How long does a patent or trademark last?

The duration of Intellectual Property (IP) protection varies significantly depending on the specific type of asset being protected. The differing lifespans reflect the underlying policies of the systems: patents eventually expire to enrich the public domain, while trademarks can last indefinitely to continuously protect consumers.

For a standard Utility Patent, which protects how an invention works, the term of protection is generally 20 years from the earliest effective filing date of the Non-Provisional Patent Application. This 20-year term is a hard cap established by international treaty. Once the 20 years have passed, the patent expires, the invention enters the public domain, and anyone is free to manufacture or sell it.

It is crucial to understand that a utility patent does not automatically stay alive for 20 years. The USPTO requires the patent holder to pay escalating 'maintenance fees' to keep the patent in force. These fees are due at 3.5 years, 7.5 years, and 11.5 years after the patent is granted. If a maintenance fee is missed, the patent expires prematurely.

A Design Patent, which protects the ornamental visual appearance of an item, has a shorter lifespan. For design patents applied for on or after May 13, 2015, the term is 15 years from the date the patent is actually granted (issued) by the USPTO. Unlike utility patents, design patents do not require the payment of any maintenance fees; they simply run for their full 15-year term.

A Provisional Patent Application (PPA) is not a granted patent and provides no enforceable rights, but its lifespan is relevant to the timeline. A PPA automatically expires exactly 12 months after it is filed. It cannot be extended. The inventor must file a non-provisional application before this expiration to claim the benefit of the provisional's early filing date.

In contrast to patents, a Trademark can theoretically last forever. Because the purpose of a trademark is to identify the source of a product and prevent consumer confusion, the protection remains valid as long as the mark is continuously used in commerce to sell goods or services.

However, maintaining a federal trademark registration with the USPTO requires active management. The trademark owner must file specific maintenance documents to prove the mark is still in use. The first 'Declaration of Use' must be filed between the 5th and 6th year after registration. Subsequently, a renewal must be filed every 10 years.

If a trademark owner stops using the mark in commerce for an extended period (typically three consecutive years with no intent to resume), the mark may be considered 'abandoned.' An abandoned mark loses its legal protection, and the registration can be cancelled, allowing others to potentially claim the name.

A trademark can also die through 'genericide.' If a trademark owner fails to police their mark and the public begins using the brand name as the generic term for the product itself—as happened with 'escalator,' 'aspirin,' and 'thermos'—the trademark loses its distinctiveness and its legal protection is stripped away.

Copyright protection, while not the focus of the USPTO, also has a defined duration. For works created by an individual after 1978, the copyright lasts for the entire life of the author plus an additional 70 years. For works created by a corporation ('works made for hire'), the duration is 95 years from publication or 120 years from creation, whichever is shorter.