The document discusses the role of the Court of Justice of the European Union (CJEU) in shaping EU trade mark law and considers what the future may hold for UK trade mark law after Brexit. It provides examples of landmark CJEU trade mark cases and examines whether the UK will depart from CJEU case law interpretations of trade mark law or create a different system in the long term now that it is leaving the EU. The document concludes by questioning if the title appropriately captures these issues regarding the role of EU trade mark law in a post-Brexit UK.