|Brian Cockburn's principal role is to teach and advise faculty, administrators and students about copyright, and intellectual property.|
Copyright@JMU is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
The length of copyright is normally a function of the date of publication, the date of creation and the death of the author. In general:
There are complicating factors, and identifying whether material is protected or in public domain can be complex. For help, see Cornell’s Copyright Term and the Public Domain table.
The law governing copyright term is found in 17 USC Ch. 3.