What are the Four Factors?
The Four Factors laid down by Section 107 of
copyright law are those to be used to determine whether a use of
copyright material in a particular case is a "fair use" or
not.
- the purpose and character of the use, including
whether such use is of a commercial nature or is for nonprofit
educational purposes;
- the nature of the copyrighted work;
- the amount and substantiality of the portion used
in relation to the copyrighted work as a whole; and
- the effect of the use upon the potential market
for or value of the copyrighted work. 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unpublished shall not itself bar a finding of fair use if such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.
Only the courts can determine whether a particular
use is a fair use or not.
Douglas Bennett, in a section of the essay,
"Fair Use in Digital
Environments," reproduced on this page,
speaks about the
1976 effort to
produce guidelines for the fair use of
material.
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Introduction