Patent practitioners have always known it: the judge is finally the expert. In a recent decision (X ZB 19/20), the German Federal Supreme Court (BGH) emphasised that the judges of the German Federal Patent Court (BPatG) do have sufficient technical knowledge, and knowledge gained by experience in their field of expertise, to allow them to decide patent cases without the need to obtain external expertise (in the form of an expert opinion from an independent technical expert). Thus, the technically qualified judges of the BPatG may decide patent cases falling in their area of responsibility without external technical expertise.