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Patent licensing with spillovers

  • Aoki, Reiko
  • Tauman, Yair

The purpose of this paper is to study the effect of spillover on extent of licensing when cost reducing innovation is introduced and licensed to a number of oligopolistic firms. We characterize the equilibrium number of licenses that are sold through an auction. An increase in the number of licenses has two effects. First, it increases the competition between the licensees. Second, due to spillover, the non-licensees become more efficient contributing to even more competition. We find that despite these effects, a patentee of a significant innovation will sell more licenses when there is spillover than without spillover thereby inducing even more competition. In this case, consumer surplus will be greater with spillover. However, if the innovation is less significant, then the patentee will sell less licenses with spillover thereby restrict competition. In this case the market price will be higher and the consumer surplus will be smaller.

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Article provided by Elsevier in its journal Economics Letters.

Volume (Year): 73 (2001)
Issue (Month): 1 (October)
Pages: 125-130

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Handle: RePEc:eee:ecolet:v:73:y:2001:i:1:p:125-130
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  1. Kamien, Morton I., 1992. "Patent licensing," Handbook of Game Theory with Economic Applications, in: R.J. Aumann & S. Hart (ed.), Handbook of Game Theory with Economic Applications, edition 1, volume 1, chapter 11, pages 331-354 Elsevier.
  2. Morton I. Kamien & Yair Tauman, 1986. "Fees Versus Royalties and the Private Value of a Patent," The Quarterly Journal of Economics, Oxford University Press, vol. 101(3), pages 471-491.
  3. Muto, Shigeo, 1987. "Possibility of relicensing and patent protection," European Economic Review, Elsevier, vol. 31(4), pages 927-945, June.
  4. Michael L. Katz & Carl Shapiro, 1986. "How to License Intangible Property," The Quarterly Journal of Economics, Oxford University Press, vol. 101(3), pages 567-589.
  5. Kamien, Morton I. & Oren, Shmuel S. & Tauman, Yair, 1992. "Optimal licensing of cost-reducing innovation," Journal of Mathematical Economics, Elsevier, vol. 21(5), pages 483-508.
  6. Aoki, Reiko & Tauman, Yair, 2001. "Patent licensing with spillovers," Economics Letters, Elsevier, vol. 73(1), pages 125-130, October.
  7. Janusz A. Ordover, 1991. "A Patent System for Both Diffusion and Exclusion," Journal of Economic Perspectives, American Economic Association, vol. 5(1), pages 43-60, Winter.
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