How to File a Provisional Patent Application: Fees and Filing Steps

To file a provisional patent application with the United States Patent and Trademark Office (USPTO), you need three things: a written description detailed enough that someone skilled in the field could build your invention, a cover sheet identifying the filing as provisional, and the filing fee, which starts at $65 for micro entities. You submit the package through the USPTO’s online portal, Patent Center, and from that moment you have 12 months to file a full nonprovisional application if you want to keep the early filing date.

What Filing a Provisional Actually Gets You

The U.S. patent system awards patents to the first person to file, not the first to invent. A provisional application stakes your place in that line by establishing an early effective filing date that carries forward when you later file a nonprovisional application.¹ Once it’s filed, you can legally mark your invention “patent pending.” That label has no enforcement power on its own, but it often discourages copycats from investing in a knockoff.²

The USPTO never examines a provisional. It sits on file for 12 months and holds your date while you refine the invention, test the market, or line up funding.³

One boundary to know before you start: provisional applications are only available for utility inventions, meaning processes, machines, manufactured articles, and compositions of matter. You cannot file a provisional for a design invention.¹

Write the Description That Will Actually Protect You

This is where most inventors sabotage themselves. The USPTO requires a description detailed enough that someone with ordinary skill in the relevant field could build and use your invention without excessive trial and error.⁴ Your future nonprovisional can only claim priority for subject matter you actually disclosed in the provisional. Leave out a key feature, or describe it vaguely, and that feature loses your early filing date. A competitor who files on it in the meantime can block you.

Cover everything that makes the invention work: what it does, how each component functions, how the components interact, what materials or methods are involved, and any variations you’ve developed. Write it as instructions for a skilled colleague who has to reproduce the invention from scratch. Specificity now is what makes the priority date worth anything later.

Formal patent claims are not required in a provisional.⁴ Drafting rough claims anyway can help you focus the description on what you actually want to protect. An abstract is optional. Skip prior art statements and information disclosure entirely, since the application is not being examined.¹

Add Drawings When They Help Explain the Invention

Drawings are not strictly required to receive a filing date, but skipping them is risky. If a drawing is necessary to understand your invention and you don’t include one, you may be unable to get a patent for the claimed invention later.⁵ Provisional drawings can be informal. Hand sketches, computer diagrams, photographs, and flowcharts all work. They don’t have to meet the strict formatting rules that apply to a nonprovisional.

Fill Out the Cover Sheet

Every provisional needs a cover sheet identifying it as a provisional application. The USPTO provides Form PTO/SB/16 for this.⁶ The sheet has to include:

Full name and city/state (or country) of residence for every inventor. All inventors must be named.
A descriptive title of the invention, limited to 500 characters.
A correspondence address, either a USPTO customer number or a full mailing address with phone and email.
Attorney or agent name and registration number, if you’re using one.
If the invention was developed under a government contract, the agency and contract number.

You do not need to file an inventor’s oath or declaration with a provisional.¹ That gets saved for the nonprovisional.

Pick Your Entity Status and Pay the Fee

The filing fee depends on which of three tiers you qualify for.

Large entity pays $325. This is the default if you don’t fit a reduced category.
Small entity pays $130. You qualify if you’re an independent inventor who hasn’t licensed rights to a large company, a business with no more than 500 employees, or a nonprofit, including universities.⁷
Micro entity pays $65. You must first qualify as a small entity, and additionally: you haven’t been named as inventor on more than four previous nonprovisional applications, your gross income the prior calendar year didn’t exceed $251,190, and you haven’t assigned rights to anyone whose income exceeded that threshold. Employees of institutions of higher education may qualify regardless of income.⁸⁹

The micro entity income threshold moves each year because it’s tied to three times the median household income. The current $251,190 limit applies to fees paid from September 2025 forward.⁹

If your specification and drawings run past 100 sheets, an application size fee kicks in: $450 (or $180 small entity, $90 micro entity) for each additional 50 sheets or fraction of 50.⁶ Most provisionals stay well under that.

Submit Through Patent Center

Patent Center is the USPTO’s online filing portal and fully replaced the older EFS-Web system in November 2023.¹⁰ It handles submission, fee payment, and application management in one interface. There’s a training mode where you can practice filing without actually submitting anything, and if you’ve never filed before, use it first.¹¹

Filing by mail is still an option. Unlike nonprovisional applications, provisionals don’t carry a non-electronic filing surcharge for paper submissions.¹²

After the USPTO processes your submission, you’ll receive a filing receipt confirming your application number and filing date.¹³ Save it. That application number is what you’ll reference when you file the nonprovisional claiming benefit of the provisional.

