Case C-783/19: Judgment of the Court (Fifth Chamber) of 9 September 2021 (Request for a preliminary ruling from the Audiencia Provincial de Barcelona — Spain) — Comité Interprofessionnel du Vin de Champagne v GB (Reference for a preliminary ruling — Agriculture — Protection of geographical indications and designations of origin for agricultural products and foodstuffs — Uniform and exhaustive nature — Regulation (EU) No 1308/2013 — Article 103(2)(a)(ii) — Article 103(2)(b) — Evocation — Protected Designation of Origin (PDO) ‘Champagne’ — Services — Comparability of products — Use of the trade name ‘Champanillo’)