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Quicklinks
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Understanding Copyright |
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2b. What is not Copyrighted?
Works that are not "fixed in a tangible medium," such as:
- Impromptu speeches
- Singing in the shower
- Choreography that has not been notated or filmed
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Factual and commonly-known information:
- Weights and measures
- Addresses
- Dates
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Ideas, concepts, slogans, and inventions - although some of these are protected by patents or trademarks |
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Works in the public domain:
- Works published before 1923 in the United States
- Works for which the copyright term has expired without renewal
- Works the author has intentionally placed in the public domain
- Works that are products of the U. S. government
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