Case T-188/21: Judgment of the General Court of 15 December 2021 — Lück v EUIPO — R. H. Investment (MALLE) (EU trade mark — Invalidity proceedings — EU word mark MALLE — Absolute grounds for refusal — Descriptive character — No distinctive character — Article 7(1)(b) and (c) of Regulation 2017/1001 — Ineffective nature of the single plea in law)