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Competition, patent protection, and innovation with heterogeneous firms in an endogenous market structure
Author(s) -
Suzuki Keishun
Publication year - 2020
Publication title -
journal of public economic theory
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.809
H-Index - 32
eISSN - 1467-9779
pISSN - 1097-3923
DOI - 10.1111/jpet.12415
Subject(s) - competition (biology) , economics , market structure , endogenous growth theory , industrial organization , market competition , microeconomics , general equilibrium theory , market economy , ecology , biology , human capital
This paper revisits the relationship between competition and innovation by incorporating the heterogeneity of R&D efficiency across firms and an endogenous market structure in a dynamic general equilibrium model. Using an analytically tractable model, we show that competition and innovation can have either an inverted‐U or a negative relationship, as reported by several empirical studies. Furthermore, we show that the effect of strengthening patent protection on innovation depends on the competition level. In particular, we find a complementary relationship between competition policy and the strengthening of patent protection.