Judgment of the General Court (Eighth Chamber) of 19 May 2010 - Outokumpu and Luvata v Commission (Case T-20/05) Competition - Agreements, decisions and concerted practices - Copper plumbing tube industry - Decision finding an infringement of Article 81 EC - Fines - Size of the relevant market - Aggravating circumstance - Repeat infringement 1. Procedure - Introduction of new pleas during the proceedings - Conditions (Rules of Procedure of the General Court, Arts 44(1) and 48(2)) (see paras 57-58) 2. Competition - Fines - Amount - Determination - Criteria - Gravity of the infringement - Aggravating circumstances - Repeat infringement (Art. 65 CS; Art. 81 EC; Council Regulation No 17, Art. 15(2); Commission Communication 98/C 9/03, para. 2) (see paras 61-63) 3. Competition - Fines - Amount - Determination - Criteria - Gravity of the infringement - Aggravating circumstances - Repeat infringement (Council Regulation No 17, Art. 15(2); Commission Communication 98/C 9/03, para. 2) (see paras 69-70) 4. Competition - Fines - Amount - Determination - Criteria - Gravity of the infringement - Size of the product market in question - To be taken into consideration (Council Regulation No 17, Art. 15(2)) (see para. 77) Re: APPLICATION for cancellation or reduction of the fine imposed on the applicants under Article 2(j) of Commission Decision C(2004) 2826 of 3 September 2004 relating to a proceeding pursuant to Article 81 [EC] and Article 53 of the EEA Agreement (Case COMP/E-1/38.069 - Copper plumbing tubes). Operative part The Court: 1. Dismisses the action; 2. Orders Outokumpu Oyj and Luvata Oy to pay the costs.