Japan's Shift From Process to Product Patents in the Pharmaceutical Industry: An Event Study of the Impact on Japanese Firms
In 1976 Japan expanded the scope of its patent law by extending coverage to newly-developed chemical and pharmaceutical products. Previously the patent law had only provided protection to new production processes for manufacturing chemicals and pharmaceuticals. We use rate of return data from the Tokyo Stock Exchange for Japanese pharmaceutical companies to determine whether these firms gained from the introduction of pharmaceutical product patents. Using two different methodologies we find that the stock price for a portfolio of pharmaceutical firms and for individual firms significantly increased in response to the passage of the 1975 patent law.
|Date of creation:||1992|
|Contact details of provider:|| Postal: 2424 Maile Way, Honolulu, HI 96822|
Web page: http://www.economics.hawaii.edu/
More information through EDIRC
|Order Information:|| Web: http://www.economics.hawaii.edu/research/working.html Email: |
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.:
- Jarrell, Gregg A & Poulsen, Annette B, 1989. "Stock Trading before the Announcement of Tender Offers: Insider Trading or Market Anticipation?," Journal of Law, Economics and Organization, Oxford University Press, vol. 5(2), pages 225-248, Fall.
- Fama, Eugene F, et al, 1969. "The Adjustment of Stock Prices to New Information," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 10(1), pages 1-21, February.
- Chalk, Andrew, 1986. "Market Forces and Aircraft Safety: The Case of the DC-10," Economic Inquiry, Western Economic Association International, vol. 24(1), pages 43-60, January.
- Keim, Donald B., 1983. "Size-related anomalies and stock return seasonality : Further empirical evidence," Journal of Financial Economics, Elsevier, vol. 12(1), pages 13-32, June.
- Gultekin, Mustafa N. & Gultekin, N. Bulent, 1983. "Stock market seasonality : International Evidence," Journal of Financial Economics, Elsevier, vol. 12(4), pages 469-481, December.
- Kato, Kiyoshi & Schallheim, James S., 1985. "Seasonal and Size Anomalies in the Japanese Stock Market," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 20(02), pages 243-260, June.