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The copyright clause of the Constitution gives Congress the power to grant authors exclusive rights to their writings in order to “promote the progress of science and the useful arts” (article 1, section 8, clause 8). The primary purpose of copyright is to foster the dissemination of intellectual works for the public welfare. Giving authors exclusive rights to their works for a limited period of time is seen as a way of rewarding them for their contribution to society.
U.S.copyright law is found in the Copyright Act, Title 17 of the US Code. These exclusive rights set forth in section 106 of Title 17 include the rights to do, and to authorize others to do, the following: