USPTO
Patent Maintenance Fees
Please enter both a patent number and its corresponding application number to do the following:
  • Click on ‘Retrieve Fees to Pay’ to pay a maintenance fee.
  • Click on 'Get Bibliographic Data' to obtain patent bibliographic data.
  • Click on ‘View Payment Windows’ to determine when maintenance fees are due.
  • Select the applicable year (4, 8 or 12) from the drop-down list box next to ‘Payment Window’ and click 'View Statement' to print a statement showing receipt of a maintenance fee payment.
Patent Number (exclude special characters; e.g. commas):
Application Number (must be 8 numeric digits - see NOTE below):
for Payment Window:
The Privacy Act of 1974 - as it relates to Maintenance Fees
The Paperwork Reduction Act of 1995 - as it relates to Maintenance Fees
Terms of Use:
The USPTO databases are intended for use by the general public. Due to limitations of equipment and bandwidth, they are not intended to be a source for bulk downloads of USPTO data. Individuals, companies, IP addresses, or blocks of IP addresses who, in effect, deny service to the general public by generating unusually high numbers (10,000 or more, roughly equivalent to viewing 1,000 patents) of daily database accesses (searches, pages, or hits), whether generated manually or in an automated fashion, may be denied access to these servers without notice.
For information about which patents are subject to maintenance fees and the time of payment for maintenance fees, please refer to Chapter 2500, Maintenance Fees, of the Manual of Patent Examining Procedure.

NOTE: The application number consists of a 2-digit series code PLUS the 6-digit serial number; e.g. if your series code is ‘08’ and your serial number is ‘123456’, the complete application number will be entered as ‘08123456.’ Do not use commas, slashes or other non-numeric characters.

In order to find the series code that is based upon the application filing date, use the following table:

Application Filing Date
From
To
Series Code
01/01/93 12/31/97 08
01/01/98 12/03/01 09
12/04/01 12/1/04 10
12/2/04 Present 11

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