Patent Filing Fee Calculator

The Patent Filing Fee Calculator estimates the official government fees for filing a patent application at the three largest patent offices in the world — the USPTO (United States), the EPO (Europe), and CNIPA (China). It adds up the filing, search and examination fees, applies excess-claim and page surcharges, factors in small entity, micro entity and Chinese fee-reduction discounts, and then shows you how the same invention would compare in cost across all three offices.

What Patent Filing Fees Does This Calculator Cover?

This tool focuses on the official fees charged by each patent office at the filing and examination stage. These are the fees you pay directly to the government, separate from any attorney or patent-agent charges. The main components are:

• Filing fee — the basic fee to lodge the application.
• Search fee — the fee for the office to search prior art (USPTO and EPO charge this separately; in China the search is part of substantive examination).
• Examination fee — the fee to have an examiner review the application against patentability requirements.
• Excess-claim fees — surcharges when an application has more claims than the free allowance.
• Page fees — surcharges for longer specifications.

How Patent Fees Differ Across the USPTO, EPO and CNIPA

Each office uses its own currency, its own fee components, and its own discount system. That is what makes cross-border filing budgeting confusing — and why a single comparison view is so useful.

USPTO (United States) — Utility Patent

The combined filing, search and examination fees for a large entity total about $2,000. Small and micro entities pay 60% and 80% less on essentially every fee.

EPO (Europe) — European Patent Application

Note the key difference: the EPO's 30% reduction applies only to the filing and examination fees, not to the large search fee. That is why an EPO application is typically the most expensive of the three at the official-fee level.

CNIPA (China) — Invention Patent

China's official fees are by far the lowest, and the fee-reduction programme can cut the filing and examination fees by up to 85% for qualifying domestic applicants. Foreign applicants generally cannot claim this reduction.

Entity Size and Fee Reductions Explained

What This Calculator Does NOT Include

The official filing fees are only one part of the true cost of obtaining a patent. Budget separately for:

• Attorney / patent-agent fees — drafting and prosecuting an application is usually the largest cost, often several thousand dollars or more.
• Drawings and translations — required formal drawings, and translations for the EPO and CNIPA.
• Grant / issue fees — paid once the application is allowed.
• Renewal / maintenance fees — recurring fees that keep a granted patent in force, paid for up to 20 years and rising steeply over time.
• PCT international phase fees — if you file an international PCT application before entering national phases.

How to Use This Calculator

1. Choose a patent office: Select USPTO, EPO or CNIPA. The form switches to that office's fee schedule, currency and discount options automatically.
2. Select your applicant status: Pick your entity size or fee-reduction status to apply the correct discount.
3. Enter claims and pages: Enter the total number of claims, the independent claims (USPTO), and the page count so surcharges are calculated.
4. Choose which fees to include: Tick the search and examination fees if you are paying them at this stage.
5. Review the results: See the total official fee, an itemized breakdown, the animated cost chart, how much your discount saves you, and a comparison across all three offices.

Frequently Asked Questions

What patent fees does this calculator include?

It estimates the official government fees charged by the patent office: the filing fee, the search fee, the examination fee, and surcharges for excess claims and extra pages. It does not include attorney or patent-agent fees, drawings, translations, or later renewal and maintenance fees.

How much does it cost to file a patent at the USPTO?

For a standard utility application the USPTO basic filing, search and examination fees total about $2,000 for a large entity. Small entities pay 60% less and micro entities pay 80% less, so the same fees cost roughly $800 for a small entity and $400 for a micro entity, before any excess-claim fees.

What is a small entity and a micro entity at the USPTO?

A small entity is generally a business with fewer than 500 employees, an independent inventor, or a non-profit. A micro entity must also meet a gross-income limit and have filed no more than four prior applications. Small entities receive a 60% fee discount and micro entities receive an 80% discount on most USPTO fees.

Are EPO and CNIPA fees discounted too?

Yes, but differently. The EPO gives a 30% reduction on the filing and examination fees for qualifying individuals, SMEs, non-profits and universities. CNIPA reduces the filing and substantive-examination fees by 85% for a single qualifying applicant or 70% for two or more, although foreign applicants generally cannot claim the Chinese reduction.

Why are the fees shown in different currencies?

Each patent office charges in its own currency: the USPTO in US dollars, the EPO in euros, and CNIPA in Chinese yuan. The comparison chart converts each total to an approximate US dollar amount so you can compare the offices, but the actual fee you pay is in the office's own currency.

Are these the total costs of getting a patent?

No. These are only the official filing-stage fees. The full cost of obtaining and keeping a patent also includes professional attorney or agent fees, drawings and translations, grant or issue fees, and recurring renewal or maintenance fees that are paid for many years. Total real-world costs are usually several times the official filing fees.

Additional Resources

• USPTO Fee Schedule
• Patent - Wikipedia