作者nzcym

http://www.invention-protection.com/ip/publications/docs/Pay_Those_Patent_Maintenance_Fees.html
Pay Those Patent Maintenance Fees

© 2003, Gallagher & Dawsey Co., LPA
January 2003

A utility patent holder must pay issuance fees at 3 years and 6 months, 7 years and 6 months, and 11 years and 6 months after grant. The fees currently range from $890 for the first maintenance fee to $3150 for the last maintenance fee, with small entities paying half those amounts. The fees are due on or before the date the maintenance is due, although there is a six month grace period after the due dates, during which time the maintenance fees can be paid with, currently, a $130 (half for small entities) fee.

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