USPTO’s New One-Year Patent Petition Rule: Why Revival Now Requires More Proof
A patent application can become abandoned without anyone deciding that the invention lacks merit. A missed Office action response, an unpaid issue fee, or a breakdown in docketing can be enough. The United States Patent and Trademark Office (USPTO) has procedures for asking it to excuse certain unintentionally missed deadlines, but a 2026 rule has made waiting substantially more expensive—and more difficult to explain.
Effective August 13, 2026, the USPTO shortened its heightened-review threshold for specified petitions based on unintentional delay from more than two years to more than one year. The change applies to new petitions filed after the effective date. A petition filed more than one year after the relevant abandonment, expiration, or missed claim deadline now requires an additional factual explanation of the entire delay and carries a higher government petition fee. The governing notice is 91 Fed. Reg. 37826 (June 24, 2026).
This is not a new one-year cutoff for recovering rights. It changes the information and fees required when requesting discretionary relief. That distinction matters to inventors who discover that a patent application, issued patent, or priority claim has been compromised.
A shorter fuse for proving that the entire delay was unintentional
The underlying standard has not changed: the delay must actually have been unintentional, not merely inconvenient or regrettable. The 2026 rule changes when the USPTO routinely demands more than an assertion that it was unintentional. The prior administrative practice used a period of more than two years. The new practice calls for additional information once the relevant delay exceeds one year.
What information? The Office expects a credible explanation of the circumstances surrounding the entire delay—not just the original missed deadline. A petitioner may need to identify how the failure occurred, when it was discovered, who was responsible for responding, what happened after discovery, and why the time taken to file a grantable petition remained unintentional. The final rule explains that the inquiry promotes predictability for the public, which may have relied on a patent’s expired or abandoned status.
Suppose an application became abandoned on September 15, 2025, but the owner submits a revival petition on October 20, 2026. Because more than a year has elapsed since abandonment, the petition falls within the new heightened-explanation practice. The applicant must do more than say a deadline was missed by mistake: the later months must also be accounted for. These dates are hypothetical, but they illustrate why reconstructing the record is critical.
One easily overlooked point is that abandonment may occur by operation of law when a response or issue fee is not timely submitted. The clock does not necessarily begin with the date on which the USPTO mails a notice of abandonment. Its official patent-revival guidance expressly warns applicants against using the notice mailing date as a substitute for the actual abandonment date.
What the USPTO charges after the one-year mark
The rule also moves the trigger for the higher petition fee under 37 C.F.R. § 1.17(m)(1) from more than two years to more than one year. The published fee rates did not increase in this rulemaking; more petitions now fall into the higher-fee category. According to the USPTO’s fee schedule, revised August 14, 2026, the current government petition fees under § 1.17(m) are:
| Timing of covered petition | Undiscounted entity | Small entity | Micro entity |
|---|---|---|---|
| Delay of one year or less — § 1.17(m)(2) | $2,260 | $904 | $452 |
| Delay of more than one year — § 1.17(m)(1) | $3,000 | $1,200 | $600 |
For an undiscounted entity, crossing the threshold adds $740 to the petition fee. The corresponding differences are $296 for a qualifying small entity and $148 for a qualifying micro entity. Other fees may also be due, including a late maintenance fee, if the petition concerns an expired patent. The proper entity classification and the applicable current fee must be confirmed before filing; the amounts above are not a quotation for all the work required to restore a patent right.
There is also a distinction between eligibility to use certain electronic petition options and the general one-year fee threshold. The USPTO says selected revival ePetitions can be filed if submitted less than one year after abandonment; that electronic-filing limitation should not be confused with the fee schedule’s one year or less classification or with a substantive prohibition on later petitions.
The rule reaches beyond an abandoned patent application
It is tempting to treat this as a narrow change to applications that were accidentally abandoned. The final rule is broader. It covers specified petitions under several regulations, and each has a different event from which the year is measured.
Revival of abandoned applications or interrupted reexamination proceedings
Under 37 C.F.R. § 1.137, the USPTO can consider revival of an unintentionally abandoned patent application, or relief for a reexamination proceeding affected by an untimely response. The application petition generally must include the missing reply unless already filed, the applicable fee, a statement concerning the entire unintentional delay, and any required terminal disclaimer. A detailed explanation becomes obligatory when the relevant lapse exceeds one year. For businesses managing multiple applications, the issue is not simply whether prosecution can restart, but how to reconstruct events without making an overbroad representation.
Expired patents after unpaid maintenance fees
A utility patent can expire if its required maintenance fee remains unpaid at the end of the statutory grace period. Under 37 C.F.R. § 1.378, the owner may petition for acceptance of an unintentionally delayed payment. For the 2026 rule, the one-year period is measured from expiration for nonpayment, not from the beginning of the ordinary maintenance-fee payment window. The USPTO’s delayed-maintenance-fee petition guidance also explains that separate petition fees are required if multiple maintenance fees have gone unpaid on the same patent. That can make procrastination costly.
