Patent Pending: What It Means and What It Does Not Mean

“Patent pending” is a notice that an application for a patent has been filed with the USPTO and has not yet been resolved. In this article, the term means that notice and nothing more: no provision of Title 35 defines it, the USPTO says it has no legal effect, and patent protection does not start until a patent is granted. The rules described are United States rules, as published in October 2026.

Federal law still takes the notice seriously, because it punishes false use. The statute names the words in its false marking provision, 35 U.S.C. 292, which reaches the notice when no application has been made or when the application “is not pending,” if the words are used for the purpose of deceiving the public.

No statute defines the phrase, and the USPTO treats it as informational

Several USPTO pages describe the notice, and none sets out a legal definition. On its page about managing a patent, the Office says that some people mark articles “Patent Applied For” or “Patent Pending,” that these phrases have no legal effect and only inform the public that an application has been filed, and that protection does not start until the patent is actually granted.

In the glossary, the plain meaning is that someone has applied for a patent on an invention contained in the item. The entry adds a function: the notice serves as a warning that a patent may issue covering the item, and copiers should be careful because they might infringe if it does. According to the entry, the patent owner will stop using the phrase once the patent issues and will move to a statement that the item is covered by a numbered patent.

Inventors Assistance Center answers state when the notice may be used: once an application has been filed, and while it is pending. That answer is not limited to one type of application, and the same page adds that new matter cannot be added to an application after its filing date.

A pending application cannot be infringed, with one narrow exception after grant

Infringement under 35 U.S.C. 271(a) is defined by reference to a “patented invention” and to acts “during the term of the patent.” The term of a patent begins on the date the patent issues (35 U.S.C. 154(a)(2)), and 35 U.S.C. 281 gives the remedy by civil action to a patentee. Read together, these provisions leave an applicant with no infringement claim to bring until a patent exists.

Enforcement is outside the USPTO’s role: it does not enforce patents, and a federal court decides infringement.

One exception sits in 35 U.S.C. 154(d), headed “provisional rights,” which has no connection to provisional applications. A patent that later issues carries the right to a reasonable royalty from a person who, between publication of the application and issue, made, used, offered for sale, sold or imported the invention as claimed in the published application and “had actual notice of the published patent application.” The claims in the patent must also be substantially identical to the published claims, and the action must be brought within six years after the patent issues.

In Rosebud LMS v. Adobe (No. 2015-1428, Fed. Cir. 2016), which called this a narrow exception to the rule that damages run only during the patent term, the court held that actual notice means actual knowledge of the published application, which can exist without any affirmative act by the applicant. Constructive knowledge does not suffice, and neither does knowledge of a related patent.

A provisional filing supports the notice for twelve months at most

On its provisional application page, the USPTO states that the provisional permits the term “Patent Pending” to be applied in connection with the description of the invention, and lists authorized use of the notice for 12 months among the features. Examiners do not review it on its merits. It automatically becomes abandoned 12 months after its date by operation of law, and the USPTO says that period cannot be extended.

Under 35 U.S.C. 111(b)(5), unless the applicant makes a timely request to treat it as a nonprovisional, the provisional is regarded as abandoned 12 months after its date and is not subject to revival after that period. 37 CFR 1.137(g) goes further: a provisional will not be regarded as pending after twelve months under any circumstances. If the twelfth month ends on a Saturday, Sunday or federal holiday, the period runs to the next business day (MPEP 201.04).

A late nonprovisional can still claim the earlier benefit when it arrives within 14 months, by petition with a statement that the delay was unintentional (37 CFR 1.78). That route restores the benefit claim and does not revive the lapsed provisional.

On the statute’s wording, a lapsed provisional with nothing filed after it is an application that “is not pending.” Section 292 also requires a purpose of deceiving the public, and the decisions discussed below do not address a notice that continues after lapse. Design inventions fall outside this route, because the USPTO says provisionals may not be filed for them; a designer’s notice must rest on a nonprovisional design application.

