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For applications filed on or after June 8, 1995, Section 532(a)(1) of the Uruguay Round Agreements Act (Public Law 103-465, 108 Stat. 4809 (1994)) amended 35 U.S.C. 154 to provide that the term of a patent (other than a design patent) begins on the date the patent issues and ends on the date that is twenty years from the date on which the application for the patent was filed in the United States or, if the application contains a specific reference to an earlier filed application or applications under 35 U.S.C. 120, 121, or 365(c), twenty years from the filing date of the earliest of such application(s). This patent term provision is referred to as the "twenty-year term." Design patents have a term of fourteen years from the date of patent grant, except for any design patent issued from applications filed on or after May 13, 2015 (the date of entry into force of the 1999 Geneva Act of the Hague Agreement Concerning the International Registration of Industrial Designs ("Hague Agreement") as to the United States) has a term of fifteen years from the date of patent grant (see Public Law 112-211). See 35 U.S.C. 173 and MPEP § 1505. Under the Hague Agreement, qualified applicants may apply for design protection in the Contracting Parties to the Hague Agreement by filing a single, standardized international design application in a single language. Therefore, the term "design patents" includes patents issued from design applications filed under 35 U.S.C. 111 and international design applications filed under 35 U.S.C. 385. The Patent Law Treaties Implementation Act of 2012, Public Law 112-211, which implemented the provisions of the Hague Agreement, amended 35 U.S.C. 154(a)(2) to delete "section 120, 121, or 365(c)" and to insert "section 120, 121, 365(c), or 386(c)" and 35 U.S.C. 154(a)(3) to delete "section 119, 365(a), or 365(b)" and to insert "section 119, 365(a), 365(b), 386(a), or 386(b)."
All patents (other than design patents) that were in force on June 8, 1995, or that issued on an application that was filed before June 8, 1995, have a term that is the greater of the "twenty-year term" or seventeen years from the patent grant. See 35 U.S.C. 154(c). A patent granted on an international application filed before June 8, 1995, and which entered the national stage under 35 U.S.C. 371 before, on or after June 8, 1995, will have a term that is the greater of seventeen years from the date of grant or twenty years from the international filing date or any earlier filing date relied upon under 35 U.S.C. 120, 121 or 365(c). The terms of these patents are subject to reduction by any applicable terminal disclaimers (discussed below).
A patent granted on a continuation, divisional, or continuation-in-part application that was filed on or after June 8, 1995, will have a term which ends twenty years from the filing date of earliest application for which a benefit is claimed under 35 U.S.C. 120, 121, 365(c), or 386(c) regardless of whether the application for which a benefit is claimed under 35 U.S.C. 120, 121, or 365(c) was filed prior to June 8, 1995.
A patent granted on an international application filed on or after June 8, 1995 and which enters the national stage under 35 U.S.C. 371 will have a term which ends twenty years from the filing date of the international application. A continuation or a continuation-in-part application claiming benefit under 35 U.S.C. 365(c) of an international application filed under 35 U.S.C. 363 designating the United States will have a term which ends twenty years from the filing date of the parent international application.
Foreign priority under 35 U.S.C. 119(a)-(d), 365(a), 365(b), 386(a), or 386(b) is not considered in determining the term of a patent. Accordingly, an application claiming priority under 35 U.S.C. 365(a), 365(b), 386(a), or 386(b) has a term which ends twenty years from the filing date of the application in the United States and not the prior international application or international design application.
Domestic benefit under 35 U.S.C. 119(e) to one or more U.S. provisional applications is not considered in the calculation of the twenty-year term. See 35 U.S.C. 154(a)(3).
To determine the "original expiration date" of a patent subject to a terminal disclaimer, it is generally necessary to examine the language of the terminal disclaimer in the patent file history. If the disclaimer disclaims the terminal portion of the term of the patent which would extend beyond the expiration date of an earlier issued patent, then the expiration date of the earlier issued patent determines the expiration date of the patent subject to the terminal disclaimer. Before June 8, 1995, the terminal disclaimer date was printed on the face of the patent; the date was determined from the expected expiration date of the earlier issued patent based on a seventeen year term measured from grant. When 35 U.S.C. 154 was amended such that all patents (other than design patents) that were in force on June 8, 1995, or that issued on an application that was filed before June 8, 1995, have a term that is the greater of the "twenty year term" or seventeen years from the patent grant, the terminal disclaimer date as printed on many patents became incorrect. If the terminal disclaimer of record in the patent file disclaims the terminal portion of the patent subsequent to the full statutory term of a referenced patent (without identifying a specific date), then the date printed on the face of the patent is incorrect when the full statutory term of the referenced patent is changed as a result of 35 U.S.C. 154(c). That is, the referenced patent’s "twenty year term" is longer than the seventeen year term. In such a case, a patentee may request a Certificate of Correction under 37 CFR 1.323 to correct the information printed on the face of the patent. See Bayer AG v. Carlsbad Tech., Inc., 298 F.3d 1377, 64 USPQ2d 1045 (Fed. Cir. 2002). However, if the terminal disclaimer of record in the patent file disclaims the terminal portion of the patent subsequent to a specific date, without reference to the full statutory term of a referenced patent, then the expiration date is the date specified. But a patent term extension under 35 U.S.C. 156 may be applied to patent that is subject to a terminal disclaimer. See Merck & Co. v. Hi-Tech Pharmacal Co., 482 F.3d 1317, 82 USPQ2d 1203 (Fed. Cir. 2007).
