Judgment of the General Court (Third Chamber) of 26 April 2023.#Arkadiusz Kaminski v European Union Intellectual Property Office.#EU trade mark – Revocation proceedings – EU word mark SYRENA – Application of the law ratione temporis – Partial inadmissibility of the action – Res judicata – Article 15(1) and Article 51(1)(a) and (2) of Regulation (EC) No 207/2009 (now Article 18(1) and Article 58(1)(a) and (2) of Regulation (EU) 2017/1001) – Genuine use in the European Union – Obligation to state reasons – First sentence of Article 94(1) of Regulation 2017/1001.#Case T-35/22.