Case T-69/04: Judgment of the Court of First Instance of 8 October 2008 — Schunk and Schunk Kohlenstoff-Technik v Commission (Competition — Agreements, decisions and concerted practices — Market for electrical and mechanical carbon and graphite products — Plea of illegality — Article 15(2) of Regulation No 17 — Attributability of the unlawful conduct — Guidelines on the method of setting fines — Gravity and effect of the infringement — Deterrent effect — Cooperation during the administrative procedure — Principle of proportionality — Principe of equal treatment — Counterclaim to increase the fine)