In diesem Beitrag wird ein Oligopolmodell der Innovationsaktivität entwickelt und mit Daten aus dem Mannheimer Innovationspanel geschätzt. Das Modell erlaubt es, bei der empirischen Umsetzung auf die Verwendung von Marktanteilsdaten und Nachfrageelastizitäten zu verzichten, die typischerweise...

Through a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A search of subsequent U.S. and German patents yielded a count of citations to those patents....

We explore the tail of patented invention value distributions by using value estimates obtained directly from patent holders. The paper focuses on those full-term German patents of the application year 1977 which were held by West German and U.S. residents. The most valuable patents in our data...

Die Ergebnisse der multivariaten Analysen zur Beschäftigungsdynamik und dem Wachstumspotential junger innovativer Unternehmen lassen erkennen, daß junge innovative Unternehmen signifikant höhere Wachstumsraten erzielen als junge Unternehmen mit traditionellen Produkten. Die Abschätzung der...

Patent renewal studies reveal a highly rightward-skewed distribution of patent values. Our approach elicits valuations approximating those of the patented invention. This paper focuses on the full-term patents of the application year 1977 held by West German and U.S. residents. The tail of...

During the last years more and more discussions came up about the contribution of technology-oriented and technology-intensive industries for the economic development and employment. One reason for these contradictory evaluations of technology-intensive industries can be attributed to different...

During the last years more and more discussions came up about the contribution of technology-oriented and technology-intensive industries for the economic development and employment. This paper examines the foundation dynamic and the regional clustering of various technology-oriented sectors in...

R&D expenditures of firms varies vastly between and within industries. In recent years a lot of theoretical and empirical studies attempted to explain the distribution of R&D expenditures. Four main factors repeatedly appeared in this literature: Firm size, market power, appropriability and...

This paper studies the effect of regional spillovers on the rate of firm formation in two major West German industries for the time period from 1989 to 1993. I exploit regional variations in firm formation at the county level to identify the effects of historically given industry structure and...