Provisional vs non-provisional
Provisional vs. non-provisional: which to file first?
ProvisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → applications buy you 12 months of priority for under $5,000. Non-provisionals are the real patent — they get examined, last 20 years, and cost five times more. Most successful inventors file both, in that order.
The short answer
File a provisional first if you can afford it. It locks in your priority date for 12 months at under 10% of a non-provisional's cost. Use that year to refine the invention, pitch investors, gauge market interest, and decide if it's worth the bigger commitment.
Side by side
The eight differences
| Provisional | Non-provisional | |
|---|---|---|
| Becomes a patent? | No, never. It must be converted within 12 months. | Yes, if allowed by the examinerexaminerThe USPTO official who reviews a patent application and decides whether to grant it.Read more →. |
| Filing cost (small entity) | $130 USPTO fee + ~$2K–$5K attorney draft. | $830 USPTO fee + $6K–$15K attorney draft. |
| Claims required? | No — narrative description is enough. | Yes — at least one numbered claimclaimA numbered sentence at the end of a patent that legally defines what the inventor owns. The most important section.Read more →, usually 20+. |
| Examined? | No examination. No office actions. | Examined under §101, §102, §103, §112. |
| Duration | 12 months from filing. Then it expires unless converted. | Up to 20 years from filing (utility) once granted. |
| "Patent pending" status? | Yes, immediately on filing. | Yes, immediately on filing. |
| Establishes priority date? | Yes — for everything fully disclosed in the application. | Yes — and the priority can chain back to a provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → if filed within 12 months. |
| Best for | Locking in a date while raising capital, refining, or testing the market. | Committing to obtain a real patent. |
The 12-month dance
What to do in the year between
- 01
Month 0 — file the provisional.
Submit a detailed technical description and at least one informal drawing. Quality matters here — anything not disclosed cannot get the provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more →'s priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more → in the non-provisional.
- 02
Months 1-6 — refine the invention.
Build, test, iterate. Document any new aspects or improvements. If you discover the original disclosure was incomplete, file a second provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → for the new material.
- 03
Months 4-9 — gauge commercial viability.
Pitch investors, talk to potential customers, do a market study. The "patent pending" status now signals seriousness without committing to the $15K non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more →.
- 04
Month 10 — decide.
Three paths: convert to non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more →, abandon and lose the priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more →, or pivot. Most patents that ever get granted started here with a decision to convert.
- 05
Month 11 — finalize the non-provisional.
Hire a patent attorney now. The non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → must include claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more →, formal drawings, and a complete specificationspecificationThe main body of the patent — describes the invention in detail. Used to interpret the claims.Read more →. Filing in the last week is risky.
- 06
Month 12 — non-provisional must be filed.
Hard deadline. After this, you forfeit the provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more →'s priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more →. International (PCT) filings have the same 12-month window.
Where it goes wrong
Six mistakes that waste a provisional
A provisional is cheap and forgiving in form, which is exactly why it is easy to get wrong in substance. Each of these quietly destroys the protection people assume they have.
Filing a thin provisional.
A provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → only secures a priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more → for what it actually describes and enables. A one-page sketch or a pitch deck buys you a filing datefiling dateThe day the patent application was submitted to the USPTO. Sets the priority date for prior-art comparisons.Read more → but little real protection: if your non-provisional later claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more → something the provisional never disclosed, that claimclaimA numbered sentence at the end of a patent that legally defines what the inventor owns. The most important section.Read more → gets the later date — and any prior artprior artEarlier patents, publications, or products that existed before this patent's filing date. Patent claims must be novel over the prior art.Read more → in between can sink it. Describe the invention as completely as a full specificationspecificationThe main body of the patent — describes the invention in detail. Used to interpret the claims.Read more → would.
Treating the 12-month deadline as flexible.
The window to file the non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → (or a PCT application) claiming a provisional's benefit is 12 months, set by statute (35 U.S.C. §119(e)) and not extendable. Miss it and the provisional's priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more → is gone permanently — you cannot revive it.
Forgetting your own disclosures start their own clock.
Filing a provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → does not pause the one-year bar under §102. If you publicly disclosed, offered for sale, or sold the invention before filing, a separate deadline may already be running. And most countries have absolute noveltynoveltyThe requirement that an invention be different from anything publicly known before its priority date.Read more → — no grace period — so a public disclosure before filing can bar foreign rights entirely, even if the provisional preserves your US date.
