Judgment_paragraph 66 · Criminal proceedings against Max Rombi and Arkopharma SA, the party liable at civil law, and Union fédérale des consommateurs "Que Choisir ?" and Organisation générale des consommateurs (Orgeco), Union départementale O6 (C-107/97)

66It is true that, as Arkopharma has observed, the principle of the protection of legitimate expectations is the corollary of the principle of legal certainty which requires that legal rules be clear and precise, and aims to ensure that situations and legal relationships governed by Community law remain foreseeable (see Case C-63/93 Duff and Others v Minister for Agriculture and Food, Ireland, and the Attorney General [1996] ECR I-569, paragraph 20).