What does patent pending mean?
Patent pending means that a patent application has been filed with the USPTO and is awaiting examination and a decision. The designation tells competitors and the public that the inventor is seeking legal protection, but has not yet received it.
What patent pending does not do
The most important practical point: patent pending provides no actual right to exclude, and it cannot be enforced against a copyist while the application is pending. The right to exclude others from making, using, offering for sale, or selling the invention does not arise until the patent issues.
The phrase is informational. It signals that a claim is in progress, not that one has been granted. A competitor who copies during the application period faces no patent infringement liability from that copying alone.
Which applications trigger patent pending
The designation may be used as soon as a patent application has actually been filed with the USPTO. Both "patent applied for" and "patent pending" are recognized designations for this purpose, and both are subject to the same false marking prohibition.
Two common application types create patent pending status:
- Provisional applications. Filing a provisional application permits authorized use of patent pending while the provisional is pending. A provisional that is not followed by a timely nonprovisional filing automatically becomes abandoned, ending the patent pending period.
- Nonprovisional applications. A utility, design, or plant nonprovisional application places the invention in patent pending status as soon as it is on file with the USPTO, and that status continues while the application awaits examination and a decision. The status ends when the patent issues or the application is abandoned.
The provisional rights exception
Filing an application creates no right to exclude, but a later development can give the applicant a limited retroactive remedy: provisional rights.
After a nonprovisional application is published, the applicant may recover a reasonable royalty from any person who, with actual notice of the published application, infringes claims that are substantially identical to those ultimately issued. Two conditions are both required:
- The infringer had actual notice of the published application.
- The claims in the issued patent are substantially identical to those that were published.
If claims are narrowed during prosecution (which is common after office actions), the published and issued sets of claims may no longer be substantially identical, and provisional rights may not apply to the narrowed scope. Prosecution strategy therefore affects retroactive remedies, not just the final claim scope.
Publication also carries a separate consequence. Under § 122, the published application enters the public record and is made available to the public. A published U.S. application naming another inventor, effectively filed before a later application, is then available as prior art against that later application under § 102(a)(2).
When patent pending status ends
| Event | Effect on patent pending status |
|---|---|
| Patent issues | Full right to exclude begins; patent pending no longer applies |
| Application abandoned | Patent pending ends; the designation must be removed |
| Provisional lapses | Patent pending ends; designation must be removed |
Consequences of false marking
Using patent pending when no application has been filed, or when the application is no longer pending, violates 35 U.S.C. § 292(a). A party that suffers competitive injury from false patent pending marking may bring a civil action for damages.
The practical risk: a client who continues to use "patent pending" after the underlying application abandons (or after a provisional lapses without a nonprovisional follow-up) is exposed to civil liability if a competitor is harmed by that misrepresentation.
Practical notes
- Manage client expectations at the outset. Many clients treat patent pending as equivalent to patent protection. Explain that the phrase is informational: it signals that a claim is in progress and is not a legal shield against copying.
- Track application status on the docket. If the underlying application is abandoned, for example by missing a response deadline, patent pending marking must stop immediately. Build an application-status check into any product launch or ongoing marketing review.
- Leverage publication and actual notice. Once a nonprovisional application publishes, sending actual notice to known infringers starts the clock on provisional royalty recovery, provided the claims survive examination substantially intact. Factor this into licensing conversations that occur during prosecution.
- Verify before placing or renewing the marking. Confirm that the application is still live before using the designation on products, packaging, or promotional materials.