Introduction. - I. Cartels. - 1. Prohibition of horizontal agreements. - 2. Prohibition of vertical restraints. - 3. Legal exemptions. - 4. Notification obligation. - 5. Leniency. - II. Abuse of dominant position. - 6. Abuse of dominance. - 7. Definition of dominance. - 8. Presumption of single and collective dominance. - 9. Other factors. - 10. Collective dominance. - 11. Abusive practices. - 12. Abuse of IPRs. - III. Procedural issues and consequences. - 13. Competition law enforcement and procedure. - 14. Commitments. - 15. Subsequent judicial review. - 16. Legal Liabilities. - 16.1. Fines. - 16.2. Civil consequences. - 16.3. Private enforcement. - IV. Merger control. - 17. Concentrations. - 18. Scope and thresholds. - 19. Definition of concentration. - 20. Notification. - 21. Procedure. - 22. Substantive test. - 23. Decisions. - 24. Fines