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Copyright Law

Copyright Term

When Does Copyright Expire and the Work "Enter the Public Domain"?

The existence and duration of copyright protection depends on (1) when the work was "created" (that is, "fixed in tangible medium of expression"), and with regard only to pre-1978 works, (2) whether and when it was "published" and (3) whether that publication included notice of copyright. (Work published before 1978 outside of the United States may be protected notwithstanding the omission of notice.)

The Sonny Bono Copyright Term Extension Act, which went into effect in October 1998, extends extant copyrights by 20 years, subject to a new exception which, under limited circumstances, permits educational copying within the final 20 years. This outline includes the extended terms.

Limited exception for libraries and archives only:

During the last 20 years of a copyright term, a library or archive may copy, distribute, display or perform a work for purposes of preservation, scholarship, or research, but only if it has determined, after reasonable investigation, that the following test is NOT met.

The exception does not apply if (a) the work is subject to normal commercial exploitation, (b) a copy is obtainable at a reasonable price, or (c) the copyright owner provides notice of either (a) or (b) in a manner to be determined by the Register of Copyrights.