Case T-530/21: Judgment of the General Court of 14 December 2022 — Pierre Lannier v EUIPO — Pierre Lang Trading (PL) (EU trade mark — Opposition proceedings — Application for an EU figurative mark representing the superposed capital letters ‘P’ and ‘L’ — Earlier EU figurative mark representing a mirror image combination of the superposed capital letters ‘P’ and ‘L’ — Admissibility of the appeal before the Board of Appeal — Locus standi — 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))