This edition of the book offers a comprehensive re-thinking of antitrust law, approaching competition problems in the market from a functional standpoint. The book has roots in prior editions, but it really offers a top-to-bottom reconsideration of how best to present modern issues in antitrust. After a brief introduction to the origins and objectives of antitrust law, the book launches the study of the field with a chapter on the concept of market power and the meaning of competition—building blocks that are essential to understanding everything else that follows in the course. It then devotes three chapters to the primary kinds of antitrust issues that arise from marketplace conduct: horizontal agreements among competitors, vertical distribution agreements, and exclusionary practices (whether done by a single firm or a group). Because of their importance to the economy, as well as to antitrust practice, mergers have their own chapter, which provides not only the important judicial opinions in this area, but also extensive materials from the Department of Justice and the Federal Trade Commission, the primary regulators of merger activity. The book then turns to two specialized issues that are of growing importance: the way in which U.S. antitrust laws operate in the global economy, and an innovative new chapter on intellectual property, technology, and platforms. It concludes with a chapter discussing the legal boundaries around the field of antitrust, including exemptions and immunities, and a chapter on the institutional framework for enforcement—the framework that translates words on a page into reality on the ground. The Seventh Edition retains and, where appropriate, adds to, the problems that have been a feature of this book for decades. To maximize instructor flexibility, the problems for each topic now appear at the end of the chapter.