Judgment of the General Court (Eighth Chamber) of 24 March 2011 - IMI and Others v Commission (Case T-378/06) Competition - Agreements, decisions and concerted practices - Copper and copper alloy fittings sector - Decision finding an infringement of Article 81 EC - Fines - Relevant turnover - Leniency Notice - Guidelines on the method of setting fines - Equal treatment 1. Procedure - Objection of lis pendens - Same parties, subject-matter and submissions in two actions - Inadmissibility of the second action (see para. 29) 2. Competition - Fines - Amount - Determination - Discretion of the Commission - Limits - Respect for the principle of equal treatment (Council Regulation No 17, Art. 15(2)) (see paras 40-42) 3. Competition - Fines - Amount - Determination - Criteria - Duration of the infringement - Infringements of long duration - Increase by 10% of the starting amount per year - Discretion of the Commission (Council Regulation No 17, Art. 15(2); Commission Communication 98/C 9/03, Section 1B) (see paras 57-58) Re: APPLICATION for annulment in part of Commission Decision C(2006) 4180 of 20 September 2006 relating to a proceeding under Article 81 [EC] and Article 53 of the EEA Agreement (Case COMP/F-1/38.121 - Fittings), and also, in the alternative, for a reduction in the fine imposed on the applicants in that decision. Operative part The Court: 1. Dismisses the action; 2. Orders IMI plc, IMI Kynoch Ltd, Yorkshire Fittings Ltd, VSH Italia Srl, Comap SA and Simplex Armaturen + Fittings GmbH & Co. KG to pay the costs.