Joined Cases C-148/21 and C-184/21: Judgment of the Court (Grand Chamber) of 22 December 2022 (requests for a preliminary ruling from the Tribunal d’arrondissement de Luxembourg — Luxembourg — and from the Tribunal de l’entreprise francophone de Bruxelles — Belgium) — Christian Louboutin v Amazon Europe Core Sàrl (C-148/21), Amazon EU Sàrl (C-148/21), Amazon Services Europe Sàrl (C-148/21), Amazon.com Inc. (C-184/21), Amazon Services LLC (C-184/21) (Reference for a preliminary ruling — EU trade mark — Regulation (EU) 2017/1001 — Article 9(2)(a) — Rights conferred by an EU trade mark — Concept of ‘use’ — Operator of an online sales website incorporating an online marketplace — Advertisements published on that marketplace by third-party sellers using, in those advertisements, a sign which is identical with a trade mark of another person for goods which are identical with those for which that trade mark is registered — Perception of that sign as forming an integral part of the commercial communication of that operator — Method of presenting the advertisements which does not make it possible to distinguish clearly the offerings of that operator from those of the third-party sellers)