Many studies investigate the relationship between R&D expenditures as an input and patents as an intermediate product or output of a knowledge production function. We suggest that the productivity of research in patent production functions has been underestimated in the literature, as scholars...

The theoretical discussion concerning the question whether the incumbent or the (potential) entrant invests more into R&D has attracted considerable interest. This paper reports the results of an empirical study on this question using data of about 3500 German firms over the years 1992 to 1995....

This paper examines the effect of the German co-determination law of 1976 (MitbestG) on the innovative activity of German firms. Co-determination applies to firms with 2000 employees or more. Data from 1971-1976 and 1981-1990 on 148 firms are used to compare the number of patents granted to...

This paper examines the effect of the German co-determination law of 1976 (MitbestG) on the innovative activity of German firms. Co-determination applies to firms with 2000 employees or more. Data from 1971-1976 and 1981-1990 on 148 firms are used to compare the number of patents granted to...

Successful innovative activity is a major contribution to the intangible capital of firms. Although its importance is generally acknowledged, the contribution to companies? profits is a priori unclear. We present the results of an empirical study on the effects of the patent stock on...

Many studies investigate the relationship between R&D expenditures as an input and patents as an intermediate product or output of a knowledge production function. We suggest that the productivity of research in patent production functions has been underestimated in the literature, as scholars...