How long does a copyright last?

How long does a copyright last?

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. As a general rule, for works created after January 1, 1978, copyright protection lasts for the life of the author plus an additional 70 years. For an anonymous work, a pseudonymous work, or a work made for hire, the copyright endures for a term of 95 years from the year of its first publication or a term of 120 years from the year of its creation, whichever expires first. For works first published prior to 1978, the term will vary depending on several factors.

Do I have to renew my copyright?

No. Works created on or after January 1, 1978, are not subject to renewal registration. As to works published or registered prior to January 1, 1978, renewal registration is optional after 28 years but does provide certain legal advantages.

source: Library of Congress