Courts decide fair use by weighing four factors together. No single factor settles the
question.
1. Purpose and Character of the Use
Why did you use the work, and did you change it? A use that adds new meaning, expression, or
a new message is called transformative, and it is more likely to be fair.
- Transformative use. Commentary, criticism, parody, and education are strongly
favored.
- Commercial or not. Commercial use counts against fair use but does not rule
it out. Nonprofit educational use is more likely to qualify.
- Good faith. Was the material obtained lawfully?
2. Nature of the Copyrighted Work
What kind of work did you use?
- Factual works, such as news and documentaries, get less protection than creative works,
such as music and films
- Using a published work is more likely to be fair than using an unpublished one
3. Amount and Substantiality of the Portion Used
How much of the work did you use, and did you take its most important part?
- Using a small portion is more likely to be fair
- Using the most recognizable or important part (the “heart” of the work) counts
against fair use, even if the amount is small
- Using an entire work can sometimes be fair when the purpose requires it, as with parody
4. Effect on the Market
Does your use harm the market for the original, or act as a substitute for it?
- If your work competes with or replaces the original, that counts strongly against fair use
- If your work serves a different audience or purpose, market harm is less likely
- Courts also consider what would happen to the market if similar use became widespread