Case T-215/20: Judgment of the General Court of 16 June 2021 — Fidia farmaceutici v EUIPO — Ioulia and Irene Tseti Pharmaceutical Laboratories (HYAL) (EU trade mark — Invalidity proceedings — EU word mark HYAL — Article 51(1)(a) of Regulation (EC) No 40/94 (now Article 59(1)(a) of Regulation (EU) 2017/1001) — Absolute ground for refusal — Article 7(1)(c) of Regulation No 40/94 (now Article 7(1)(c) of Regulation 2017/1001) — Right to be heard — Audi alteram partem rule — Obligation to state reasons — Sound administration and equal treatment — Article 165(1) of Regulation 2017/1001)