Judgment of the Court of First Instance (Third Chamber) of 8 July 2008 - Saint-Gobain Gyproc Belgium v Commission (Case T-50/03) Competition - Cartels - Plasterboard market - Decision finding an infringement of Article 81 EC - Fine - Gravity and duration of the infringement - Attenuating circumstances 1. Competition - Agreements, decisions and concerted practices - Agreements and concerted practices constituting a single infringement (Art. 81(1) EC) (see paras 42-50, 57, 105-106) 2. Competition - Fines - Amount - Determination - Need to take account of the turnovers of the undertakings concerned and to ensure that fines are proportional to those turnovers - None - Need to take account of the small size or undiversified nature of the business of the undertaking concerned - None (Council Regulation No 17, Art. 15(2); Commission Notice 98/C 9/03) (see paras 83-85, 88, 93-95) 3. Competition - Fines - Amount - Determination - Criteria - Gravity of the infringement - Mitigating circumstances - Passive or `follow-my-leader' role of the undertaking - Criteria for assessment (Council Regulation No 17, Art. 15(2); Commission Notice 98/C 9/03, point 3) (see paras 119-121,124-125) 4. Competition - Fines - Amount - Determination - Criteria - Gravity of the infringement - Mitigating circumstances - Termination of the infringement after the Commission's intervention - Conditions (Council Regulation No 17, Art. 15(2); Commission Notice 98/C 9/03, point 3) (see paras 133-136) Re: ACTION under Articles 229 EC and 230 EC for the reduction of the fine imposed on Gyproc by Commission Decision 2005/471/EC of 27 November 2002 relating to a proceeding under Article 81 [EC] against BPB plc, Gebrüder Knauf Westdeutsche Gipswerke KG, Société Lafarge SA and Gyproc Benelux NV (Case No COMP/E-1/37.152 - Plasterboard) (OJ 2005 L 166, p. 8) Operative part The Court: 1. Dismisses the action; 2. Orders Saint-Gobain Gyproc Belgium NV to pay the costs.