Case C-785/18: Judgment of the Court (Fourth Chamber) of 29 January 2020 (request for a preliminary ruling from the Conseil d’État — France) — GAEC Jeanningros v Institut national de l’origine et de la qualité (INAO), Ministre de l’Agriculture et de l’Alimentation, Ministre de l’Économie et des Finances (Reference for a preliminary ruling — Agriculture — Protection of geographical indications and designations of origin for agricultural products and foodstuffs — Protected designation of origin ‘Comté’ — Minor amendment to a product specification — Action before national courts contesting an application for an amendment — Case-law of the national courts according to which the action becomes devoid of purpose when the European Commission has approved the amendment — Effective judicial protection — Obligation to rule on the action)