Pending status ends with issue, abandonment or lapse, and the notice follows

An application stops being pending in these ways:

• The patent issues. The glossary says the owner will stop using the phrase at that point, and MPEP 203.04 describes an allowed application as continuing in that status until it issues as a patent unless it is withdrawn or abandoned for nonpayment of the issue fee.
• The applicant fails to reply to an Office action in time. Under 35 U.S.C. 133 and 37 CFR 1.135(a), the application is then regarded as abandoned, and MPEP 711.04(a) dates the abandonment to after midnight on the day the reply period, with any extensions, expired.
• The applicant files a written declaration of express abandonment under 37 CFR 1.138. According to MPEP 711.01, a properly signed letter takes effect when an appropriate official of the Office acts on it, not when the applicant signs it.
• The twelve months of a provisional expire.

Under 37 CFR 1.137, a petition may revive an abandoned application when the entire delay was unintentional, and MPEP 711.03(c) states that a delay resulting from a deliberately chosen course of action is not unintentional. How the notice is treated in the interval between abandonment and a granted petition is not stated in the statute or in the MPEP sections on abandonment, so that interval stays open for anyone who keeps using it.

False marking: the government collects the fine and competitors seek damages

Section 292(a) reaches a person who marks upon, affixes to or uses in advertising, in connection with any article, the words “patent applied for,” “patent pending,” or any word importing that an application has been made, when no application has been made or it is not pending, for the purpose of deceiving the public.

Under 35 U.S.C. 292(a) as amended in 2011, the offender “shall be fined not more than $500 for every such offense,” and “only the United States may sue for the penalty.” Section 292(b) lets a person who has suffered a competitive injury sue for damages adequate to compensate for it.

That arrangement dates from the America Invents Act of 2011 (Pub. L. 112-29, section 16(b)). Before it, any person could sue for the penalty and keep half. The amendment applies to all cases pending on or commenced on or after September 16, 2011, and in Brooks v. Dunlop Manufacturing (No. 2012-1164, Fed. Cir. 2012) the court held that ending those suits retroactively violated neither due process nor the Intellectual Property Clause.

Several Federal Circuit decisions explain how the section works. Forest Group v. Bon Tool, 590 F.3d 1295 (Fed. Cir. 2009), applied the text in force before 2011 and read the fine as a per-article penalty, while adding that a court need not impose $500 per article and that for inexpensive mass-produced articles a fraction of a penny per article may be proper.

In Pequignot v. Solo Cup, 608 F.3d 1356 (Fed. Cir. 2010), the court held that the statute requires a purpose of deceit, which knowledge of falsity alone does not establish, though such knowledge creates a rebuttable presumption of that purpose. Sukumar v. Nautilus (No. 2014-1205, Fed. Cir. 2015), decided under the new 292(b), held that a competitive injury requires competition: a potential competitor must have had intent to enter the market with a reasonable possibility of success and must have acted to do so.

All three arose under the provision on unpatented articles marked as patented. The “patent pending” paragraph ends in the same fine sentence and uses the same purpose-of-deceit wording, but the opinions do not discuss it.

Unpublished applications stay confidential, and third parties see little

Under 35 U.S.C. 122(a), the Office keeps pending files in confidence, and 37 CFR 1.14 generally preserves unpublished ones in confidence while limiting what the public may learn about their status. Publication follows promptly after 18 months from the earliest filing date for which a benefit is sought (122(b)), or earlier at the applicant’s request.

Some filings are not published: those no longer pending, those under a secrecy order, provisionals and design cases. A file can still become available to the public when a published patent document identifies it (37 CFR 1.14). An applicant who certifies that no foreign filing requiring publication will be made may also request nonpublication.

Public view in Patent Center covers issued patents and published applications. For an unpublished case that is pending or abandoned, the USPTO’s Application Assistance Unit determines whether the requester is entitled to information (MPEP 203.08). A person who sees the notice on a product therefore cannot assume that the file can be found.

Third parties can still act. Under 35 U.S.C. 122(e) and 37 CFR 1.290, any third party may submit patents, published applications or other printed publications of potential relevance, with a concise description of relevance. Submissions must arrive before the earlier of the notice of allowance or the later of six months after first publication and the first rejection of a claim.

