The Copyright Law prohibits reproducing and distributing copyrighted works. However, the "Fair Use Doctrine", set forth in Section 107, provides a set of guidelines pursuant to which researchers, educators, scholars, and others may use copyrighted works without seeking permission or paying royalties. When evaluating whether or not the use of a copyrighted work is "fair use", there are four factors which must be considered::
The Fair Use Doctrine does not provide a right to use somebody else's work, but presents a defense against accusations of copyright violation for people who reasonably believed that their use of a copyrighted work was fair use. That means that if your use is challenged, you will have the burden of proving that your use qualified as "fair use".