The purpose of this paper is to investigate the impact of the length of the grant lag under the early disclosure system in Japan. First, we measure the length of the grant lag. Second, we investigate whether reducing the grant lag significantly increases patent applications. We use data from...

This article presents an empirical investigation of the role of IT（Information Technology）capital in the Japanese macroeconomy, with a particular focus on the adjustment of IT capital stock. We use the Translog model in this study and treat IT capital as the only quasi-fixed factor. We found...

The purpose of this study is to investigate the copyright protection of intellectual property under vertical relations. Vertical relations among author, manufacturer and retailer are considered. We develop several models, each with a different structure of vertical integration. R&D levels, total...

This paper aims to construct a patent option model suitable for the Japanese patent system, and then to explore empirically the economic effects caused by the significant revision of the Japanese patent maintenance fees in 1998. The revision of patent law in 1998 fundamentally changed the fee...

This paper aims to construct a patent option model suitable for the Japanese patent system, and then to explore empirically the economic effects caused by the significant revision of the Japanese patent maintenance fees in 1998. The revision of patent law in 1998 fundamentally changed the fee...

Using a new econometric model, this study provides evidence that contradicts previous assertions about the Japanese labour market. The interrelationship between employment and hours of labour is stressed in this analysis by explicitly dividing labour input into both employment and labour hours....

The purpose of this article is to investigate the relation of employment and IT capital. In particular, it examines whether employment increases or decreases as IT capital increases. The elasticity of substitution between IT capital and labour has drastically increased in the latter part of the...