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Discussion Papers In Economics And Business. 2014, 14-27-Rev., p. 1-14

A patentability requirement and industries targeted by R&D

Kishi, Keiichi

Graduate School of Economics and Osaka School of International Public Policy (OSIPP), Osaka University

英語

text

2014-10

* Revised： [14-27, 2014]

In this paper, we introduce into a Schumpeterian growth model an inventive step: a minimum innovation size required for patents, which is a patentability requirement. We show that each R&D firm targets only the industries that the incumbent’s technology is sufficiently obsolete in order to satisfy an inventive step requirement. This is because a technological gap between innovator and incumbent is larger in the industries that use older technology. Under the circumstance, strengthening an inventive step requirement reduces the industries targeted by R&D, on the other hand, increases R&D investments to the targeted industries. Consequently, we find a nonmonotonic effect of the inventive step on the aggregate flow of innovations.

46088

A patentability requirement and industries targeted by R&D

Kishi, Keiichi

Graduate School of Economics and Osaka School of International Public Policy (OSIPP), Osaka University

英語

2014-10

Discussion Papers In Economics And Business

14-27-Rev.

1

14

https://hdl.handle.net/11094/46088