Patent pending lasts exactly 12 months if you filed a provisional application, and it has no fixed end date if you filed a non-provisional one. For non-provisional filings, the status runs through the entire examination process, which averaged 27.9 months in early fiscal year 2026 for straightforward cases and 32.7 months for applications that required an extra round of examination.1United States Patent and Trademark Office. Patents Pendency Data How long you actually stay patent pending depends on which type of application you filed, how quickly the USPTO gets to it, how fast you answer the examiner, and whether you file follow-on applications that keep the process going.
Provisional Applications Last Exactly 12 Months
A provisional patent application gives you patent pending status for 12 months from the filing date, and that deadline cannot be extended for any reason.2United States Patent and Trademark Office. Provisional Application for Patent The USPTO does not examine a provisional on its merits. It just holds a filing date and lets you use the “patent pending” label while you prepare a full application.
Before that 12-month window closes, you need to file a non-provisional application that references the provisional. Miss the deadline and the provisional is treated as abandoned, cannot be revived, and any patent pending status it provided is gone.3Office of the Law Revision Counsel. 35 USC 111 – Application You could still file a new application afterward, but you would lose the earlier filing date, which matters if someone else filed a similar application or publicly disclosed a similar invention in the meantime.
Non-Provisional Applications Last Through Examination
Once you file a non-provisional, patent pending status begins and continues until one of three things happens: the USPTO grants your patent, you abandon the application, or a final rejection is affirmed on appeal. No statutory clock automatically ends the process after a set number of months.
Timing still follows recognizable patterns. The USPTO’s early fiscal year 2026 average total pendency was 27.9 months without a Request for Continued Examination, and 32.7 months with one.1United States Patent and Trademark Office. Patents Pendency Data Complex technologies run longer. In February 2026, biotechnology applications waited an average of nearly 27 months just for the examiner’s first response, while business-method applications averaged under 19 months.4United States Patent and Trademark Office. First Action Pendency by Technology Center
Those are averages. Some applications clear in under two years. Others, especially in crowded fields, stay patent pending for four or five years while the applicant works through rejections and appeals.
The Three Ways Patent Pending Ends
The Patent Is Granted
If the USPTO approves your application, patent pending converts to an issued patent. You also have to pay the issue fee within three months of the notice of allowance; miss that and the application goes abandoned instead.
The Application Is Abandoned
If you miss a response deadline, fail to pay fees, or stop prosecuting the application, it goes abandoned and patent pending ends. Abandonment is not always permanent. You can petition to revive by showing the delay was unintentional, filing the overdue response, and paying a petition fee. The fee is lower if you file within two years of the abandonment date.5United States Patent and Trademark Office. Revival Based on Unintentional Delay Successful revival restores patent pending as if the abandonment never happened.
Final Rejection With Appeals Exhausted
If the examiner issues a final rejection and you lose your appeal to the Patent Trial and Appeal Board and any subsequent court appeal, patent pending ends on that application. You can file a new application covering a different aspect of the invention, but you cannot force the USPTO to grant claims it has finally rejected.
Office Action Deadlines Can Shorten the Timeline
The examiner will almost certainly issue at least one Office Action explaining why some or all of your claims are being rejected. Your response deadline is what keeps patent pending alive. The statutory maximum is six months, but the USPTO shortens that in nearly all cases, typically to three months.6United States Patent and Trademark Office. Manual of Patent Examining Procedure – Section 710 – Period for Reply
You can buy more time in one-month increments by paying extension fees, up to the six-month statutory ceiling.7eCFR. 37 CFR 1.136 – Extensions of Time Each extension gets more expensive. Fail to respond within the deadline including any extensions, and the application is abandoned.
Continuations Can Extend Patent Pending for Years
You can file continuation applications that keep patent pending alive well beyond the original examination. A continuation is a new application that claims the benefit of your original filing date, and you can file it as long as the original application has not yet been granted, abandoned, or terminated.8Office of the Law Revision Counsel. 35 USC 120 – Benefit of Earlier Filing Date in the United States
In practice, an inventor can hold patent pending on an invention for many years through successive continuations. Each one restarts examination on the same or modified claims while preserving the priority date. Large companies routinely use this to pursue different claim angles on the same underlying invention. The trade-off: the 20-year utility patent term still runs from the original filing date, so time spent patent pending shortens the years of enforceable protection you get afterward.
Foreign Filings Run on Their Own 12-Month Clock
If you plan to seek patent protection outside the United States, your domestic filing date also starts a separate 12-month clock. Under the Paris Convention and the Patent Cooperation Treaty, you must file an international application within 12 months of your earliest priority date to keep the benefit of that date abroad.9World Intellectual Property Organization. PCT Applicant’s Guide – National Phase – Rule 4.10(a) This runs alongside the provisional deadline, so if you filed a provisional, decisions about the U.S. non-provisional and any international filings fall inside the same 12-month window.
Keep the Label Off Products Once Status Ends
Marking a product “patent pending” when you have not actually filed an application, or leaving the label on after your application has been abandoned, is a federal offense. The fine is up to $500 for each act of false marking, and only the United States government can bring the enforcement action.10Office of the Law Revision Counsel. 35 USC 292 – False Marking The statute requires intent to deceive the public, so honest mistakes are not punishable. Even so, remove “patent pending” from products and marketing materials promptly once an application is abandoned or finally rejected.