Judgment of the Court (Second Chamber) of 3 September 2020.#Vereniging tot Behoud van Natuurmonumenten in Nederland and Others v European Commission.#Appeal – State aid – Aid scheme relating to the subsidised acquisition or free granting of nature land – Preliminary examination stage – Decision declaring the aid compatible with the internal market – Action for annulment – Admissibility – Regulation (EC) No 659/1999 – Article 1(h) – Meaning of ‘interested party’ – Competitive relationship – Meaning of ‘serious difficulties’ – Service of general economic interest – Secondary activities