Applications for patent term extension and patent terms extended under 35 U.S.C. § 156

Applications for patent term extension under 35 U.S.C. § 156 may be filed for patents on certain human drugs, food or color additives, medical devices, animal drugs, and veterinary biological products to restore to the terms of those patents some of the time lost while awaiting premarket government approval from a regulatory agency. See the Manual of Patent Examining Procedure (MPEP) section 2750 et seq. for more information. The USPTO plans to update the list of applications for patent term extension and list of patent terms extended under 35 U.S.C. § 156 on a quarterly basis.

List of applications for patent term extension

The following spreadsheet is a list of all applications for patent term extension under 35 U.S.C. § 156 that have been filed within the past five years. The status of each application, including disposition—such as granted, denied, withdrawn, pending—may be determined by reviewing the electronic file wrapper in Patent Center. Patents that have received certificates of patent term extension are identified in the list further down this web page.  

• PTE applications during last five years (updated May 2023) [MS Excel]

List of patent terms extended under 35 U.S.C. § 156

NOTE: This list is for informational purposes only and is not intended to have legal effect. Furthermore, this list does not include patents that have been extended only under § 156(e)(2) or § 156(d)(5) (patents that have only received an interim extension). A copy of the certificate of extension should be included in the "correction" section of the patent's images. All patent images can be found in the Patent Full Text and Image Database. 

• PTE certificates issued (updated May 2023) [MS Excel] (spreadsheet file of the list that appears below)

Please note that nearly all patent term extension applications are available in Patent Center.

For further information, contact Ali Salimi at (571) 272-0909 or ali.salimi@uspto.gov, or Raul Tamayo at (571) 272-7728 or raul.tamayo@uspto.gov.

Additional information concerning patent expiration dates of human drug products can be obtained from the Food and Drug Administration's Center for Drug Evaluation and Research. The Patent and Exclusivity Addendum of the "Orange Book," the Approved Drug Products with Therapeutic Equivalents Evaluations includes an alphabetical listing of human drug products according to generic name with related patent information. 

Additional information concerning patent expiration dates of animal drug products can also be obtained from the Food and Drug Administration's Center for Veterinary Medicine. The Patent Information section of the “Green Book,” which documents Approved Animal Drug Products, includes a listing by application number of animal drug products with the trade name, patent number, and patent expiration date.