Adding “new matter” later and assuming it relates back.
Anything in the non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → that was not disclosed in the provisional is new matter and only gets the later filing datefiling dateThe day the patent application was submitted to the USPTO. Sets the priority date for prior-art comparisons.Read more →. If you keep improving the invention during the year, file a second provisional for the new material rather than assuming the original date covers it.
Assuming “patent pending” means protection.
“Patent pending” warns others that a filing exists, but it confers no enforceable rights. You cannot sue anyone for infringementinfringementMaking, using, selling, or importing a patented invention without permission from the patent holder.Read more → on a pending application — enforceable rights begin only if and when a patent actually grants.
DIY-drafting the non-provisional like a provisional.
A provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → can be a narrative; the non-provisional cannot. It needs at least one properly drafted claimclaimA numbered sentence at the end of a patent that legally defines what the inventor owns. The most important section.Read more → (usually many), formal drawings, and a specificationspecificationThe main body of the patent — describes the invention in detail. Used to interpret the claims.Read more → that satisfies §112's written-description, enablementenablement112 requirement: the patent must teach a skilled person to make and use the invention without undue experimentation. Broad claims can fail enablement.Read more →, and definiteness requirements. This is where most self-filers lose protection they thought they had.
The other direction
When to skip the provisional entirely
“Provisional first” is the right default, not a rule. In three situations, filing the non-provisional directly is the smarter move.
The invention is finished and you are committed.
If the design is locked and you are certain you want a patent, filing the non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → directly starts examination roughly 12 months sooner — useful when speed to grant matters.
You need an enforceable patent fast.
A provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → adds a year before examination even begins. If a known competitor is already copying you, that delay can be costly — going straight to a non-provisional (or paying for prioritized examination) gets you to a grantable position quicker.
Your budget only covers a thin provisional.
A poorly disclosed provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → can be worse than none — it can create false security and lock in a weak record. Sometimes the better move is to wait until you can file one complete application rather than a placeholder that protects almost nothing.
Common questions
Provisional vs non-provisional — FAQ
Can I extend a provisional past 12 months?
No. The 12-month period is statutory (35 U.S.C. §119(e)) and cannot be extended. You must file a non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → or a PCT application claiming the provisional's benefit within 12 months, or its priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more → is lost. You can always file a brand-new provisional, but it receives a new, later filing datefiling dateThe day the patent application was submitted to the USPTO. Sets the priority date for prior-art comparisons.Read more →.
Does a provisional patent application get examined?
No. The USPTO does not examine provisionals, issue office actions on them, or grant patents from them. A provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → simply holds your filing datefiling dateThe day the patent application was submitted to the USPTO. Sets the priority date for prior-art comparisons.Read more → for 12 months. Examination happens only on the non-provisional that claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more → its benefit.
Do I need claims in a provisional?
No — a provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → does not require formal claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more →. But it must fully describe and enable the invention, because the priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more → only protects what is actually disclosed. Many practitioners include at least one claimclaimA numbered sentence at the end of a patent that legally defines what the inventor owns. The most important section.Read more → anyway, because drafting a claim forces the disclosure to be complete.
Can I file more than one provisional for the same invention?
Yes. Inventors often file several provisionals over a development year as the invention evolves, then file one non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → within 12 months of the earliest provisional, claiming the benefit of each. Remember that every provisional only protects what it individually discloses.
Does “patent pending” from a provisional give me legal protection?
It lets you mark a product “patent pending,” which signals that a filing exists and can deter copying, but it grants no right to sue. Enforceable rights begin only if and when a patent issues — and only a non-provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → can mature into an issued patent.
Is a provisional cheaper because it is lower quality?
No. It is cheaper because there is no examination and no formal claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more → or drawings are required — not because the disclosure should be sloppy. A well-drafted provisionalprovisionalA simplified, lower-cost patent application that locks in a filing date for 12 months while the inventor refines or pitches.Read more → still takes real attorney time, precisely because the description must be complete enough to be worth its priority datepriority dateThe earliest date used to compare the patent against prior art. Usually equals the filing date.Read more →.
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