Patent
20 years from the date of filing (historically, 17 years from date of issuance).
Copyright
- Individual: Life of author plus 70 years.
- Joint Work: Life of last survivor plus 70 years.
- Work made for hire: 95 years from date of publication, or 120 years from creation, whichever is shorter.
Trade Secret
Indefinite as long as trade secret remains secret.
Trademark
Indefinite, so long as use is continuous.