We surveyed patent attorneys across all 50 states in early 2026 and asked a direct question: how much do you charge for a provisional patent application?
The average: $4,035.
Most inventors will pay between $2,500 and $5,000. The price depends on invention complexity, your attorney’s fee structure, and sometimes even how much of the writing you do yourself.
Provisional Patent Costs by the Numbers
These numbers come from our nationwide research on patent attorneys, not published rate cards or estimates.
| Metric | Amount |
|---|---|
| Lowest quote received | $700 |
| Highest quote received | $10,000 |
| Average | $4,035 |
| Most common range | $2,500 - $5,000 |
Cost by Invention Type
Invention type is the biggest cost driver. Software patents cost more because of Section 101 eligibility hurdles at the USPTO. Biotech costs more because of the technical depth required in the specification.
| Invention Type | Typical Provisional Cost | Why |
|---|---|---|
| Mechanical / consumer product | $2,500 - $4,500 | Straightforward description and drawings |
| Electrical / hardware | $3,000 - $5,000 | More technical detail, circuit diagrams |
| Software / AI | $3,500 - $6,000 | Section 101 claim drafting adds complexity |
| Biotech / pharma | $4,000 - $8,000+ | Dense technical writing, extensive prior art |
| Combination (hardware + software) | $3,000 - $5,500 | Claims need to cover both sides |
Three Tiers of Provisional Applications
Not all provisionals are created equal. There are three fundamentally different tiers, and the one you pick affects both your upfront cost and your long-term patent position.
Cheap DIY Provisional ($200 - $500)
Online services advertise provisional applications starting around $200 plus the government filing fee. You fill out a form, upload your own description, and the service packages it behind a standard cover sheet. No attorney reviews the substance of what you wrote.
The filing receipt looks official. You can say “patent pending.” But a defective patent application cannot be fixed later. If your description is vague or incomplete, the claims in your eventual non-provisional will not be supported by the provisional. The filing date you thought you locked in may not hold up.
At this price, you are paying for a filing service, not patent work.
Disclosure Provisional ($500 - $1,500)
A disclosure provisional is the middle tier. You write your own technical description of the invention, and the attorney reviews it, does minimal editing, adds a cover sheet, formats it for USPTO requirements, and files it.
Some attorneys call this a “coversheet provisional.” The idea: get your description on file as fast and cheaply as possible while having a professional do a quality check. The attorney is not drafting from scratch. They are packaging and reviewing what you already wrote.
When this makes sense: You need patent pending status immediately. Maybe you have a demo day coming up, you are about to pitch investors, or you need to disclose your invention publicly at a trade show. The disclosure provisional locks in your filing date at a low cost. It also makes sense if you are a technical founder who can write a clear, detailed description of how the invention works.
The risk you are taking: Under 35 U.S.C. 112, every claim in your future non-provisional must be fully supported by the content in the provisional. If your self-written description is vague, incomplete, or missing key implementation details, your attorney will need to add new material when drafting the non-provisional. That new material will not get the benefit of your earlier provisional filing date. In practice, this means a competitor who files between your provisional date and your non-provisional date could use that gap against you.
A thin provisional protects what it describes. It does not protect what it leaves out.
Full Professional Provisional ($2,500 - $6,000)
This is the standard product. The attorney interviews you about your invention, writes the complete technical description from scratch, creates or directs the patent drawings, drafts informal claims to outline the scope of protection, and files everything with the USPTO.
The bulk of the attorney’s time goes into writing the Detailed Description section. This is the part that determines whether your future claims will be supported. A full professional provisional gives you a strong foundation for conversion to a non-provisional within the 12-month window. Because the attorney wrote it with the non-provisional in mind, the conversion process is smoother. Less new material needs to be added. The claims in the non-provisional are better supported by the provisional specification.
When this makes sense: Your product is in development, you have some runway, and you want a solid filing that will hold up when you convert. This is the right choice for most inventors.
The USPTO itself describes the provisional as a “lower cost” option compared to a non-provisional. It is lower cost, not cheap. The quality difference between the three tiers determines whether the filing actually does its job.
The Conversion Question
A provisional by itself does not become a patent. Within 12 months, you either convert it to a non-provisional application or it expires. That conversion is where the second big cost hits.
Non-provisional applications average $9,086 based on our nationwide research. See our full non-provisional patent cost guide for a detailed breakdown by invention type, office action costs, and total cost through grant. The total cost of patent protection through grant is the provisional fee plus the non-provisional fee plus any office action responses during examination.
