Judgment of the General Court (Fourth Chamber) of 12 December 2018.#Interessengemeinschaft privater Milchverarbeiter Bayerns e.V. and Others v European Commission.#State aid — Aid for the Bavarian dairy sector — Financing of milk quality tests — Decision declaring the aid to be incompatible with the internal market — Right to participate in the administrative procedure — Article 108(2) TFEU — Article 6(1) of Regulation (EC) No 659/1999.#Joined Cases T-722/15 to T-724/15.