Most econometric analyses of patent data rely on regression methods using a parametric form of the predictor for … techniques for estimation purposes. Using this methodology we reanalyze the determinants of patent oppositions in Europe for …

There has been a wide-spread misconception based on the imprecisewording of Art. 52 of the European Patent Convention … major patent indicators are computed. Further, a case study fromthe franking device industry which is characterized by …

We analyze the duration of the patent examination process at the EuropeanPatent Office (EPO). Our data contain … information related to the patent’seconomic and technical relevance, EPO capacity and workload as well as novelcitation measures … the patent grant by the examiner or an actual patent grant.Highly cited applications are approved faster by the EPO than …

. Zudem gehe es bei der Impfstoffdebatte eher um den Weg vom Patent zur Produktion als um die Entstehung neuer Produkte durch …

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 … patent thickets is introduced. European patent citations are used to construct measures of fragmentation and technological …

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 caught up in patent thickets. Using data on opposition against patents …

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 examination in China. Moreover, we empirically analyze the determinants of …

The imprecise wording of article 52 of the European Patent Convention lead to uncertainty with regard to the … patentability of inventions related to financial methods and processes at the European Patent Office (EPO). This article summarizes …,761 EPO patent applications based on inventions related to financial methods and processes are identified. The analysis of …

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 … by patent thickets. …