Patent Maintenance Fees: How to Pay, Check Status, and Avoid Expiry

What Patent Maintenance Fees Keep in Force

Patent maintenance fees keep an issued utility patent active after its grant date. You do not pay these fees during the patent application stage.

For most U.S. utility patents, payments fall due at three points. The dates are 3.5, 7.5, and 11.5 years after the patent grant.

The USPTO gives a six-month window around each due date. You may pay during that window without a late fee in many cases. The exact rules depend on the patent and the payment date.

Design patents do not need these fees. Plant patents do not need them either. Reissued utility patents may have different payment rules.

Payment point	When it falls due	Late payment window
First fee	3.5 years after grant	Six months after the due date
Second fee	7.5 years after grant	Six months after the due date
Third fee	11.5 years after grant	Six months after the due date

Fees change over time and vary by patent type and entity size. Small and micro entities often pay less than large entities.

Check the current fee table before sending money. A wrong amount can delay processing or cause a failed patent maintenance fee payment.

How to Make a Patent Maintenance Fee Payment

You can pay online through the USPTO Maintenance Fees Storefront. You can also mail a check or money order to the USPTO.

Online payment is often faster. It also gives you a receipt soon after the payment clears. The USPTO maintenance fee guidance lists current steps, fees, and mailing details.

Before you start, gather the patent number and the owner’s payment details. Confirm the entity status shown for the patent.

1. Open the USPTO maintenance fee payment site.
2. Enter the patent number without extra spaces or symbols.
3. Choose the fee that matches the current payment point.
4. Confirm the entity size and total amount due.
5. Pay by an accepted online method.
6. Save the receipt and payment confirmation number.

Mail payments need more care. Use the right form, check, and mailing address from the current USPTO instructions.

Send the payment early enough for delivery and processing. Keep a copy of every mailed item.

Patent maintenance fee payment services can handle these steps for a fee. Ask what the service covers before you hire one.

• Does the service track every patent deadline?
• Does it confirm payment acceptance?
• Does it charge a separate service fee?
• Does it protect your data and payment details?

How to Check Maintenance Fee Status

You can check maintenance fee status through the USPTO Maintenance Fees Storefront. Search by patent number to see due dates and payment records.

The record should show whether a fee was paid, pending, or not yet due. It may also show a late fee or a notice about expiration.

Older records may refer to PAIR, or Patent Application Information Retrieval. The USPTO now directs users toward Patent Center for many patent records.

Use the USPTO Patent Center when the record needs a wider file review. Look for notices, ownership changes, and payment entries.

Do not rely on a bank charge alone. A charge shows that money left your account. It does not prove that the USPTO accepted the payment.

• Search the patent number in the official fee store.
• Match the listed fee with your payment receipt.
• Check the recorded payment date.
• Review any notice about a surcharge or expiration.
• Save a copy of the current status page.

Check again after mailing a payment. Processing can take longer than online payment.

Ask the USPTO for help if the payment does not appear after a fair processing period.

What Happens When a Payment Is Late

A missed payment can lead to patent expiration. Once the patent expires, the owner may lose the right to stop others from using the invention.

The USPTO usually allows a six-month grace period after each due date. You can often restore the patent during this period by paying the fee and surcharge.

The surcharge depends on the patent and entity status. Check the current amount before making a late maintenance fee payment.

Missing the grace period creates a far greater risk. The patent may expire automatically, and later recovery may not be available.

Some owners may seek revival after an unintentional delay. That path has strict rules and may require a petition.

Do not assume that a late payment will restore rights at once. Confirm the record after payment and review any USPTO notice.

Situation	Likely action
Due date has not arrived	Pay the listed fee during the allowed payment window
Payment is within the grace period	Pay the fee plus the required surcharge
Grace period has ended	Review the record and seek legal advice quickly
Payment was rejected	Find the error and submit a corrected payment

Patent ownership may change while a fee is due. The current owner still needs a clear plan for payment and record keeping.

Act before the deadline. Late fixes cost more and may fail.

Ways to Manage Patent Fee Deadlines

Good records reduce the risk of an avoidable patent expiration. Start with a list of every issued utility patent.

Record each grant date, fee date, entity status, and payment result. Add the owner and any outside counsel linked to the patent.

Set more than one reminder for each deadline. Useful alerts may fall 12 months, six months, and 30 days before each date.

Review the list when ownership changes. A sale, merger, or name change can create gaps in responsibility.

• Keep patent numbers in one secure register.
• Store receipts with the matching patent record.
• Review entity status before each payment.
• Use a second person to check payment details.
• Check the USPTO record after each payment.
• Renew your reminder dates when rules or fees change.

Some patent maintenance fee payment services offer deadline tracking and payment support. They can help large portfolios, but they do not replace record checks.

Ask for a clear service agreement. It should state who tracks dates, who pays, and who handles failed payments.

For a small portfolio, a shared calendar and a simple register may be enough. The key is clear ownership of each task.

A Simple Review Before You Pay

Take five minutes to check the patent number and grant date. Then compare the fee date with the official USPTO record.

Confirm the entity size and the fee amount. This step matters because the wrong amount can cause delay.

Choose online payment when speed and a quick receipt matter. Choose mail only when you can track delivery and keep proof.

After payment, save the receipt and check the record again. Keep both items with the patent file.

If the fee is late, include the surcharge shown by the USPTO. If the grace period ended, speak with a patent attorney before acting.

These steps help protect the patent across its full life. They also make future audits far easier.