テクニカルレポート

ディスカッション／ワーキング・ペーパー

text

Discussion Papers In Economics And Business. 2017, 17-27, p. 1-29

Welfare Effects of Patent Protection in a Semi-Endogenous Growth Model

Iwaisako, Tatsuro

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

英語

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2017-08

http://www2.econ.osaka-u.ac.jp/library/global/dp/1727.pdf

This paper examines how strengthening patent protection affects welfare in a nonscale qualityladder model, which was developed by Segerstrom (1998) and generalized by Li (2003). In the Segerstrom–Li model, patent protection creates no distortion in static allocation among the production sectors. In order to examine the welfare effects of strengthening patent protection adequately, we incorporate a competitive outside good into the Segerstrom–Li model. In the general model, we derive the welfare-maximizing degree of patent protection analytically by utilizing a linear approximation of the transition path. The result shows that the welfare-maximizing degree of patent protection is weaker when the market share of the competitive outside good is psitive than when it is zero. In other words, evaluating the welfare effect of patent protection without considering the static distortion which it creates leads to excessive patent protection.

62270

Welfare Effects of Patent Protection in a Semi-Endogenous Growth Model

Iwaisako, Tatsuro

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

英語

2017-08

Discussion Papers In Economics And Business

17-27

1

29

https://hdl.handle.net/11094/62270

http://www2.econ.osaka-u.ac.jp/library/global/dp/1727.pdf