Manual of Patent Examining Procedure (MPEP)
Chapter 2500: Maintenance Fees

Ninth Edition of the MPEP, Revision 07.2015, Last Revised in November 2015

Chapter 2500: Maintenance Fees

2501: Introduction

2502-2503: [Reserved]

2504: Patents Subject to Maintenance Fees

2505: [Reserved]

2506: Times for Submitting Maintenance Fee Payments

2507-2509: [Reserved]

2510: Submission of Maintenance Fee Payments and Documents

2511-2514: [Reserved]

2515: Information Required for Submission of Maintenance Fee Payment

2516-2519: [Reserved]

2520: Maintenance Fee Amounts

2521: [Reserved]

2522: Methods of Payment

2523-2529: [Reserved]

2530: Special Acceptance of Maintenance Fee Payments Containing Informalities

2531: Payment Late or Insufficient

2532: Duplicate Payments

2533-2539: [Reserved]

2540: Fee Address for Maintenance Fee Purposes

2541: [Reserved]

2542: Change of Correspondence Address

2543-2549: [Reserved]

2550: Entity Status Discounts

2551-2559: [Reserved]

2560: Revocation of Power of Attorney and Withdrawal of Attorney

2561-2569: [Reserved]

2570: Maintenance Fee Payment Status Requests

2571-2574: [Reserved]

2575: Notices

2576-2579: [Reserved]

2580: Review of Decision Refusing to Accept and Record Payment of a Maintenance Fee Filed Prior to Expiration of Patent

2581-2589: [Reserved]

2590: Acceptance of Delayed Payment of Maintenance Fee in Expired Patent to Reinstate Patent

2591: Intervening Rights in Reinstated Patents

2592-2594: [Reserved]

2595: Forms