As of October 2026 the fee is $195 for every ten items at the full rate and $78 for a small entity, per the USPTO fee schedule revised on August 14, 2026, and a first submission of three or fewer items is exempt with the required statement. Arguments against patentability are not permitted, the applicant need not reply, and provisionals cannot be the target (MPEP 1134.01).

Disclosure and sales keep counting while an application is pending

Section 102(b)(1) excepts from prior art a disclosure made one year or less before the effective filing date when the inventor or someone deriving from the inventor made it. The MPEP measures that year from the filing date of the earliest application to which a proper benefit or priority claim is made (MPEP 2151). Neither the statute nor that section provides that the notice extends or pauses the year.

On its provisional page, the USPTO warns that an applicant who discloses the invention publicly during the twelve months may lose more than the benefit of the provisional date if no nonprovisional application is filed in time, and may lose the right to patent the invention. Sales carry the same risk even when confidential: in Helsinn Healthcare v. Teva, 586 U.S. 123 (2019), the Supreme Court held that an inventor’s sale to a third party obliged to keep the invention confidential can qualify as prior art under 35 U.S.C. 102(a).

Because the year runs back from the first filing, the work that precedes a filing bears on every disclosure that follows. Precursal says on its home page that it helps users “explore ideas, uncover white space, research prior art, document human conception, and prepare stronger materials for patent counsel, all in one workspace,” and under “Walk into counsel better prepared” it names an inventor notebook and an invention disclosure.

Per the same page, Precursal is not a law firm, that outputs should be reviewed by the user and, where appropriate, qualified patent counsel, and that it does not guarantee novelty or patentability. Whether and when to file, and what to claim, remain questions for a registered patent attorney or agent.

How long an application stays pending

Patents Dashboard figures for September 2026 show traditional first-action pendency of 20.5 months, traditional total pendency of 28.8 months, and 33.6 months when requests for continued examination are counted (as of October 2026). Total pendency runs to final disposition, which means issue or abandonment, and includes time spent waiting for the applicant’s reply, so it is not a measure of time to grant.

Track One prioritized examination offers a faster route for original utility and plant applications. The USPTO says it allows a final disposition within about twelve months, caps accepted requests at 20,000 per fiscal year under a rule effective July 8, 2025 (90 FR 29990), and lists the request fee at $4,515 at the full rate, $1,806 for a small entity and $903 for a micro entity. Prioritized examination is not available for provisional or design applications (37 CFR 1.102(e)).

Checking status and finding free official help

Patent Center is where an applicant checks application status, and Patent Public Search covers issued patents and published applications; from November 7, 2026 that tool requires a sign-in with a USPTO account.

Pro Se Assistance Program staff provide outreach and education to applicants who file without a practitioner, though USPTO employees cannot give legal advice, and the Office always recommends a registered patent attorney or agent. The Patent Pro Bono Program, a nationwide network of regional programs, matches volunteer practitioners with financially underresourced inventors and small businesses. Its usual requirements are gross household income under three times the federal poverty guidelines, a demonstrated understanding of the patent system and the ability to describe the invention, and some regional programs apply different criteria. This description states published rules and does not replace advice on a particular application.

After grant, marking under 287(a) replaces the notice

Notice for the purpose of recovering damages is the subject of 35 U.S.C. 287(a), and “patent pending” does not satisfy it. The statute asks a patentee to give notice that an article is patented by fixing the word “patent” or the abbreviation “pat.” together with the patent number, or together with an Internet address that associates the article with the number. Without marking, no damages are recoverable unless the infringer was notified and continued to infringe, and filing an action counts as notice.

A 2014 USPTO report to Congress on virtual marking made the same separation: the false marking statute permits an article to be marked “patent pending,” while the marking statute requires “patent” or “pat.” for constructive notice. The Pequignot opinion also notes that packaging language reading “may be covered by one or more U.S. or foreign pending or issued patents,” without a patent number, cannot satisfy the marking statute.