What is the maximum length of time a copyright can last under the Copyright Act of 1976 including extensions?

The Copyright Act of 1976 established significant provisions regarding the duration of copyright protection. Under this act, the term for works created after January 1, 1978, is the life of the author plus an additional 70 years. For works created by corporate authors, which are known as "works for hire," the copyright term lasts for 95 years from the date of publication or 120 years from the date of creation, whichever is shorter. These extensions and the calculation of the duration lead to the maximum length of copyright lasting for a total of 95 years in certain cases. Therefore, when considering collective extensions and timeframes, the correct answer indicating the maximum practical duration under specified conditions is 99 years. This encompasses both the original term and the extensions provided through various amendments to copyright law over the years, thus allowing for a comprehensive understanding of how copyright protections can be extended in certain scenarios.