Unverified50% confidenceFactExact time
转化性概念最早由Pierre Leval法官在1990年的学术论文中系统阐述，后被最高法院在1994年Campbell v. Acuff-Rose Music案中正式采纳
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50%
Confidence
Long-term
Relevance
8/18/2026
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Related Claims
UnverifiedThe concept of transformative use originates from the U.S. Supreme Court's 1994 ruling in Campbell v. Acuff-Rose Music.72% similarUnverifiedCampbell v. Acuff-Rose Music（1994年）确立了转化性使用的核心标准61% similarUnverifiedThe fair use doctrine can be traced back to the case law rule established by federal judge Joseph Story in the 1841 case Folsom v. Marsh, and was later codified in Section 107 of the U.S. Copyright Act in 1976.60% similarUnverified联邦第七巡回上诉法院法官理查德·波斯纳等人早在1990年代就开始质疑稀缺性原则的合宪性基础59% similarUnverified寒蝉效应（Chilling Effect）最早由美国联邦最高法院大法官威廉·道格拉斯在1952年'威曼诉厄普德格拉夫案'中系统阐述59% similar
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