This article is missing information about the public domain status of documentary evidence in court cases. Please expand the article to include this information. Further details may exist on the talk page.(March 2018)
Works are in the public domain if they are not covered by the intellectual property right known as copyright, or if the intellectual property rights to the works have expired.[1] Works automatically enter the public domain when their copyright has expired.[2] The United States Copyright Office is a federal agency tasked with maintaining copyright records.
All works first published or released in the United States before January 1, 1929, have lost their copyright protection 95 years later, effective January 1, 2024. In the same manner, works published in 1929 will enter the public domain as of January 1, 2025, and this cycle will repeat until works published in 1977 enter the public domain on January 1, 2073. Works of corporate authorship will continue to adhere to the ninety-five year term following the 2073 date. Under current copyright law, beginning in 2049, 1978 and beyond works by creators who died seven decades earlier will expire each year.[3] For example, if a creator were to die in 2002, their works' copyright would last throughout the end of 2072 and enter the public domain on January 1, 2073.
Works that were published without a copyright notice before 1977 are also in the public domain, as are those published before March 1989 if the copyright was not registered within five years of the date of publication, and those published before 1964 if the copyright was not renewed 28 years later.[4][5]
^Boyle, James (2008). The Public Domain: Enclosing the Commons of the Mind. CSPD. p. 38. ISBN 9780300137408.
^"Edison voice recording is old, but not the oldest". nbcnews.com. October 26, 2012. Retrieved August 17, 2016.
^"For the First Time in More Than 20 Years, Copyrighted Works Will Enter the Public Domain". Smithsonian.
^"Copyright Term and the Public Domain in the United States | Copyright Information Center". copyright.cornell.edu.
^The Renewal Trapdoor
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