Case C-448/06: Judgment of the Court (First Chamber) of 17 July 2008  (reference for a preliminary ruling from the Verwaltungsgericht Köln (Germany)) — cp-Pharma Handels GmbH v Bundesrepublik Deutschland (Reference for a preliminary ruling — Validity of Regulation (EC) No 1873/2003 — Veterinary medicinal product — Regulation (EEC) No 2377/90 — Maximum residue limits of veterinary medicinal products in foodstuffs of animal origin — Progesterone — Restrictions on use — Directive 96/22/EC)