We investigate the causal effect of patent rights on cumulative innovation, using large-scale data that approximate the … patent universe in its technological and economic variety. We introduce a novel instrumental variable for patent invalidation … that exploits personnel scarcity in post-grant opposition at the European Patent Office. We find that patent invalidation …

This article investigates patent protection for a long sequence of innovations where firms repeatedly supersede each … using a patentability requirement--a minimum innovation size required for patents. A patentability requirement can stimulate … to innovation …

This study was initiated in order to provide more factual insight into the recent debates on patent reforms in general … and more particularly, the practice of patent continuations in the United States Patent and Trademark Office ("USPTO … components of the flow of patent applications to the USPTO was carried out and insight into the ever-increasing propensity of …

China has a wide-range of patent-specific and other patent-related policies in-place, many of which are at least … partially meant to stimulate patents and "indigenous innovation." However, the analysis in this paper discusses how some of … innovation …

This paper analyzes how different innovation-strategies of incumbent firms affect the quality of their entrepreneurial … spawns. Using a novel data set that combines employer-employee micro data from Sweden with firm level patent application data … files for the period 1997-2008, three types of incumbent firms are distinguished: firms that are engaged in innovation …

software patent. Moreover, we examine the impact of contextual factors related to the nature of innovation underlying firms …’ patent portfolios (exploitative vs. explorative) and the environmental uncertainty (competitiveness and dynamism) on the … value of software patents. Specifically, we examine the interaction effect of a firm’s software patent stock and its …

This paper examines the implications of Open Source License (OSL) selection on software innovation, and suggests how …

innovation. This belief was a key principle underlying the Bayh-Dole Act, which gave universities the right to own and license … subsequent commercialization or termination of the licenses to these inventions as a function of the length of patent protection …, we find two opposing effects of time. The length of patent protection provides an incentive for the firm to invest that …

This paper analyses the determinants of technological diversification for small innovative companies. Using patent data …

In this study, we empirically assess the contributions of inventors and firms for innovation using a 37-year panel of U …