Delayed foreign-priority and domestic-benefit claims
The missed filing may be a claim to an earlier filing date, rather than a failure to prosecute. Rules 37 C.F.R. § 1.55(e) and 1.78(c) or (e) govern certain unintentionally delayed foreign-priority and domestic-benefit claims. The heightened threshold is counted from the date the particular priority or benefit claim was due. This is not the same inquiry as whether an earlier application was timely filed. Because a priority date may affect what qualifies as prior art, mistakes involving these claims can reach beyond administrative inconvenience and influence patentability and portfolio value.
International design applications
Specified missed deadlines under the Hague Agreement, addressed in 37 C.F.R. § 1.1051, are also included. An international design applicant seeking to excuse failure to act as to the United States must evaluate the relevant prescribed time limit, what occurred afterward, and whether the entire delay can be characterized as unintentional. Design filings should not be assumed to follow every procedural feature of a domestic utility application; they have their own rule and record.
One year is a disclosure-and-fee threshold, not a rescue deadline
The most dangerous misreading of the rule would be that patent rights cannot be revived after a year. That is not what the USPTO adopted. A petition made after one year is not automatically barred merely because of its age. It faces a required fuller explanation and the higher fee, and the Office must still be satisfied that the governing conditions for relief are met.
The opposite reading is also wrong: a petition filed in the first year is not automatically approved. Even within a year, the USPTO may ask for supporting information whenever circumstances cast doubt on whether the delay was unintentional. A deliberate business decision to abandon an application, followed by regret after market conditions change, does not become unintentional merely because the owner acts quickly. Likewise, if someone discovers an accidental lapse and consciously chooses to defer action, that later period may become the central issue.
This matters when a patent portfolio is being sold, licensed, financed, or enforced. A prospective purchaser should not treat a revival petition as proof the right has already been restored. An expired patent presents a different diligence issue from a pending application with a curable defect. Tucker Law’s patent licensing practice addresses portfolio transactions in which these distinctions can affect risk allocation, warranties, and deal value.
Building the factual record before signing a petition
When the problem is first discovered, the urgent task is to establish the chronology. Obtain the USPTO file history, the operative Office action or payment record, the last legally available date to respond, proof of any attempted submission, electronic receipts, and communications among the inventor, company, counsel, and docketing service. Determine the actual abandonment, expiration, or claim-due date rather than relying on a notice date or internal spreadsheet alone.
Next, reconstruct how knowledge traveled. An administrative error may explain the first missed deadline but not necessarily months of later inactivity. The person making the unintentional-delay statement needs a reasonable basis for describing both periods. The USPTO’s final rule emphasizes the existing duty of candor and good faith when making these representations; it also notes that an inaccurate assertion can create later enforceability problems. The goal is a supportable explanation, not a formulaic apology.
Then identify the precise relief required. The petition to revive an application is not interchangeable with a request to accept a delayed maintenance fee or a delayed priority claim. Fees, forms, required replies, and record submissions differ. A complex file may involve multiple defects, and curing one does not necessarily cure the rest. Owners should also consider whether a related continuing application, foreign counterpart, or pending appeal changes the available strategy; that assessment belongs in the broader patent application and prosecution process, not merely in a fee-payment exercise.
Finally, preserve the completed filing, payment confirmation, and USPTO decision. A pending petition is not the same thing as a granted petition. For a patent that has expired, a later reinstatement may also create questions about intervening rights and events occurring while the patent was lapsed. In subsequent patent litigation, those dates and representations can matter.
What patent owners should take from the August 2026 change
The practical lesson is more precise than “file sooner.” When a covered patent deadline has been missed, the owner should identify the exact regulatory remedy, calculate elapsed time from the legally relevant event, determine whether an additional explanation and the higher fee are triggered, and evaluate whether the facts truly support an unintentional-delay representation. The governing one-year test is now part of the cost and proof calculation for new petitions filed after August 13, 2026.
Anyone relying on an older patent-practice guide that discusses an automatic two-year threshold should check it against the current rule. The older period no longer describes the USPTO’s mandatory additional-information practice for the covered petitions. The Office’s updated petition pages, fee schedule, and final Federal Register notice are better starting points than an undated summary.
Tucker Law works with inventors and businesses on patent protection, prosecution strategy, and patent-related disputes. If an application appears abandoned, a patent has expired for nonpayment, or a priority claim may have been missed, contact Tucker Law promptly so the record and available options can be evaluated before additional delay compounds the problem.
This article is general legal information, not advice for a particular patent or application. Government fees and USPTO procedures should be confirmed against official materials before filing.
