Patent Breadth, Patent Life and the Pace of Technological Improvement
AbstractIn active investment climates where firms sequentially improve each other's products, a patent can terminate either because it expires or because a noninfringing innovation displaces it in the market. The patent breadth and patent life together determine which of these occurs first. We distinguish "lagging" breadth, which protects against imitation, from "leading" breadth, which protects against new improved products. We show that if ideas for improvements are frequent then leading breadth is a necessary supplement to lagging breadth. We compare two types of patent policy with leading breadth: (i) patents are finite but very broad, so that the effective life of a patent coincides with its statutory life, and (ii) patents are long but narrow, so that the effective life of a patent ends when a better product replaces it. The former policy improves the diffusion of new products, but the latter has lower R&D; costs.
Download InfoTo 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 InfoPaper provided by University of California at Berkeley in its series Economics Working Papers with number 95-242.
Date of creation: 01 Oct 1995
Date of revision:
Contact details of provider:
Postal: University of California at Berkeley, Berkeley, CA USA
Web page: http://www.haas.berkeley.edu/groups/iber/wps/econwp.html
More information through EDIRC
Postal: IBER, F502 Haas Building, University of California, Berkeley CA 94720-1922
You can help add them by filling out this form.
CitEc Project, subscribe to its RSS feed for this item.
- Josef Zweimüller & Johann K. Brunner, 2005.
"Innovation And Growth With Rich And Poor Consumers,"
Wiley Blackwell, vol. 56(2), pages 233-262, 05.
- Brunner, Johann K & Zweimüller, Josef, 1998. "Innovation and Growth with Rich and Poor Consumers," CEPR Discussion Papers 1855, C.E.P.R. Discussion Papers.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Christopher F. Baum).
If references are entirely missing, you can add them using this form.