This comprehensive treatise on fair use doctrine in copyright is authored by leading expert William Patry, who has 28 years of experience with fair use. His earlier work on fair use was cited by the U.S. Supreme Court in Harper & Row, Publishers, Inc. v. Nation Enterprises. This book provides in-depth coverage of the four fair use factors, common law historical roots and the statutory provision, fair use (or fair dealing) in selected foreign countries, burden of proof and standards of review, comparison with the de minimis doctrine, transformative and productive uses, parody and satire, political uses, online uses, and photocopying.