An Article by Prof. Dr. Jochen Bühling With the decision “Servicemodul” of 18 January 2021 (GRUR-RR 2021, 97) the Court of Appeal Düsseldorf continues its case law in connection with the inspection proceedings in patent infringement cases. The decision creates a further building block on procedural measures. At the same time, it provides the parties with valuable instructions regarding litigation and the submission of “excessive information”.