Fair use

The US copyright defence that weighs four factors: purpose and transformativeness, nature of the work, amount used and market effect 1. Courts apply it to AI training case by case; results so far turn on how the data was acquired and on each record.

Developed in
ch. 20, US training cases, dated
Chapters
ch. 20, Existing Law
Contrast with
TDM exception
Source
1 numbered reference, listed below

Where it is used

One chapter of the Body of Knowledge uses the term. Each link opens the first section that does.

Sources

  1. [1] 17 U.S.C. § 107, Limitations on exclusive rights: fair use (the four factors). Legal Information Institute, Cornell Law School. 2026. https://www.law.cornell.edu/uscode/text/17/107 (verified: secondary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). Fair use. In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/fair-use. CC BY 4.0

BibTeX

@misc{aige2026fairuse,
  author  = {Jorge García Aibar},
  title   = {{Fair use}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/fair-use}
}