Several attorneys in our research told us they credit the provisional fee against the non-provisional cost when you convert with them. If you paid $3,000 for the provisional and the non-provisional would normally be $8,000, you pay $5,000 at conversion. Others charge a flat conversion fee that is lower than their standard non-provisional rate.
This is worth asking about before you hire anyone. If you plan to convert (and you should, since that is the whole point of filing a provisional), a firm that credits the provisional fee against the conversion saves you real money over the life of the patent.
Writing the Provisional Yourself
Our research found that some attorneys accept client-written provisionals and charge a reduced fee to review, edit, format, and file. Prices for this service typically range from $500 to $1,500, roughly a third of what a full professional provisional costs.
If you are technical enough to write a clear, detailed description of your invention (how it works, how to build it, what makes it different from existing solutions), this is a legitimate way to cut costs. You are essentially doing the drafting work yourself and paying the attorney for their filing expertise and quality check.
The trade-off is the same as with a disclosure provisional: the quality of your description determines the strength of your filing. Gaps in your writeup become gaps in your patent protection. If you go this route, write as if you are explaining the invention to a skilled engineer who has never seen it before. Include every variation you can think of. More detail is always better in a provisional.
Should You Do a Patent Search First?
Some attorneys recommend a prior art search before filing a provisional. Others skip it. Based on our research across the country, patent searches typically cost $500 to $3,500.
A search before filing can save money in the long run. If it reveals that someone already patented your core concept, you save the $3,000+ you would have spent on the provisional. If the search comes back clean, you file with more confidence.
The counterargument: if you are filing a disclosure provisional on a tight timeline (say, before a public demo), the search adds time you might not have. In that case, file first, search later, and use the search results to inform how you draft the non-provisional.
USPTO Government Fees
On top of attorney fees, the USPTO charges a filing fee for provisional applications.
| Entity Size | Provisional Filing Fee |
|---|---|
| Micro entity (most individual inventors) | $80 |
| Small entity (companies under 500 employees) | $160 |
| Large entity | $320 |
Most solo inventors qualify for micro entity status if they have not been named on more than four previously filed patent applications and their gross income is below the threshold (roughly $229,000 in 2026).
These fees are small relative to the attorney cost. Even at the large entity rate, the government fee is under 10% of the average provisional cost.
Flat Fee vs. Hourly Billing
About 70% of the attorneys in our research use flat fees for provisional work. The rest bill hourly.
Hourly rates from our research ranged from $325/hr to $550/hr. At those rates, a provisional for a simple mechanical invention might take 10-15 hours, putting the total at $3,250-$8,250. For complex software or biotech, 15-25 hours pushes the cost to $4,875-$13,750.
Flat fees are better for inventors in almost every case. You know the total before work starts. No surprise bills. No anxiety about whether a quick phone call just cost you $100.
When an attorney quotes you hourly, ask for a flat-fee alternative. Most will offer one if asked.
Total Cost of Patent Protection
The provisional is just the first step. Here is what the full journey looks like:
| Stage | Typical Cost | When |
|---|---|---|
| Patent search (optional) | $500 - $3,500 | Before filing |
| Provisional patent application | $2,500 - $5,000 | Day one |
| Non-provisional conversion | $6,000 - $12,000 | Within 12 months |
| Office action responses (1-3 rounds) | $1,000 - $4,000 each | During examination |
| Issue fee | $300 - $1,200 | At grant |
| Maintenance fees | $400 - $7,400 | At 3.5, 7.5, 11.5 years |
Total cost from provisional filing through patent grant typically runs $10,000 to $25,000 for a utility patent, spread over 2-4 years. For a complete breakdown of the full lifecycle cost including maintenance fees and claims strategy, see our utility patent cost guide. If you are protecting a product’s appearance rather than its function, a design patent is a cheaper alternative at $1,500 to $3,000 total with no maintenance fees.
Bottom Line
A provisional patent application costs most inventors $2,500 to $5,000 when drafted by a professional. You can file a disclosure provisional for $500 to $1,500 if you write the description yourself and just need an attorney to format and file it.
Before hiring an attorney, ask these three questions:
- Do you credit the provisional fee toward the non-provisional if I convert with you? This can save thousands.
- Can I reduce the cost by writing the initial draft myself? Some attorneys will review and file your writeup for a fraction of the full drafting fee.
- What level of detail do you put into the provisional? A thorough provisional reduces your conversion cost later. A thin one does not.
The answers will tell you more about the total cost of getting a patent than the provisional price tag alone.