We model spatial clusters of similar firms. Our model highlights how agglomerative forces lead to localized, individual connections among firms, while interaction costs generate a defined distance over which attraction forces operate. Overlapping firm interactions yield agglomeration clusters...

Our data from 351 innovating firms for the years 2001–2012 generally suggest that patentable ideas are strongly linked to the mobility of individual inventors, or that the knowledge flows transmitted are sticky inventor-specific. In other words, the larger the knowledge pool of an inventor...

Prior work suggests that more valuable patents are cited more and this view has become standard in the empirical innovation literature. Using an NPE-derived dataset with patent-specific revenues we find that the relationship of citations to value in fact forms an inverted-U, with fewer citations...

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 empirical paper analyses the importance of information and communications technologies (ICT) in the technological diversification trend among the world's large industrial firms. The objective of the research is twofold. First, to emphasise the emerging differences among technologies when...

Der Beitrag untersucht die Kommunikation von Innovationskompetenzen deutscher Unternehmen: Im Mittelpunkt der Ausfuehrungen steht die uebereinstimmung von faktischer Innovationskompetenz mit der externen Berichterstattung des Unternehmens ueber seine Innovationen und seinen Innovationserfolg. Im...

Under continual innovation, greater patent strength expands innovating firms’ profit against imitation, but also shifts profit from current to past innovators. We show how the impact of patents on innovation, as determined by these two opposing effects, varies with industry characteristics....

The impact of R&D on growth through spillovers has been a major topic of economic research over the last thirty years. A central problem in the literature is that firm performance is affected by two countervailing "spillovers" : a positive effect from technology (knowledge) spillovers and a...

Das vorliegende Arbeitspapler fasst die Ergebnisse einer im Sommer 1988 durchgeführten schriftlichen Expertenbefragung zu den Bestimmunsfaktoren von Forschung und Entwicklung in der Schweizer Industrie zusammen. Von den 940 beragten Untemehmungen haben 358 Oder ca. 40% geantwortet; sie waren in...

In the last decades, innovation activity has been defined by an increasing complexity and a faster pace of the underlying technological change. Accordingly, several studies have shown that competitive systems of innovation benefit from being able to build upon a wide but integrated spectrum of...