Spillovers, disclosure lags, and incentives to innovate. Do oligopolies over-invest in R&D?
We develop a dynamic duopoly, where firms have to take into account a technological externality, that reduces over time their innovation costs, and an inter-firm spillover, that lowers only the second comer's R&D cost. This spillover exerts its effect after a disclosure lag. We identify three possible equilibria, which are classified, according to the timing of R&D investments, as early, intermediate, and late. The intermediate equilibrium is subgame perfect for a wide parameters range. When the innovation size is large, it implies that the duopolistic market equilibrium involves underinvestment. Hence, even in presence of a moderate degree of inter-firms spillover, the competitive equilibrium calls for public policies aimed at increasing the research activity. When we focus on minor innovations -- the case in which, according to the earlier literature, the market equilibrium underinvests -- our results imply that the policies aimed at stimulating R&D have to be less sizeable than suggested before, despite the presence of an inter-firm spillover.
|Length:||nn pages 39|
|Date of creation:||Jun 2007|
|Date of revision:|
|Contact details of provider:|| Web page: http://www.unicatt.it/Istituti/TeoriaEconomica|
More information through EDIRC
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.:
- Glenn C. Loury, 1979. "Market Structure and Innovation," The Quarterly Journal of Economics, Oxford University Press, vol. 93(3), pages 395-410.
- Kamien, Morton I & Muller, Eitan & Zang, Israel, 1992. "Research Joint Ventures and R&D Cartels," American Economic Review, American Economic Association, vol. 82(5), pages 1293-306, December.
- Denicolo, Vincenzo, 1996. "Patent Races and Optimal Patent Breadth and Length," Journal of Industrial Economics, Wiley Blackwell, vol. 44(3), pages 249-65, September.
- Tom Lee & Louis L. Wilde, 1980. "Market Structure and Innovation: A Reformulation," The Quarterly Journal of Economics, Oxford University Press, vol. 94(2), pages 429-436.
- Mansfield, Edwin & Schwartz, Mark & Wagner, Samuel, 1981. "Imitation Costs and Patents: An Empirical Study," Economic Journal, Royal Economic Society, vol. 91(364), pages 907-18, December.
- Beath, John & Katsoulacos, Yannis & Ulph, David, 1989.
"Strategic R&D Policy,"
Royal Economic Society, vol. 99(395), pages 74-83, Supplemen.
- Drew Fudenberg & Jean Tirole, 1985. "Preemption and Rent Equalization in the Adoption of New Technology," Review of Economic Studies, Oxford University Press, vol. 52(3), pages 383-401.
- Dasgupta, Partha, 1988. "Patents, Priority and Imitation or, the Economics of Races and Waiting Games," Economic Journal, Royal Economic Society, vol. 98(389), pages 66-80, March.
- Roberto Hern·n & Pedro L. MarÌn & Georges Siotis, 2003.
"An empirical evaluation of the determinants of Research Joint Venture Formation,"
Journal of Industrial Economics,
Wiley Blackwell, vol. 51(1), pages 75-89, 03.
- Hernán, Roberto & Marín Uribe, Pedro Luis & Siotis, Georges, 2000. "An Empirical Evaluation Of The Determinants Of Research Joint Venture Formation," CEPR Discussion Papers 2442, C.E.P.R. Discussion Papers.
- Hoppe, Heidrun C. & Lehmann-Grube, Ulrich, 2005. "Innovation timing games: a general framework with applications," Journal of Economic Theory, Elsevier, vol. 121(1), pages 30-50, March.
- Hoppe, Heidrun C, 2002. "The Timing of New Technology Adoption: Theoretical Models and Empirical Evidence," Manchester School, University of Manchester, vol. 70(1), pages 56-76, January.
- Hoppe, Heidrun C., 2000. "Second-mover advantages in the strategic adoption of new technology under uncertainty," International Journal of Industrial Organization, Elsevier, vol. 18(2), pages 315-338, February.
- Flavio Delbono & Vincenzo Denicolo, 1991.
"Incentives to Innovate in a Cournot Oligopoly,"
The Quarterly Journal of Economics,
Oxford University Press, vol. 106(3), pages 951-961.
- Jennifer F. Reinganum, 1981. "On the Diffusion of New Technology: A Game Theoretic Approach," Review of Economic Studies, Oxford University Press, vol. 48(3), pages 395-405.
- Mansfield, Edwin, 1985. "How Rapidly Does New Industrial Technology Leak Out?," Journal of Industrial Economics, Wiley Blackwell, vol. 34(2), pages 217-23, December.
- Jim Y. Jin & Michael Troege, 2006. "R&D Competition And Endogenous Spillovers," Manchester School, University of Manchester, vol. 74(1), pages 40-51, 01.
- Stenbacka, Rune & Tombak, Mihkel M., 1994. "Strategic timing of adoption of new technologies under uncertainty," International Journal of Industrial Organization, Elsevier, vol. 12(3), pages 387-411, September.
When requesting a correction, please mention this item's handle: RePEc:ctc:serie6:itemq0744. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Gianluca Femminis)
If references are entirely missing, you can add them using this form.