Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Canisius Logo Andrew L Bouwhuis Library Canisius College | myCanisius | Desire2Learn

Copyright & Fair Use: Public Domain

Information on Copyright and Fair Use in the Classroom

Public Domain
The public domain consists of those works whose copyright protection has expired, as well as those which never had copyright protection in the first place. According to the U.S. Copyright Office, "Works in the public domain may be used freely and without the permission of the former copyright owner." 1  

       Examples include:
       Works published before 1923
       Publications created by the U.S. Government

For works created after January 1, 1978: life of the author plus 70 years 

     For joint works: life of the last surviving author plus 70 years

     For anonymous works, pseudonymous works, and works for hire: 95 years from the year of first publication or  
          120 years from the year of creation, whichever expires first


How long does a copyright last?
The U.S. Copyright Office indicates that "the term of copyright for a particular work depends on several factors, including whether it has been published, and, if so, the date of first publication." 2 Once a copyright expires, the work becomes part of the "Public Domain" and can be used freely.
 


References:

1 U. S. Copyright Office. (2010). Where is the public domain? Retrieved from http://www.copyright.gov/help/faq/faq-definitions.html#public_domain

2 U. S. Copyright Office. (2010). How long does a copyright last? Retrieved from http://www.copyright.gov/help/faq/faq-duration.html#duration