This title provides a clear and thorough exploration of the doctrinal and policy issues in American copyright law. In a style accessible to both students and practitioners, it covers every major topic in basic copyright courses: history, formalities, exclusive rights, fair use, civil and criminal enforcement, and federal preemption of state law. The authors also address major new issues that have emerged, including the rules of the Digital Millennium Copyright Act regarding circumvention of technological protections of copyrighted materials, and the principles of secondary liability, both in their basic form and as developed through application of the DMCA to Internet service providers. In addition, attention is given to the important points at which U.S. copyright law intersects with international intellectual property treaties.