fair use
フェアユース
Abandonware
Berne three-step test
Copyright limitations, exceptions, and defenses in the U.S.
Copyfraud
Creative Commons
derivative work
Fair use (U.S. trademark law)
Scènes à faire doctrine
TEACH Act, an additional law for educational and governmental institutions that provides some additional copyright exceptions
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/suto3/google.iconfair use
image fair use
define fair use
wikipedia fair use
weblio fair use
kotobank fair use
jisho fair use