Markus Lenssen

When it comes to infringement of patents, the doctrine of equivalence has gained some more attention in the last few years in German courts and indeed also in some of my earlier posts on this blog …

There has been some confusion in Germany as to whether exhibiting products and services on a trade show qualifies as an infringing act or not. Most prominently, two decisions of the German Federal…

In its decision Digitalblock (digital block) the Higher Regional Court of Düsseldorf (Oberlandesgericht Düsseldorf) has discussed the question whether “sleeping” features of a device can cause patent…

About half a year ago I reported on new developments in German case law concerning the doctrine of equivalence (see http://kluwerpatentblog.com/2014/10/10/news-about-the-doctrine-of-equivalence-in…

The doctrine of equivalence has seen some kind of renaissance in German case law recently. In short words, there are three questions to be asked to decide for equivalent infringement if there is no…

Just recently, the judgement of the German Federal Court of Justice (Bun-desgerichtshof, BGH) in re X ZR 31/11 concerning a tyre removal machine has been published. This judgement is of relevance as…

In its decision "Fahrradkurbeleinheit" ("bike crank assembly") the Higher Regional Court of Düsseldorf has lifted an injunction by the Regional Court of Düsseldorf on appeal (OLG Düsseldorf, I-2 U 78…

The German Federal Court of Justice (Bundesgerichtshof, BGH) addressed some interesting questions on patents protecting methods relating to data in the decision "MPEG-2-Videosignalcodierung" ("MPEG-2…

As Christmas is coming closer, the "where is the Christmas stand?"-question comes up again. This little piece of engineering only used once a year is not only subject matter of several patents but…