Copyright has a long tradition. The first U.S. copyright law came into effect on May 31, 1790.

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An excerpt from U.S. Copyright Law:  TRANSFER OF COPYRIGHT 

YOU CANNOT COPYRIGHT AN IDEA OR A TITLE. 
            Plagiarism occurs when someone copies the exact wording from another source, without attribution. Even with attribution, you cannot copy substantial portions of anyone else's writing, and the law varies on how much amounts to "substantial." Always obtain permission!
            Sometimes an author of a non-fiction books is upset when someone else writes about the same subject. But using the same sources does not constitute plagiarism. No one can "own" sources or access to original historical documents.

TRADEMARKS  protect a service or product and must always be associated with that service or product.  

DO NOT USE SONG LYRICS OR SONG TITLES WITHOUT PERMISSION 
            Copyright on songs is complex. Original publishers who owned the rights have sold to others (the Beatles' work to Michael Jackson, for example) and one has to do a Google search to find out who to contact to obtain permission. 
            Notice that when you see a song lyric quoted in a novel, there's a long permission at the front of the book, indicated who owns the rights. The same thing appears in the credits of movies, if you happen to notice, where every song sang or played is credited with the author, rights' owner, and performer.

PROTECTION OF PHOTOGRAPHS 

COPYRIGHT IN SOUND RECORDINGS

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