About the Work This practical-scientific commentary addresses the four central legal acts of the new EU unitary patent system, which will come into force shortly depending on the progress of the ratification process. These include the Regulation on the European Patent with Unitary Effect (Regulation No. 1257/2012 on the implementation of enhanced cooperation in the area of the establishment of a unitary patent protection), the Translation Regulation (Regulation No. 1260/2012 on the implementation of enhanced cooperation in the area of the establishment of a unitary patent protection regarding the applicable translation arrangements), the Agreement on the establishment of a Unified Patent Court for European Patents and European Unitary Patents, as well as the Court's Rules of Procedure in the official German version as of May 2017. Important ancillary provisions.