Judgment_paragraph 76 · Commission of the European Communities v BASF AG, Limburgse Vinyl Maatschappij NV, DSM NV, DSM Kunststoffen BV, Hüls AG, Elf Atochem SA, Société Artésienne de Vinyle SA, Wacker Chemie GmbH, Enichem SpA, Hoechst AG, Imperial Chemical Industries plc, Shell International Chemical Company Ltd and Montedison SpA (C-137/92 P)

76Authentication of acts referred to in the first paragraph of Article 12 of the Commission's Rules of Procedure therefore constitutes an essential procedural requirement within the meaning of Article 173 of the EEC Treaty breach of which gives rise to an action for annulment.