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