This study examines the impact of technological acquisitions on contributions to firm-sponsored community-based open-source software (OSS). We distinguish between internal contributors affiliated with target firms and external contributors from the community, and examine how they respond to...

This paper provides a quantitative study (N = 268) of patterns of free revealing offirm-developed innovations within embedded Linux, a type of open source software (OSS). Ifind that firms, without being obliged to do so, contribute many of their own developmentsback to public embedded Linux...

This paper provides novel empirical evidence on the private value of patents and R&D. We analyze an unbalanced sample of firms from five EU countries - France, Germany, Switzerland, Sweden and the UK in the period 1985-2005. We explore the relationship between firm’s stock market value and...

This paper investigates the skills and the division of labor among participants in collective inventions. Our analysis draws on a large sample of projects registered at Sourceforge.net, the world’s largest incubator of open source software activity. We test the hypothesis that skill variety of...

In this paper I study how innovation investment in a software duopoly is affected by the fact that one of the firms is, or might become Open Source. Firms can either be proprietary source (PS) or open source (OS), and have different initial technological levels. An OS firm is a for profit...

In this paper I study how innovation investment in a software duopoly is affected by the fact that one of the firms is, or might become Open Source. Firms can either be proprietary source (PS) or open source (OS) and have different initial technological levels. An OS firm is a for profit...

Software patents not only do no promote innovation, they instead reduce it. The U.S. Executive branch has recommended against recognizing software patents, and the Supreme Court has never rejected a test (its physical-transformation test) that would invalidate pure business method and software...

Software patents not only do no promote innovation, they instead reduce it. The U.S. Executive branch has recommended against recognizing software patents, and the Supreme Court has never rejected a test (its physical-transformation test) that would invalidate pure business method and software...

Design is an exploratory activity, and there are many ways to get lost or stuck. There is no pre-existing map – the map is built through the design process. We first discuss design space - the space of possible choices in creating something new - and how it can be visualized. We then discuss...