Book excerpt: The Fifth Edition continues to emphasize cases as the best way to teach antitrust law. The principal cases in this edition are the best and most current legal precedents. Judicial opinions are supplemented by historical and economic discussions and analyses. In particular, the notes discuss varying antitrust ideologies, confronting their defects and presenting their strengths. This new edition adds rich new material on: the transnational reach of the United States2 antitrust law; antitrust2s application to intellectual property; the Microsoft case and its history as it implicates monopolization, tying doctrine and market power analysis; expert testimony after Daubert and its relationship to antitrust summary judgment motions; and antitrust2s application in the field of regulated industries.