This guide is NOT intended to offer or substitute for legal advice. It is intended to provide information and guidance in the application of the U.S. copyright law.
Copyright is a set of rights provided by the laws of the United States (Title 17, U.S Code). The U.S. Copyright Office defines copyright as "a form of protection grounded in the U.S. Constitution and granted by law for original works of authorship fixed in a tangible medium of expression." It is derived from the Copyright Clause of the Constitution, which empowers Congress "[t]o promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries."
(Adapted from copyright.gov)
(Adapted from copyright.gov)