State law on copyright is preempted by federal copyright law; however, in some states, certain laws may still be used to fight piracy. Selected resources on state law follow:
LexisNexis 50 State Surveys, Statutes & Regulations
"[t]his survey links to state provisions addressing registration, protection and enforcement of copyrights for sound recordings not covered by federal provisions, with analysis of labeling requirements for manufactures and performers and royalty collection"
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Subject Compilations of State Laws