knowledge spillovers are unmeasurable, a 'goodness of fit' measure is constructed using innovation survey data. It turns out … measures constructed from innovation survey data appear to work reasonably well while measures of the Euclidean technological …

as well as pooled mean group and mean group estimators, the latter in a dynamic heterogeneous panel framework. We find … support for a dynamic estimation setup and derive statements regarding the homogeneity assumption with respect to the three … most prominent explanatory variables in the literature: the capital-output ratio, total factor productivity and trade …

relationship using panel data on German start-up firms as well as German patent data. It employs different indicators of patenting … activity. By applying fixed-effects and first-differencing panel data methods it is shown that patenting activity has a …

or output of a knowledge production function. We suggest that the productivity of research in patent production functions …Many studies investigate the relationship between R&D expenditures as an input and patents as an intermediate product … to patentable knowledge, and development happens after the initial research phase that may have led to a patent. Instead …

applied to a newly constructed panel for Germany. Generalized Method of Moments (GMM) estimation techniques for dynamic panel …This paper examines empirically the relationship between innovation and market structure within a simultaneous … concentration. In contrast, competition enforces innovation, i.e. sales concentration has a negative impact on R&D. …

We propose four different GMM estimators that allow almost consistent estimation of the structural parameters of panel …

We estimate the determinants of various types of product innovation. Knowledge spillovers from rivals have a positive … exert no such independent influence on drastic innovation activities. The results support the hypothesis that establishments …

&D Collaboration ; Knowledge Exchange ; Patents ; Innovation ; Count Data Models … patent quantity is driven by knowledge exchange rather than joint R&D. Firms engaged in joint R&D, on the other hand, receive … more forward citations per patent indicating that joint R&D enhances patent quality. In light of literature on strategic …

such as the European Patent Office (EPO). Yet, not all firms file their patents at the EPO, raising the specter of a …The study of the innovative output of firms often relies on a count of patents filed at one single office of reference … selection bias. Using a novel dataset of the whole population of patents by Belgian firms, we show that the single-office count …