Case T-505/20: Judgment of the General Court of 6 October 2021 — Guo v EUIPO — Sand Cph (sandriver) (EU trade mark — Invalidity proceedings — EU figurative mark sandriver — Earlier EU word mark SAND — Relative ground for refusal — Likelihood of confusion — Article 8(1)(b) of Regulation (EC) No 207/2009 (now Article 8(1)(b) of Regulation (EU) 2017/1001))