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...

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...

We investigate the effect of quality of patents on the market value of firms represented by the Tobin's q. We consider the number of objections as well as the number of citations. We construct the database of patent stock, citation-weighted patent stock and objection-weighted patent stock. Our...

The aim of this paper is to investigate the role of Jacobian externalities stemmed from different technological sectors for international firms engaged both in environmental and in dirty activities. Firms' innovation, measured, as the development of new patents, is a key factor behind the...