Case C-154/12: Order of the Court (Ninth Chamber) of 21 February 2013 (request for a preliminary ruling from the Tribunal de première instance de Bruxelles (Belgium) — Isera & Scaldis Sugar SA, Philippe Bedoret and Co SPRL, Jean Rigot, Mathieu Vrancken v Bureau d’intervention et de restitution belge (BIRB) (Article 99 of the Rules of Procedure — Agriculture — Common organisation of markets — Sugar — Regulation (EC) No 318/2006 — Article 16 — Regulation (EC) No 1234/2007 — Article 51 — Imposition of a charge on production — Validity — Lack of legal basis — Failure to state clear and unequivocal reasons — Infringement of the principle of non-discrimination — Infringement of the principle of proportionality)