Notwithstanding the provisions of sections 106 and 106A,
the fair use of a copyrighted work, including such use by
reproduction in copies or phonorecords or by any other means
specified by that section, for purposes such as criticism,
comment, news reporting, teaching (including multiple copies
for classroom use), scholarship, or research, is not an infringement of copyright.
In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include-
The fact that a work is unpublished shall not itself bar a finding of fair use
if such finding is made upon consideration of all the above factors.
(Pub. L. 94-553, title I, §101, Oct. 19, 1976, 90 Stat. 2546; Pub. L. 101-650, title VI, §607, Dec. 1, 1990, 104 Stat. 5132; Pub. L. 102-492, Oct. 24, 1992, 106 Stat. 3145.)