Article I, Section 8, Clause 8 of the United States Constitution, known as the Copyright Clause, empowers the United States Congress:
To 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.
This clause is also referred to as:
On August 18, 1787, the Constitutional Convention was in the midst of a weeks-long stretch of proposals to establish what would become the enumerated powers of the United States Congress. Three such proposals made on that day addressed what are now lumped together under intellectual property rights. One, by Charles Pinckney was "to secure to authors exclusive rights for a limited time". The other two were made by James Madison, who had previously served on a committee of the Congress established under the Articles of Confederation which had encouraged the individual states to adopt copyright legislation. Madison proposed that the Constitution permit Congress "to secure to literary authors their copyrights for a limited time", or, in the alternative, "to encourage, by proper premiums & Provisions, the advancement of useful knowledge and discoveries".
Both proposals were referred to the Committee of Detail, which reported back on September 5, 1787 with a proposal containing the current language of the clause. No record exists to explain the exact choice of words selected by the Committee on Detail, whose task was essentially no more than creating a draft Constitution by arranging the proposals that had been made into the most appropriate language. On September 17, 1787, the members of the Convention unanimously agreed to the proposed language, without debate, and this language was incorporated into the Constitution.
The clause actually confers two distinct powers: the power to secure for limited times to authors the exclusive right to their writings is the basis for U.S. copyright law, and the power to secure for limited times to inventors the exclusive rights to their discoveries is the basis for U.S. patent law. Because the clause contains no language under which Congress may protect trademarks, those are instead protected under the Commerce Clause. Some terms in the clause are used in archaic meanings, potentially confusing modern readers. For example, "useful Arts" does not refer to artistic endeavors, but rather to the work of artisans, people skilled in a manufacturing craft; "Sciences" refers not only to fields of modern scientific inquiry but rather to all knowledge.