in the Pharmaceutical Industry: An Event Study of the Impact on Japanese Firms," Economic Inquiry, Western Economic Association International, vol. 33(1), pages 88-103, January.
  2. Boehmer, Ekkehart & Masumeci, Jim & Poulsen, Annette B., 1991. "Event-study methodology under conditions of event-induced variance," Journal of Financial Economics, Elsevier, vol. 30(2), pages 253-272, December.
  3. Engle, R. F. & Granger, C. W. J. (ed.), 1991. "Long-Run Economic Relationships: Readings in Cointegration," OUP Catalogue, Oxford University Press, number 9780198283393, March.
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