S3_Software_public+domain

Definition (Class Summary)
Ideas, information or work that are intangible. These are made public and free, available for anyone to use. The opposite of Public Domain is Copyright Restriction.

News Articles
In this article it is discussed how Disney plans to film its own reboot of the story. The original novel, written in 1899, copyright ended in 1956 and the characters and story are now of public domain. However, Warner Bros. and Disney are fighting over the film's rights.
 * Disney, Warner Bros. Fighting Over 'Wizard of Oz' Trademarks** (February 13, 2012)

Examples or Activities
The greatest example is the English language, that can be used by anyone and is not subject to any copyright restrictions.

An example of a public domain webpage is Project Gutenberg. It offers ebooks for free, but only distributes works of literature that have no copyright, or books whose copyright expired a long time ago like Charles Dickens'.