windyMagician
2:02
Simple English definitions for legal terms
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When a work is "based on" an earlier work, it is derived from and similar to that earlier work. However, to be considered based on an earlier work, the later work must have substantially similar expression, not just substantially similar ideas. This means that if a work is based on an earlier work, it infringes the copyright in the earlier work.
These examples illustrate how a work can be based on an earlier work by using similar expression or ideas.