The 12-Month Clock Starts Immediately

A provisional lasts exactly 12 months from its filing date, and the deadline cannot be extended.¹ Nothing happens on the USPTO’s end during that window. Your job is to prepare and file a nonprovisional application that claims the benefit of the provisional’s filing date before the 12 months run out.

Let the deadline lapse and the provisional is abandoned. The filing date benefit is gone.¹ There is a narrow safety net: if the miss was unintentional, you can petition to restore the benefit within two months of expiration, with a fee and a statement of unintentional delay.¹⁴ Don’t plan around it.

File the Nonprovisional the Right Way

The nonprovisional is the application the USPTO actually examines. It needs everything the provisional didn’t: formal claims, an inventor’s oath or declaration, and search and examination fees on top of the filing fee.¹⁵

Two paths link a provisional to a nonprovisional, and choosing wrong can cost you close to a year of patent life.

The path almost every inventor should take is claiming benefit under 35 U.S.C. 119(e). You file a brand-new nonprovisional and reference the provisional’s application number. Your 20-year patent term runs from the nonprovisional filing date, so the provisional gives you up to a year of extra protection at the front end without shortening the back end.¹⁶

The other path is converting the provisional into a nonprovisional under 37 CFR 1.53(c)(3). Conversion keeps the provisional’s filing date as the nonprovisional’s filing date, which means the 20-year term starts running from the earlier date and you lose up to 12 months of patent life. Conversion also won’t refund the provisional filing fee or apply it toward nonprovisional fees.¹⁷ Rare circumstances justify conversion. For most inventors, claiming benefit is the answer.

Mistakes That Quietly Kill a Provisional

A Thin Description

The most damaging mistake is filing a vague, high-level description and assuming it covers everything you’ll want to claim later. Your provisional only protects subject matter you actually described. If the description gestures at a general concept but skips structural details, operating parameters, or alternative embodiments, those gaps don’t get your early filing date. Competitors who file on the specifics during your 12 months can end up with rights you thought were yours.

Treating “Patent Pending” as Enforceable

The label impresses investors and discourages competitors, but it confers zero enforceable rights. You cannot sue anyone for infringement based on a provisional. Until a patent actually issues from the nonprovisional, no one is legally barred from making or selling your invention.

False Marking

Marking a product “patent pending” when you have no application on file is a federal offense. The penalty is a fine of up to $500 per violation, and only the United States can bring that action. Separately, a competitor who suffers a competitive injury from false marking can sue for damages.¹⁸ Once your provisional expires or is abandoned, continuing to use the label counts as false marking.

Public Disclosure Before Filing

Under the America Invents Act, your own public disclosure of the invention (a demo at a trade show, a published article, a product launch) doesn’t automatically bar you from getting a patent, as long as you file within one year of that disclosure.¹⁹ The grace period only protects against your own disclosures and disclosures derived from yours. If someone independently publishes the same idea before you file, that becomes prior art against you. File the provisional before going public.

1
United States Patent and Trademark Office. Provisional Application for Patent
2
United States Patent and Trademark Office. Managing a Patent – Section: Patent Marking and Patent Pending
3
United States Patent and Trademark Office. Basics of a Provisional Application
4
United States Patent and Trademark Office. Manual of Patent Examining Procedure – 601 Content of Provisional and Nonprovisional Applications
5
BitLaw. MPEP 608.02 – Drawing – Section: Filing Date in the Absence of Drawing
6
United States Patent and Trademark Office. Provisional Application for Patent Cover Sheet – Form PTO/SB/16
7
eCFR. 37 CFR 1.27 – Definition of Small Entities
8
Office of the Law Revision Counsel. 35 USC 123 – Micro Entity Defined
9
United States Patent and Trademark Office. Micro Entity Status
10
United States Patent and Trademark Office. EFS-Web and Private PAIR to Be Retired
11
United States Patent and Trademark Office. File Online
12
United States Patent and Trademark Office. USPTO Fee Schedule
13
United States Patent and Trademark Office. Manual of Patent Examining Procedure – Application Number and Filing Receipt
14
eCFR. 37 CFR 1.78 – Claiming Benefit of Earlier Filing Date
15
United States Patent and Trademark Office. Nonprovisional (Utility) Patent Application Filing Guide
16
United States Patent and Trademark Office. Manual of Patent Examining Procedure – 2701 Patent Term
17
eCFR. 37 CFR 1.53 – Application Number, Filing Date, and Completion of Application
18
Office of the Law Revision Counsel. 35 USC 292 – False Marking
19
Office of the Law Revision Counsel. 35 USC 102 – Conditions for Patentability; Novelty