Several decisions related to disclaimers are posted in the Freedom of Information Act (FOIA) section of the USPTO website (www.uspto.gov ).
See MPEP § 2710 et seq. for patent term extensions or adjustments for delays within the USPTO under 35 U.S.C. 154 for utility and plant patents issuing on applications filed on or after June 8, 1995. Patents that issue from applications filed before June 8, 1995, are not eligible for patent term extension or patent term adjustment under 35 U.S.C. 154.
See MPEP § 2750 et seq. for patent term extensions available under 35 U.S.C. 156 for premarket regulatory review. The patent term extension that may be available under 35 U.S.C. 156 for premarket regulatory review is separate from and will be added to any extension that may be available under former and current 35 U.S.C. 154. While patents that issue from applications filed before June 8, 1995, are not eligible for term adjustment under 35 U.S.C. 154, such patents may be extended under 35 U.S.C. 156.
Utility and plant patents issuing on applications filed on or after June 8, 1995, but before May 29, 2000, are eligible for the patent term extension provisions of former 35 U.S.C. 154(b) and 37 CFR 1.701. See MPEP § 2720. Utility and plant patents issuing on applications filed on or after May 29, 2000 are eligible for the patent term adjustment provisions of 35 U.S.C. 154(b) (effective May 29, 2000 and amended thereafter) and 37 CFR 1.702 -1.705. See MPEP § 2730. See Thomas D. Sykes v. Jon W. Dudas, 573 F. Supp. 2d 191, 89 USPQ2d 1423 (D.D.C. 2008).
Plant and utility patents issuing on applications filed before June 8, 1995 which have a term that is the greater of the "twenty-year term" (see MPEP § 2701) or seventeen years from patent grant are not eligible for term extension or adjustment due to delays in processing the patent application by the United States Patent and Trademark Office.
Since the term of a design patent is not affected by the length of time prosecution takes place, there are no patent term adjustment provisions for design patents. The term "design patents" includes patents issued from design applications filed under 35 U.S.C. 111 and international design applications filed under 35 U.S.C. 385.
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The twenty-year term of a patent issuing from an application filed on or after June 8, 1995, and before May 29, 2000, may be extended for a maximum of five years for delays in the issuance of the patent due to interferences, secrecy orders and/or successful appeals to the Patent Trial and Appeal Board (Board) or the federal courts in accordance with 37 CFR 1.701. See former 35 U.S.C. 154(b), as reproduced above. Extensions for successful appeals are limited in that the patent must not be subject to a terminal disclaimer. Further, the period of extension will be reduced by any time attributable to appellate review within three years of the filing date of the first national application for patent, and the period of extension for appellate review will be reduced by any time during which the applicant did not act with due diligence. The patent term extension that may be available under 35 U.S.C. 156 for premarket regulatory review is separate from and will be added to any extension that may be available under former and current 35 U.S.C. 154. See MPEP § 2750 et seq. 35 U.S.C. 154(b) was amended, effective May 29, 2000, to provide for patent term adjustment for applications filed on or after May 29, 2000, but the provisions of former 35 U.S.C. 154(b), as reproduced above, continue to apply to applications filed between and including June 8, 1995 and May 28, 2000. 35 U.S.C. 154 also was amended effective September 16, 2012 and January 14, 2013.
Examiners make no decisions regarding patent term extensions. Any patent term extension granted as a result of administrative delay pursuant to 37 CFR 1.701 will be printed on the face of the patent in generally the same location as the terminal disclaimer information. The term of a patent will be readily discernible from the face of the patent (i.e., from the filing date, continuing data, issue date and any patent term extensions printed on the patent).
If applicant disagrees with the patent term extension information printed on the front page of the patent, applicant may request review by way of a petition under 37 CFR 1.181. If the petition is granted, a Certificate of Correction pursuant to 37 CFR 1.322 will be issued.
Effective May 24, 2004, 37 CFR 1.701(a)(3) was amended to indicate that certain remands by the Board shall be considered "a decision in the review reversing an adverse determination of patentability" for patent term extension purposes.
Petitions and Certificates of Correction regarding patent term extension under former 35 U.S.C. 154(b) should be addressed to Mail Stop Patent Ext., Commissioner for Patents, P.O. Box 1450, Alexandria, Virginia 22313-1450.
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[Editor Note: The provision of 37 CFR 1.702(a)(1), as reproduced below, was effective on April 1, 2013 and applies to patent applications granted on or after January 14, 2013.]
