Provisional Patent
Yes, you can sell an invention while you hold a provisional patent application. There is no law that stops you from marketing, manufacturing, or shipping a product once you’ve filed with the U.S. Patent and Trademark Office. What a provisional application gives you is a filing date and the right to use the phrase “patent pending” on your product and packaging. It does not give you an actual patent, and it does not stop someone else from copying your idea while you wait to file a full application.
That gap between “you can sell it” and “you’re fully protected” is where most inventors get confused. Here’s what actually happens when you try to bring a provisional-patent invention to market.
What a Provisional Application Actually Covers
A provisional patent application is not a patent. It’s a placeholder filed under 35 U.S.C. §111(b) that locks in an early filing date without requiring formal claims, an oath, or a prior art search. The USPTO never examines it. Instead, it sits on file for 12 months while you decide whether to move forward with a non-provisional utility application.
During that window, you’re allowed to label your invention “patent pending.” That label alone does not grant enforceable rights. It simply tells the public that a filing exists and that a real patent could eventually be granted with your original filing date attached.
So Why Is Selling Allowed?
Because the law treats a provisional filing as a form of protection against losing your priority date, not as a restriction on commercial activity. Once you’ve filed, you’re free to:
- Sell the product directly to customers
- List it on a marketplace or crowdfunding site
- Pitch it to retailers or distributors
- Talk to manufacturers about production
- Approach investors for funding
Many inventors use the 12-month provisional period specifically to test demand before spending money on a full patent application. If the product sells well, that’s often the signal to move forward with the non-provisional filing.
Why “Patent Pending” Still Matters for Sales
Buyers and retailers tend to view “patent pending” as a sign of legitimacy. It can also discourage casual copying, since competitors know a patent could eventually issue and cover your design. It won’t stop a determined competitor, but it does add a layer of caution that pure secrecy doesn’t provide.
The Risks Worth Knowing Before You Sell
Selling early comes with trade-offs that are easy to overlook when you’re excited to launch.
- No enforceable rights yet. Until a non-provisional application is filed and a patent is granted, you cannot sue anyone for infringement.
- The 12-month clock doesn’t pause. If you miss the deadline to file your non-provisional application, you lose the benefit of your original filing date entirely.
- Foreign rights can disappear fast. Most countries outside the U.S. follow an absolute novelty rule, so public sale or disclosure before filing can permanently block patent rights abroad.
- Competitors can see your product. Selling publicly means your design is visible to anyone, including companies that could design around your provisional filing.
Provisional vs. Non-Provisional: What Changes When You Sell
| Feature | Provisional Application | Non-Provisional (Utility) Patent |
|---|---|---|
| Examined by USPTO | No | Yes |
| Can use “patent pending” | Yes | Yes |
| Enforceable against infringers | No | Yes, once granted |
| Legal to sell the invention | Yes | Yes |
| Expiration if not converted | 12 months | Up to 20 years from filing |
| Formal claims required | No | Yes |
How to Sell Safely While You Wait to File the Full Patent
A few practical habits can save you from losing rights or leverage during the provisional period.
- File the provisional before you sell anything publicly. This locks in your earliest possible date, which matters most if you ever want protection outside the U.S.
- Keep dated records. Save invoices, sales pages, and shipping confirmations. If a dispute ever comes up, timestamps matter.
- Use non-disclosure agreements with manufacturers or partners. A provisional filing protects your filing date, not your trade secrets in every conversation you have.
- Mark your product “patent pending.” It’s a simple deterrent and a common courtesy that also meets USPTO guidance on the term.
- Set a reminder well before the 12-month deadline. Filing the non-provisional application even a day late means starting over.
What Happens If You Sell Before Filing Anything
U.S. patent law gives inventors a one-year grace period after their own public sale or disclosure to file a patent application, under the framework described in 35 U.S.C. §102. That grace period exists, but it’s a safety net, not a strategy. Most patent professionals recommend filing the provisional application first and selling second, mainly because that one-year grace period does not exist in most other countries. A sale or public demo overseas before filing can wipe out your ability to patent the invention there permanently.
This article provides general information about provisional patents and is not legal advice. Patent strategy depends heavily on your specific invention, your target markets, and your business goals, so it’s worth speaking with a registered patent attorney or agent before making filing decisions.
Frequently Asked Questions
Can I sell my invention without filing any patent application at all?
Yes, but you take on more risk. Without a filing, you have no priority date to fall back on, and in the U.S. you’re relying entirely on the one-year grace period after your first public sale or disclosure to file later.
Does a provisional patent stop someone from copying my product?
Not directly. It doesn’t grant enforceable rights on its own. It only secures a filing date that could later support an enforceable patent once a non-provisional application is examined and granted.
Can I license my invention to a company while my provisional application is pending?
Yes, licensing is common during this period. Many inventors use the provisional filing as leverage in licensing talks, since it shows a formal claim to the invention already exists on file.
What happens if I don’t file a non-provisional application within 12 months?
Your provisional application expires and cannot be revived or extended. You lose the benefit of that original filing date, though you could still file a new provisional or non-provisional application later if your invention hasn’t lost its novelty.
Is it better to file a provisional patent before or after I start selling?
Filing first is generally the safer order. It secures your filing date before any public sale, which matters most if you plan to seek patent protection in other countries later.