Which states: “Article 21
Requests for preliminary rulings
As a court common to the Contracting Member States and as part of their judicial system, the Court shall cooperate with the Court of Justice of the European Union to ensure the correct application and uniform interpretation of Union law, as any national court, in accordance with Article 267 TFEU in particular. Decisions of the Court of Justice of the European Union shall be binding on the Court.”
The 'common court' is being disputed by academics, as the jurisprudence of the CJEU on what is a 'common court' does not fly with removing national courts from interpreting EU law (art 4.3TFEU, art19.1TFEU and art267TFEU):
The European Parliament approved the unitary patent rules:
https://www.europarl.europa.eu/news/en/press-room/20121210IP...
The council agreed on the Unified Patent Court:
https://www.unified-patent-court.org/sites/default/files/upc...
Which states: “Article 21 Requests for preliminary rulings As a court common to the Contracting Member States and as part of their judicial system, the Court shall cooperate with the Court of Justice of the European Union to ensure the correct application and uniform interpretation of Union law, as any national court, in accordance with Article 267 TFEU in particular. Decisions of the Court of Justice of the European Union shall be binding on the Court.”