Among the most prominent theoretical frameworks dealing with the economic underlyings of firms' make-or-buy decisions are Transaction Cost Economics (TCE) and the Resourced Based View (RBV). Relying on panel data covering 107 European firms over eight years I test predictions from both TCE and...

There has been a wide-spread misconception based on the imprecise wording of Art. 52 of the European Patent Convention (EPC) that the protection of business methods by patents is prohibited in Europe. This paper investigates the legal framework set by patent laws with respect to the...

We investigate incidence and evolution of patent thickets. Our empirical analysis is based on a theoretical model of patenting in complex and discrete technologies. The model captures how competition for patent portfolios and complementarity of patents affect patenting incentives. We show that...

Post-grant validity challenges at patent offices rely on the private initiative of third parties to correct mistakes made by patent offices. We hypothesize that incentives to bring post-grant validity challenges are reduced when many firms benefit from revocation of a patent and when firms are...

The number of patent applications filed at the Chinese State Intellectual Property Office SIPO grew tremendously over the last decades and the SIPO has become the world's third largest patent office by 2009. In this paper, we provide an overview of the institutional background of patent...

Most econometric analyses of patent data rely on regression methods using a parametric form of the predictor for modeling the dependence of the response given certain covariates. These methods often lack the capability of identifying non-linear relationships between dependent and independent...

Herbert Zech, Humboldt-Universität zu Berlin, fällt insgesamt ein positives Urteil zum Patentschutz: Er ermögliche technische Innovation in Bereichen, in denen sich Entwicklungsaktivitäten wegen leichter Nachahmbarkeit und hohen Investitionsbedarfs ansonsten nicht lohnen würden....

Die unklare Formulierung des Artikels 52 des Europäischen Patentübereinkommens hat zu einer Unsicherheit bezüglich der Patentierbarkeit von Erfindungen mit finanzwirtschaftlichem Hintergrund am Europäischen Patentamt (EPA) geführt. Der vorliegende Artikel gibt einen Überblick über die...

The existing literature identifies patent thickets indirectly. In this paper we propose a novel measure based on patent citations which allows us to measure the density of patent thickets directly. We discuss the algorithm which generates the measure and present descriptive results validating...