美国版权法以 1976 年《版权法》为框架，辅以后续《数字千年版权法》（DMCA）等修订，确立了“作品原创性”与“有限时期独占”并行的双重理念。以下六个判例不仅奠定了现代美国版权法的重要原则，也对全球数字经济、内容创作与平台合规带来深远影响。

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The controversial leader energised thousands of supporters at a party conference in Birmingham on the weekend, as he rides ...