Unverified50% confidenceFactExact time
The standard protection period under U.S. copyright law is 70 years after the author's death, and the EU's is similar.
1
Sources
50%
Confidence
Long-term
Relevance
9/28/2026
First Seen
Sources
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Related Claims
Unverified公共领域是指知识产权保护期限已过、不再受版权法约束的作品集合，在大多数国家作者去世70年后作品进入公共领域75% similarUnverifiedThe US copyright protection period was extended from 14 years in 1790, to 28 years in 1831, to 56 years in 1909, then changed to life of the author plus 50 years in 1976, and finally extended to life of the author plus 70 years for individuals and 95 years for corporate works by the Sonny Bono Copyright Term Extension Act of 1998.75% similarUnverified美国直到 1989 年才加入伯尔尼公约，此前美国法律曾要求版权声明作为保护条件65% similarUnverified美国版权法第102条规定版权保护延伸至固定在有形表达媒介中的原创作品64% similarUnverifiedThe mainstream position of the U.S. Copyright Office and the EU tends to hold that mere prompt input is insufficient to constitute a creative choice in the sense of copyright law.63% similar
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