To: scion who wrote (5468 ) 3/7/2011 10:55:59 AM From: scion Read Replies (1) | Respond to of 53574 Patent Maintenance Fees 1551/2551 1.20(e) Due at 3.5 years Fee - 980.00 Small Entity Fee (if applicable)- 490.00 uspto.gov UNITED STATES PATENT AND TRADEMARK OFFICE FEE SCHEDULE Effective October 2, 2008 uspto.gov Maintain Your Patent All utility patents which issue from applications filed on or after December 12, 1980 are subject to maintenance fees, which must be paid to maintain the patent in force. These fees are due 3 1/2, 7 1/2 and 11 1/2 years from the date of the original patent grant. Fee payments must include both patent and application numbers. If the fee is being paid for reissue, the application number required is the reissue application number. To access information on the current fees and costs associated with your patent, access the fee schedule . Bibliographic data and the fee amounts due for a specific patent are available here, or by calling 571-272-6500 and selecting option #1, and then option #1 again when prompted by our automated system. Additional patent maintenance fee information is available on the Maintenance Fee Branch page. Three Ways To Pay View a weekly list of patents for which maintenance fees may now be paid: Go to the Official Gazette Notices, choose the year and week of interest, and select the "Notice of Maintenance Fees Payable" link located near the top of the Web page. View a weekly list of patents expired for failure to pay maintenance fees: Go to the Official Gazette Notices , choose the year and week of interest, and select the "Notice of Expiration of Patents Due to Failure to Pay Maintenance Fee" link located near the top of the Web page. uspto.gov