Judgment of the Court of First Instance (Fifth Chamber, Extended Composition) of 9 September 2009 - Diputación Foral de Álava and Others v Commission (Cases T-230/01 to T-232/01 and T-267/01 to T-269/01) State aid - Tax advantages granted by a territorial entity within a Member State - Reduction of the tax base for corporation tax - Decisions declaring aid schemes incompatible with the common market and requiring recovery of aid paid out - Trade association - Admissibility - Withdrawal of a plea in law - Classification as new aid or as existing aid - Principle of the protection of legitimate expectations - Principle of legal certainty - Principle of proportionality 1. Procedure - Subject-matter of the dispute - Alteration once proceedings have been started - Prohibition (Rules of Procedure of the Court of First Instance, Art. 48(2)) (see paras 80-88) 2. Procedure - Intervention - Admissibility - Reexamination after an earlier order acknowleding admissibility (Statute of the Court of Justice, Art. 40, second para.) (see para. 91) 3. Procedure - Intervention - Persons having an interest - Representative association having as its object the protection of its members - Admissibility in cases raising questions of principle liable to affect those members (Statute of the Court of Justice, Arts 40, second para., and 53, first para.) (see paras 93-100) 4. Procedure - Application to intervene - Formal requirements (Rules of Procedure of the Court of First Instance, Art. 116(4), second para.) (see paras 104-107, 110-111) 5. Actions for annulment - Natural or legal persons - Measures of direct and individual concern to them - Commission decision declaring an aid scheme incompatible with the common market - Action brought by a trade association set up to protect and represent its members (Art. 230, fourth para., EC) (see paras 117-128) 6. State aid - Concept - Grant by the public authorities of a tax exemption to certain undertakings - Included (Art. 87(1) EC) (see paras 134-136, 140, 195) 7. State aid - Examination of complaints - Obligations of the Commission - Statement of reasons (Arts 87(2) EC and 253 EC) (see paras 146-148) 8. State aid - Effect on trade between Member States - Adverse effect on competition - Criteria for assessment - Examination of an aid scheme taken as a whole(Art. 87 EC) (see paras 152-153) 9. State aid - Effect on trade between Member States - Adverse effect on competition - Aid of limited importance - Temporary Aid- No effect (Art. 87(1) EC) (see para. 158) 10. State aid - Concept - Selective nature of the measure - National legislation establishing a tax credit (Art. 87(1) EC) (see paras 169-173, 177-178) 11. State aid - Concept - Aid granted by regional or local bodies - Included (Art. 87(1) EC) (para. 189) 12. State aid - Concept - Specific tax measure - Selective nature of the measure - Justification based on the nature or arrangement of the tax system - Not included (Art. 87(1) EC) (see paras 190-191, 195-196) 13. State aid - Prohibition - Exceptions - Aid which may be considered compatible with the common market - Discretion of the Commission (Art. 87(3) EC) (see paras 210-211) 14. State aid - Prohibition - Exceptions - Aid capable of benefiting from the derogation under Article 87(3)(c) EC - Operating aid - Not included (Art. 87(3)(c) EC) (see paras 219-222) 15. State aid - Existing aid and new aid - Classification as existing aid - Criteria - Measure substantially amending an existing aid scheme - Not included (Arts 87 EC and 88 EC) (see paras 239-246) 16. State aid - Existing aid and new aid - Classification as existing aid - Criteria - Evolution of the common market (Arts 87 EC and 88 EC; Council Regulation No 659/1999, Art. 1(b)(v)) (see paras 251, 253, 257) 17. State aid - Administrative procedure - Right of the parties concerned to submit their comments (Art. 88 EC; Council Regulation No 659/1999, Art. 6(1)) (see paras 266-279) 18. Procedure - Intervention - Application to support the form of order sought by one of the parties (Statute of the Court of Justice, Art. 40, fourth para.; Rules of Procedure of the Court of First Instance, Art. 116(3)) (see paras 301-303) 19. State aid - Examination by the Commission - Examination procedure prior to the entry into force of Regulation No 659/1999 - Not subject to specific time-limits - Limit - Compliance with requirements of legal certainty - Obligation to conclude the preliminary examination undertaken following a complaint within a reasonable time (Art. 88 EC; Council Regulation No 659/1999) (see paras 305-315) 20. State aid - Recovery of unlawful aid - Aid granted in breach of the procedural rules of Article 88 EC - Possible legitimate expectation of the beneficiaries - Protection - Conditions and limits (Art. 88(2), first para., EC) (see paras 316-320) 21. State aid - Planned aid - Examination by the Commission - Preliminary review and main review - Duty to act within a reasonable time (Art. 88(2) and (3) EC) (see paras 339-344, 349) 22. State aid - Recovery of unlawful aid - Breach of principle of proportionality - None (Art. 88(2), first para., EC) (see paras 374-377) Re: APPLICATION in Cases T-230/01 and T-267/01 for annulment of Commission Decision 2002/892/EC of 11 July 2001 on the State aid scheme applied by Spain to certain newly established firms in Álava (OJ 2002 L 314, p. 1); application in Cases T-231/01 and T-268/01 for annulment of Commission Decision 2002/806/EC of 11 July 2001 on the State aid scheme applied by Spain to certain newly established firms in Vizcaya (OJ 2002 L 279, p. 35), and application in Cases T-232/01 and T-269/01 for annulment of Commission Decision 2002/540/EC of 11 July 2001 on the State aid scheme applied by Spain to certain newly established firms in Guipúzcoa (OJ 2002 L 174, p. 31). Operative part The Court: 1. Joins Cases T-230/01 to T-231/01, T-232/01, T-267/01, T-268/01 and T-269/01 for the purposes of judgment; 2. Dismisses the actions; 3. In Cases T-230/01 to T-232/01: - orders the Territorio Histórico de Álava - Diputación Foral de Álava, the Territorio Histórico de Vizcaya - Diputación Foral de Vizcaya, the Territorio Histórico de Guipúzcoa - Diputación Foral de Guipúzcoa and the Comunidad autónoma del País Vasco - Gobierno Vasco to each bear their own costs and to pay the costs of the Commission and the Comunidad autónoma de La Rioja; - orders the Confederación Empresarial Vasca (Confebask), the Cámara Oficial de Comercio e Industria de Álava, the Cámara Oficial de Comercio, Industria y Navegación de Vizcaya and the Cámara Oficial de Comercio, Industria y Navegación de Guipúzcoa to each bear their own costs; 4. In Cases T-267/01 to T-269/01 orders Confebask to bear its own costs and to pay the costs of the Commission and the Comunidad autónoma de La Rioja.