Patent Pending vs. Patented: What's the Difference and Why It Matters

What "Patent Pending" Actually Means

"Patent pending" is a notice that a patent application has been filed with the USPTO and is awaiting examination and determination. The status begins the moment your application — either a provisional or a non-provisional utility patent application — is officially received and assigned a filing date by the USPTO.

A provisional application, once filed, immediately entitles you to use "patent pending." However, a provisional alone never becomes a patent. You must file a non-provisional application within 12 months to keep that application chain alive. A non-provisional application also entitles you to use "patent pending" from the moment it is filed, and it remains "patent pending" throughout the entire examination process — which typically takes 2 to 3 years.

The phrase communicates one important fact to the market: an inventor has taken concrete legal steps to pursue patent protection, and a patent may eventually issue. That potential future patent is meaningful because — as we will discuss below — damages can sometimes be collected retroactively for infringement that occurred during the patent pending period, once the patent actually issues.

How You Obtain Patent Pending Status

Patent pending status is obtained by filing one of the following with the USPTO:

• A provisional patent application: A lower-cost filing that establishes a priority date and grants 12 months of patent pending status. No examination occurs. The provisional must be followed by a non-provisional application within 12 months or it expires. See our article on what a provisional patent application is for a full explanation.
• A non-provisional (regular) patent application: The full application that enters the examination queue. Patent pending status lasts from the filing date until the patent either issues or is finally rejected and abandoned.
• A PCT (Patent Cooperation Treaty) application: An international application filed under the PCT, which enables deferred entry into national/regional patent offices worldwide. A PCT application also supports patent pending status.

There is no registration process, certificate, or approval from the USPTO required to begin using "patent pending." The filing of an application — confirmed by your filing receipt — is all that is needed. You simply mark your product, packaging, or marketing materials with "Patent Pending" or "Pat. Pend."

What Patent Pending Protects — and Does Not Protect

This is the critical misunderstanding many inventors have. Patent pending status does not give you the right to sue anyone. You cannot send a cease-and-desist letter based solely on a patent pending application and threaten infringement liability — because no patent has issued, there is nothing to infringe.

What patent pending does accomplish:

• Priority date protection: Your filing date is locked in. If a competitor files a similar application after your filing date, you have priority in the U.S. patent system under the first-inventor-to-file rule.
• Potential retroactive damages: Under 35 U.S.C. § 154(d), if your published non-provisional application contains claims that are substantially identical to the claims in your issued patent, and a competitor had actual notice of the published application, you may be able to collect "reasonable royalties" for infringement that occurred after the application was published (typically 18 months after filing) and before the patent issued. This is not automatic — it requires that the issued patent claims substantially match the published application claims, and that the infringer had actual knowledge of the application.
• Market deterrence: "Patent Pending" signals to competitors that pursuing a copycat product carries risk. The marking does not create legal liability for competitors, but it puts them on notice that a patent may issue and that retroactive royalties may be at stake.

A competitor who decides to manufacture and sell a product during your patent pending period takes a calculated risk. If your patent issues with broad claims covering their product, they may owe you damages from the date of publication forward.

Legal Significance of Patent Pending Status

The strategic value of patent pending status is often misunderstood. It is neither useless nor as powerful as an issued patent. Its legal significance lies in three areas:

Priority date: In the current first-inventor-to-file system, the date you filed your application determines priority over competitors. Two inventors racing to develop similar technology — not uncommon in fast-moving technical fields — will see their rights determined by filing date. Being first to file, even by days, can make the difference between owning a patent and being excluded from the market by someone else's patent.

Public disclosure: Non-provisional patent applications are published by the USPTO 18 months after their earliest filing date. Once published, the application becomes prior art that can be cited against later-filed applications by others. This publication also starts the clock on potential pre-issuance royalties under the retroactive damages provision described above.

Investor and licensing value: For startup companies and individual inventors, a pending patent application — particularly a well-drafted non-provisional — is a tangible IP asset that can be assigned, licensed, or used to demonstrate technology ownership to investors. Due diligence in investment and acquisition transactions routinely includes review of pending patent applications.

What "Patented" Means

"Patented" means a patent has been examined by a USPTO examiner, the claims have been allowed, the issue fee has been paid, and the USPTO has granted the patent with a unique U.S. Patent Number. An issued patent is a property right — legally, a personal property right under 35 U.S.C. § 261 — that gives the patent holder the right to exclude others from making, using, selling, offering to sell, or importing the patented invention in the United States for the duration of the patent term.

With an issued patent, the owner can:

• Sue infringers in federal court for patent infringement
• Seek injunctive relief to stop ongoing infringement
• Seek damages, including lost profits or reasonable royalties
• License the patent to others in exchange for royalties or other consideration
• Sell (assign) the patent as a business asset
• Use the patent number in marking products, packaging, and marketing materials

Once a patent issues, products covered by the patent should be marked with "Patent" or "Pat." followed by the patent number, or with a virtual marking statement directing the public to a webpage listing the applicable patent numbers. Proper marking is important for maximizing damages in infringement litigation.

Patent Marking Requirements and False Marking Penalties

Federal law (35 U.S.C. § 287) provides that if a patent holder fails to mark patented products with the patent number, they may be limited in the damages they can recover in an infringement lawsuit. Specifically, a patent holder who does not mark cannot recover damages for infringement that occurred before the infringer received actual notice of the patent. Proper marking provides constructive notice to the public, which preserves the full damages period.

False marking — labeling a product as "Patented" or "Patent Pending" when no patent has been issued and no application has been filed — is a federal offense under 35 U.S.C. § 292. The statute imposes penalties for false marking with intent to deceive the public. Any person may sue for false marking, with civil fines payable to the United States. Companies that continue to mark products with expired patent numbers with the intent to deceive can also face liability.

Common false marking violations include:

• Marking products with "Patent Pending" when no application has ever been filed
• Continuing to use "Patent Pending" after the application has been abandoned or the 12-month provisional window has expired without filing a non-provisional
• Marking products with an expired patent number with intent to deceive
• Marking products with a patent number that does not actually cover the product

Consulting with a patent attorney before using any patent-related marking on products or marketing materials is always advisable. Inadvertent false marking can create legal exposure that outweighs any marketing benefit.

From Patent Pending to Patented: The Path Forward

Bridging the gap from patent pending to patented requires navigating the USPTO examination process, which involves responding to office actions, making claim amendments as needed, and ultimately reaching allowance. Most utility patent applications receive at least one office action — a written communication from the examiner identifying rejections or objections — before being allowed.

The examination process is not passive. How claims are drafted and how office actions are responded to determines the ultimate scope of the patent. Broad claims that cover a wide range of competitive products provide the most protection. Narrow claims that are allowable but only cover your specific implementation provide limited protection. An experienced patent attorney manages this process strategically, fighting for the broadest defensible claims while keeping the application moving toward issuance.

Once allowed, the applicant pays an issue fee and the patent is granted. The transition from patent pending to patented is the point at which you gain enforceable rights — the ability to stop infringers, demand royalties, and build a defensible IP position. Explore our patent prosecution services to learn how we guide inventions from first disclosure through issued patent.