As is apparent from the Court’s caselaw (Arsenal Football Club; C-245/02 Anheuser-Busch [2004] ECR I-10989; Medion; Adam Opel; and Céline), the proprietor of a registered mark may prevent the use of a sign by a third party which is identical with, or similar to, his mark under Article 5(1)(b) of Directive 89/104 only if the following four conditions are satisfied:
Όπως προκύπτει από τη νομολογία του Δικαστηρίου (αποφάσεις Arsenal Football Club, προπαρατεθείσα·της 16ης Νοεμβρίου 2004, C-245/02, Anheuser-Busch, Συλλογή 2004, σ.