Case T-256/04 P: Judgment of the Court of 13 February 2007 — Mundipharma v OHIM-Altana Pharma (RESPICUR) (Community trade mark — Opposition proceedings — Application for Community word mark RESPICUR — Earlier national word mark RESPICORT — Relative grounds for refusal — Likelihood of confusion — Article 8(1)(b) of Regulation (EC) No 40/94 — Proof of use of the earlier mark — Article 43(2) and (3) of Regulation No 40/94)