Thomas D. Jeitschko and Nanyun Zhang, EAG 12-5, July 2012
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Abstract:
The conventional antitrust wisdom is that the formation of patent pools is welfare en-
hancing when patents are complementary, since the pool avoids a double-marginalization
problem associated with independent licensing. The focus of this paper is on (down-
stream) product development and commercialization on the basis of perfectly comple-
mentary patents. We consider development technologies that entail spillovers between
rivals, and assume that nal demand products are imperfect substitutes. When pool
formation facilitates information sharing and either increases spillovers in development
or decreases the degree of product dierentiation, patent pools can adversely aect
welfare by reducing the incentives towards product development and product mar-
ket competition|even with perfectly complementary patents. This modies and even
negates the conventional wisdom for some settings and suggests why patent pools are
uncommon in science-based industries such as biotech and pharmaceuticals, despite
there being frequent policy advocacy for them.
Keywords: Patent Pools, Research and Development, Innovation, BioTechnology, Electronics
JEL classifcations: L1 (Market Structure, Firm Strategy, and Market Performance), L2 (Firm Objectives, Organization, and Behavior), L4 (Antitrust Issues and Policies), L6 (Industry Studies: Manufacturing), D2 (Production and Organizations), D4 (Mar- ket Structure and Pricing)
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