Judgment of the Court of First Instance of 5 March 2003 in Case T-237/01: Alcon Inc v Office for Harmonisation in the Internal Market (Trade Marks and Designs) (OHIM) (Community trade mark — Invalidity proceedings — "BSS" — Article 51 of Regulation (EC) No 40/94 — Absolute ground for refusal — Article 7(1)(d) of Regulation No 40/94 — Distinctive character acquired through use — Articles 7(3) and 51(2) of Regulation No 40/94)