Judgment of the Court (Fourth Chamber) of 15 April 2021.#Hengstenberg GmbH & Co. KG v Spreewaldverein eV.#Request for a preliminary ruling from the Bundesgerichtshof.#Reference for a preliminary ruling – Protection of geographical indications and designations of origin for agricultural products and foodstuffs – Regulation (EU) No 1151/2012 – First subparagraph of Article 49(3) and second subparagraph of Article 49(4) – First subparagraph of Article 53(2) – Amendment to a product specification – Spreewald gherkins (Germany) ‘Spreewälder Gurken (PGI)’ – Amendments which are not minor – Opposition proceedings – Statement of opposition to the amendment application – Appeal against the decision granting that application – Concept of ‘legitimate interest’.#Case C-53/20.