Christopher S Yoo is the John H. Chestnut Professor of Law, Communication, and Computer & Information Science and the Founding Director of the Center for Technology, Innovation and Competition at the University of Pennsylvania. He has emerged as a leading authority on law and technology. His research focuses on how the principles of network engineering and imperfect competition can provide new insights into the regulation of the Internet. The author of three books and more than sixty articles and book chapters, he testifies frequently before Congress, the Federal Communications Commission, the Federal Trade Commission, and foreign regulatory authorities. Before entering the academy, Professor Yoo clerked for Justice Anthony M Kennedy of the Supreme Court of the United States and Judge A Raymond Randolph of the U.S. Court of Appeals for the D.C. Circuit. He also practiced law with Hogan & Hartson (now Hogan Lovells) under the supervision of now-Chief Justice John G. Roberts, Jr., and served as a professor at the Vanderbilt Law School. He is a graduate of Harvard College, the Anderson School at UCLA, and the Northwestern University School of Law.