This CFE Opinion Statement, submitted to the EU institutions on 12 December 2019, comments on the decision in X-GmbH (Case C-135/17), in respect of which the Court of Justice of the European Union (Grand Chamber) (ECJ) delivered its decision on 26 February 2019. In general terms, the ECJ largely followed the Opinion given by Advocate General Mengozzi on 5 December 2018.