Opinion of Advocate General Ćapeta delivered on 17 March 2022.#European Commission v Kingdom of Denmark.#Failure of a Member State to fulfil obligations – Regulation (EU) No 1151/2012 – Quality schemes for agricultural products and foodstuffs – Article 13 – Use of the protected designation of origin (PDO) ‘Feta’ to designate cheese produced in Denmark and intended for export to third countries – Article 4(3) TEU – Principle of sincere cooperation.#Case C-159/20.