Case C-163/15: Judgment of the Court (Seventh Chamber) of 4 February 2016 (request for a preliminary ruling from the Oberlandesgericht Düsseldorf — Germany) — Youssef Hassan v Breiding Vertriebsgesellschaft mbH (Reference for a preliminary ruling — Community trade mark — Regulation (EC) No 207/2009 — Article 23 — Licence — Register of Community trade marks — Right of the licensee to bring proceedings for infringement notwithstanding the fact that the licence has not been entered in the Register)