Copyright Act, limitations on exclusive rights: fair use (17 U.S.C. § 107)
Fair use is decided case by case on four factors. Factor four, the effect on the market for or value of the work, is where a working licensing market for training data counts.
Dated 17 Oct 2026Source checked 17 Oct 2026Basis: primary text
In the source's own words
“(1) the purpose and character of the use, including whether such use is of a commercial nature or is for nonprofit educational purposes; (2) the nature of the copyrighted work; (3) the amount and substantiality of the portion used in relation to the copyrighted work as a whole; and (4) the effect of the use upon the potential market for or value of the copyrighted work.”
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