Judgment of the Court (Sixth Chamber) of 12 February 2004 in Case C-363/99 (Reference for a preliminary ruling from the Gerechtshof te's-Gravenhage): Koninklijke KPN Nederland NV v Benelux-Merkenbureau (Approximation of laws — Trade marks — Directive 89/104/EEC — Article 3(1) — Grounds for refusal to register — Taking account of all the relevant facts and circumstances — Prohibition on registering a mark in respect of certain goods or services if they do not possess a particular characteristic — Word made up of components each of which describes characteristics of the goods or services concerned)