A Patentability Requirement For Sequential Innovation
This paper investigates patent protection when there is a long sequence of innovations and firms repeatedly supersede each other. There can be insufficient incentives for R&D if successful firms earn market profit only until competitors achieve something better. To solve this problem, patents must provide protection against future innovators. This paper proposes using a patentability requirement aminimuminnovation size required to get a patent toserve this purpose. I showthat a patentability requirement can stimulate R&D investment and increase dynamic efficiency. Intuitively, requiring firms to pursue larger innovations can prolong market incumbency because larger innovations are harder to achieve. Longer market incumbency then implies an increased reward to innovation, stimulating R&D investment.
|Date of creation:||Mar 1997|
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- Reinganum, Jennifer R., "undated".
"Innovation and Industry Evolution,"
426, California Institute of Technology, Division of the Humanities and Social Sciences.
- Ted O'Donoghue & Suzanne Scotchmer & Jacques-François Thisse, 1998.
"Patent Breadth, Patent Life, and the Pace of Technological Progress,"
Journal of Economics & Management Strategy,
Wiley Blackwell, vol. 7(1), pages 1-32, 03.
- O'DONOGHUE, Ted & SCOTCHMER, Suzanne & THISSE, Jacques-François, "undated". "Patent breadth, patent life, and the pace of technological progress," CORE Discussion Papers RP 1314, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Green, J.R. & Scotchmer, S., 1993.
"On the Division of Profit in Sequential Innovation,"
Harvard Institute of Economic Research Working Papers
1638, Harvard - Institute of Economic Research.
- Jerry R. Green & Suzanne Scotchmer, 1995. "On the Division of Profit in Sequential Innovation," RAND Journal of Economics, The RAND Corporation, vol. 26(1), pages 20-33, Spring.
- Carmen Matutes & Pierre Regibeau & Katharine Rockett, 1996. "Optimal Patent Design and the Diffusion of Innovations," RAND Journal of Economics, The RAND Corporation, vol. 27(1), pages 60-83, Spring.
- Aghion, Philippe & Howitt, Peter, 1992.
"A Model of Growth Through Creative Destruction,"
12490578, Harvard University Department of Economics.
- Philippe Aghion & Peter Howitt, 1990. "A Model of Growth Through Creative Destruction," NBER Working Papers 3223, National Bureau of Economic Research, Inc.
- Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," Working papers 527, Massachusetts Institute of Technology (MIT), Department of Economics.
- Aghion, P. & Howitt, P., 1990. "A Model Of Growth Through Creative Destruction," DELTA Working Papers 90-12, DELTA (Ecole normale supérieure).
- Aghion, P. & Howitt, P., 1989. "A Model Of Growth Through Creative Destruction," UWO Department of Economics Working Papers 8904, University of Western Ontario, Department of Economics.
- Nancy L. Stokey, 1995. "R&D and Economic Growth," Review of Economic Studies, Oxford University Press, vol. 62(3), pages 469-489.
- Christopher Budd & Christopher Harris & John Vickers, 1993. "A Model of the Evolution of Duopoly: Does the Asymmetry between Firms Tend to Increase or Decrease?," Review of Economic Studies, Oxford University Press, vol. 60(3), pages 543-573.
- Suzanne Scotchmer & Jerry Green, 1990. "Novelty and Disclosure in Patent Law," RAND Journal of Economics, The RAND Corporation, vol. 21(1), pages 131-146, Spring.
- M.A. La Manna, Manfredi, 1992. "Optimal patent life vs optimal patentability standards," International Journal of Industrial Organization, Elsevier, vol. 10(1), pages 81-89, March.
- Suzanne Scotchmer, 1996. "Protecting Early Innovators: Should Second-Generation Products Be Patentable?," RAND Journal of Economics, The RAND Corporation, vol. 27(2), pages 322-331, Summer.
- Richard Gilbert & Carl Shapiro, 1990.
"Optimal Patent Length and Breadth,"
RAND Journal of Economics,
The RAND Corporation, vol. 21(1), pages 106-112, Spring.
- Gilbert, Richard J & Newbery, David M G, 1982. "Preemptive Patenting and the Persistence of Monopoly," American Economic Review, American Economic Association, vol. 72(3), pages 514-526, June.
- Richard C. Levin & Alvin K. Klevorick & Richard R. Nelson & Sidney G. Winter, 1987. "Appropriating the Returns from Industrial Research and Development," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 18(3), pages 783-832.
- Gene M. Grossman & Elhanan Helpman, 1989.
"Quality Ladders in the Theory of Growth,"
NBER Working Papers
3099, National Bureau of Economic Research, Inc.
- Romer, Paul M, 1986.
"Increasing Returns and Long-run Growth,"
Journal of Political Economy,
University of Chicago Press, vol. 94(5), pages 1002-1037, October.
- Howard F. Chang, 1995. "Patent Scope, Antitrust Policy, and Cumulative Innovation," RAND Journal of Economics, The RAND Corporation, vol. 26(1), pages 34-57, Spring.
- Edwin Mansfield, 1984. "R&D and Innovation: Some Empirical Findings," NBER Chapters, in: R&D, Patents, and Productivity, pages 127-154 National Bureau of Economic Research, Inc.
- Suzanne Scotchmer, 1991. "Standing on the Shoulders of Giants: Cumulative Research and the Patent Law," Journal of Economic Perspectives, American Economic Association, vol. 5(1), pages 29-41, Winter.
- Davidson, C. & Segerstrom, P., 1991. "Patent Enforcement and Economic Growth," Papers 9004, Michigan State - Econometrics and Economic Theory.
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