Provisional vs Nonprovisional Patent
The short answer: a provisional patent application is a cheap, informal placeholder that locks in a filing date for 12 months but never turns into a patent on its own. A nonprovisional application is the real, examined application that can actually result in an issued patent. If you want protection that eventually becomes enforceable, you need a nonprovisional application at some point. The provisional is a head start, not a substitute.
That distinction trips up a lot of first-time inventors, so here’s what each filing actually does, what they cost, and how to decide which one fits your situation.
What a Provisional Patent Application Actually Is
A provisional application is filed under 35 U.S.C. §111(b). It requires a written description of the invention and drawings if drawings are needed to understand it, but it skips the parts that make patent applications slow and expensive: no formal claims, no inventor’s oath or declaration, and no information disclosure statement listing prior art.
Because the United States Patent and Trademark Office (USPTO) does not examine a provisional application, there is no waiting for an office action and no chance of it being rejected on the merits. Filing one simply gets you an official filing date and lets you legally put “patent pending” on your product. That filing date matters a great deal if a competitor files something similar a few months later, since US patent law generally favors the earlier filer.
The catch is the 12-month clock. A provisional application automatically goes abandoned exactly one year after filing, with no extensions available. If you don’t file a nonprovisional application claiming benefit of that provisional before the deadline, the priority date is gone for good.
What a Nonprovisional Patent Application Actually Is
A nonprovisional application, filed under 35 U.S.C. §111(a), is the application that actually gets examined. It needs a complete specification, at least one formal claim defining the scope of the invention, drawings where applicable, and an inventor’s oath or declaration. Once filed, it enters the examination queue, where a USPTO examiner compares it against prior art and issues office actions raising objections or rejections that the applicant has to respond to.
This process can take one to three years, sometimes longer, depending on the technology area and how many rounds of back-and-forth are needed. If the application is allowed, paying the issue fee results in a granted, enforceable patent. Only a nonprovisional application can become an actual patent.
Provisional vs Nonprovisional Patent: Side-by-Side Comparison
| Feature | Provisional Application | Nonprovisional Application |
|---|---|---|
| Legal basis | 35 U.S.C. §111(b) | 35 U.S.C. §111(a) |
| Examined by USPTO | No | Yes |
| Formal claims required | No | Yes |
| Inventor’s oath or declaration | Not required | Required |
| Can become an issued patent | No, on its own | Yes, if allowed |
| Pendency | 12 months, cannot be extended | Typically 1 to 3+ years until allowance or abandonment |
| USPTO filing fee (large entity) | $325 | Filing, search, and examination fees together run about $2,000 |
| USPTO filing fee (small entity) | $130 | About $800 combined |
| “Patent pending” status | Yes | Yes |
Fee amounts are from the USPTO’s current fee schedule and do not include attorney or agent costs, which usually make up the larger share of the total expense for either filing.
Why Inventors File a Provisional First
Most solo inventors and startups file a provisional application before a nonprovisional one, and there are good practical reasons for that.
- It’s cheaper and faster to prepare since there are no formal claims to draft.
- It locks in an early filing date while you keep refining the invention.
- It buys 12 months to test the market, look for licensing interest, or raise funding before spending more on the nonprovisional.
- It lets you say “patent pending” on packaging, websites, or investor decks right away.
- You can file additional provisional applications during the year and roll them all into one nonprovisional application later, as long as everything is filed within 12 months of the earliest one you want to claim benefit from.
The tradeoff is quality. A provisional only protects what it discloses in enough detail for someone skilled in the field to recreate it. A thin, rushed provisional filed just to grab a date can leave gaps that hurt you later, especially if the nonprovisional ends up covering features the provisional never described.
What Happens If You Miss the 12-Month Deadline
If the nonprovisional application isn’t filed within 12 months of the provisional’s filing date, the provisional lapses and that priority date can no longer be claimed. There is a narrow path to restore the benefit under certain unintentional-delay rules, but it involves a petition and an added fee, and it isn’t guaranteed. In practice, most inventors treat the 12-month mark as a hard deadline and calendar it well in advance.
Which One Should You File First
If your invention is still evolving, or you need time to find funding, test a prototype, or gauge market interest, filing a provisional first is usually the more sensible route. If the invention is already fully developed, you have the budget ready, and you want to move straight into examination, going directly to a nonprovisional application can save a step and, in some cases, add a small amount of patent term compared with claiming benefit from a provisional filed earlier.
This article provides general information about US patent filings and is not legal advice. Patent strategy depends heavily on the specific invention, industry, and business goals, so speak with a registered patent attorney or agent before deciding how to file.
Frequently Asked Questions
Does a provisional patent application give me any patent rights?
Not by itself. It establishes a filing date and lets you use “patent pending,” but it never gets examined and can never become an issued patent unless you file a nonprovisional application within 12 months.
Can I file a nonprovisional application without ever filing a provisional one?
Yes. Filing a nonprovisional application directly is common when the invention is finished and the applicant wants to start examination right away instead of waiting out a 12-month provisional period.
How much does it cost to convert a provisional into a nonprovisional application?
There’s technically no “conversion.” You file a new nonprovisional application that claims the benefit of the provisional’s filing date, and it requires its own basic filing, search, and examination fees, which together run roughly $2,000 for a large entity before any attorney costs.
What happens to my provisional application after 12 months?
It automatically becomes abandoned. It stays on file at the USPTO but cannot be revived to claim benefit from after the deadline, except in limited circumstances involving a petition and additional fee.
Is a provisional patent application public?
No, not on its own. A provisional application is never published by the USPTO unless it’s incorporated into a later nonprovisional application that itself gets published or issues as a patent.
Choosing between the two filing types usually comes down to timing and budget rather than one being objectively better. A provisional buys breathing room at a low cost, while a nonprovisional is the only path that actually leads to an enforceable patent. Many inventors use both, in sequence, to get the best of each.