maintenance fees

2 topics · 2 sources

Intellectual Property

fees for maintaining in force a patent based on an application filed on or after December 12, 1980 --see MPEP 2500 for more

USPTO — United States Patent and Trademark Office Glossary

Law› Intellectual Property

Patent

In the United States, maintenance fees or taxes must be paid at 3.5, 7.5, and 11.5 years after issuance of a patent in order to maintain the patent in force.

Arnold Silverman and George Stacey — Understanding "Patentese" - A Patent Glossary