Part I. Competition Policy: History, Objectives and the Law: 1. Introduction; 2. Brief history of competition policy; 3. Objectives of competition policy, and other public policies; 4. The main features of European competition law; 5. Exercises; Part II. Market Power and Welfare: Introduction: 6. Overview of the chapter; 7. Allocative efficiency; 8. Productive efficiency; 9. Dynamic efficiency; 10. Public policies and incentives to innovate; 11. Monopoly: will the market fix it all?; 12. Summary and policy conclusions; 13. Exercises; 14. Solutions of exercises; Part III. Market Definition and the Assessment of Market Power: 15. Introduction; 16. Market definition; 17. The assessment of market power; 18. Exercises; Part IV. Collusion and Horizontal Agreements: 19. Introduction; 20. Factors that facilitate collusion; 21. Advanced material; 22. Practice: what should be legal and what illegal?; 23. Joint-ventures and other horizontal agreements; 24. A case of parallel behaviour: wood pulp; 25. Exercises; Part V. Horizontal Mergers: 26. Introduction; 27. Unilateral effects; 28. Pro-collusive effects; 29. A more general model; 30. Merger remedies; 31. Merger policy in the European Union; 32. Case studies; 33. Exercises; Part VI. Vertical Restraints and Vertical Mergers: 34. What are vertical restraints?; 35. Intra-brand competition; 36. Inter-brand competition; 37. Anti-competitive effects: leverage and foreclosure; 38. Conclusions and policy implications; 39. Cases; 40. Exercises; Part VII. Predation, Monopolisation, and Other Abusive Practices: 41. Introduction; 42. Predatory pricing; 43. Non-price monopolisation practices; 44. Price discrimination; 45. US v. Microsoft; 46. Exercises; 47. Solutions of exercises; Part VIII. A Toolkit: Game Theory and Imperfect Competition Models: 48. Introduction; 49. Monopoly; 50. Oligopoly I: market competition in static games; 51. Oligopoly II: dynamic games; 52. Appendix.