This paper is an empirical test of the hypothesis that the appropriateness of different business strategies is conditional on the firm's distance to the industry frontier. We use data on four 2-digit high-tech manufacturing industries in the US over the period 1972-1999, and apply...

Innovationsfähigkeit ist in den hoch entwickelten Industrieländern die wichtigste Quelle für Wohlstand und Wachstum. Das DIW Berlin hat in diesem Jahr zum zweiten Mal im Auftrag der Deutsche Telekom Stiftung und des Bundesverbandes der Deutschen Industrie (BDI) einen Gesamtindikator für die...

This paper discusses the impact of a firm's technology portfolio on its market value. Two concepts are used to characterize a firm's portfolio: the number of technological fields and the degree of relatedness within the portfolio characterized by the amount of joint occurrences of patents in...

This paper is an empirical test of the hypothesis that the appropriateness of different business strategies is conditional on the firm's distance to the industry frontier. We use data on four 2-digit high-tech manufacturing industries in the US over the period 1972-1999, and apply...

This paper examines the interaction between intellectual property protection and competition policy on the choice of entrepreneurs with respect to commercialization as well as the rate of innovation. We find that stronger intellectual property protection makes it more likely that entrepreneurs...

We investigate women's underrepresentation among holders of commercialized patents: only 5.5% of holders of such patents are female. Using the National Survey of College Graduates 2003, we find only 7% of the gap in patenting rates is accounted for by women's lower probability of holding any...