A US utility patent typically costs between roughly $5,000 and $20,000 from filing to grant when prepared by a patent attorney, with simple mechanical inventions at the low end and software or complex electronics at the high end. A do-it-yourself filing can squeeze government fees down to a few hundred dollars, and a provisional application professionally drafted usually runs in the low thousands. The wide range exists because the total is really four separate bills: government fees, professional drafting, prosecution (arguing with the examiner), and maintenance. This is an educational breakdown — Projects House is an engineering firm, not a law firm — but here is where the money actually goes.

The four cost layers of a US patent

1. USPTO government fees

The Patent Office charges for filing, search, and examination, then an issue fee at grant. For most independent inventors these fees total in the hundreds of dollars, because the USPTO discounts small entities and gives micro entities — most individual inventors — an even deeper discount. Government fees are the smallest layer of the bill and are published on the USPTO fee schedule; they change periodically, so always check the current numbers.

2. Professional drafting

This is the big line item. Attorney or agent fees to draft a non-provisional utility application generally run from several thousand dollars for a simple mechanical device to well over ten thousand for complex electronics, software-driven systems, or biotech. A provisional application costs far less to prepare — typically the low thousands with professional help — because it has no claims and fewer formalities. Whether you need an attorney or the lower-cost patent agent for this work is covered in patent attorney vs. patent agent.

3. Prosecution — the cost nobody budgets for

Almost every application receives at least one office action, and each professional response typically costs from several hundred to a few thousand dollars. Two or three rounds are normal. This is why quotes for "filing a patent" understate the true cost of "getting a patent" — expect prosecution to add a meaningful fraction of the original drafting fee to your total.

4. Maintenance fees

After grant, US utility patents require maintenance fees at three intervals across the patent's life to stay in force, growing progressively larger — from hundreds into thousands of dollars at full rate, again discounted for small and micro entities. Design patents, by contrast, need no maintenance fees at all.

Cheaper paths and what they trade away

  • DIY filing: a few hundred dollars in fees, but self-drafted claims are the most common reason patents end up too narrow to matter. Risky for anything commercially valuable.
  • Provisional first: secures "patent pending" for a year at low cost while you validate the market — a sensible sequence for most first-time inventors, explained step by step in how to patent an idea.
  • Design patent: protects appearance rather than function and costs a fraction of a utility patent — total costs commonly land in the low thousands with professional help.
  • Thorough search before drafting: a patent search costing a few hundred dollars (or free with the free patent search tools) can save you the entire drafting fee if it finds blocking prior art early.

Is a patent worth the money?

A patent is worth it when the invention has real commercial potential and the patent supports a business plan — licensing negotiations, investor confidence, or defending a market position. It is rarely worth it as a trophy. Many successful products launch on a provisional plus speed to market, converting to a full utility filing once revenue or licensing interest justifies the spend. Budget the patent as one line in the full development plan — alongside the cost to develop the product itself — and the decision usually makes itself.

Build the thing worth patenting

The patent protects the invention; engineering makes it real. Projects House develops inventions into working, manufacturable products — and solid engineering documentation and prototypes make your attorney's drafting job easier and your application stronger, as part of the road from idea to product. Tell us what you are inventing through the contact form — the consultation is free and confidential.