Case C-194/17 P: Judgment of the Court (Third Chamber) of 31 January 2019 — Georgios Pandalis v European Union Intellectual Property Office (EUIPO), LR Health & Beauty Systems GmbH (Appeal — EU trade mark — Regulation (EC) No 207/2009 — Article 51(1)(a) and (2) and Article 75 — EU trade mark Cystus — Food supplements not for medical purposes — Partial revocation — Lack of genuine use of the trade mark — Perception of the word ‘cystus’ as a descriptive indication of the main ingredient of the goods concerned — Obligation to state reasons)