Patent Maintenance Fees: What Happens If You Don't Pay?

Most inventors assume that once the USPTO grants their patent, the hard part is over. The application process took years. The prosecution was grueling. The issue fee is paid. The certificate arrives, and you frame it on the wall.

Then, three and a half years later, you get a notice that you owe the government more money. Or worse -- you don't get the notice, because you moved, or it went to an old attorney's address. And your patent quietly dies.

This happens far more often than it should. I've seen it firsthand with clients across Dutchess County and the Hudson Valley who came to me after the damage was already done. A patent is not a one-time purchase. It's more like a lease. You have to keep paying to keep it.

The Three Payment Windows

U.S. utility patents require three maintenance fee payments over their 20-year life. Each payment is due within a six-month window:

• First payment: Due between 3 and 3.5 years after the patent grant date
• Second payment: Due between 7 and 7.5 years after grant
• Third payment: Due between 11 and 11.5 years after grant

The fees escalate significantly at each stage. For a large entity (typically a company with more than 500 employees), the current fee schedule is approximately $2,000 at the 3.5-year mark, $3,760 at 7.5 years, and $7,700 at 11.5 years.

Small entities -- companies with fewer than 500 employees, independent inventors, and nonprofits -- pay half those amounts. Micro entities, which include individual inventors who meet specific income thresholds and have filed fewer than five patent applications, pay one quarter.

That third payment at 11.5 years can sting. But compared to what the patent is worth, it's almost always a good investment.

What Happens When You Miss the Deadline

Miss the payment window and your patent doesn't immediately vanish. The USPTO provides a six-month grace period after each deadline. During that grace period, you can still pay -- but there's a surcharge on top of the maintenance fee.

If you miss the grace period entirely, the patent expires. It's gone. The technology enters the public domain, and anyone can use it without your permission.

Can You Bring a Dead Patent Back?

Sometimes. The USPTO allows a petition to revive an expired patent under certain conditions. You'll need to demonstrate that the failure to pay was unintentional. The petition fee itself is substantial, and you still owe the maintenance fee plus the surcharge. The whole process can cost several thousand dollars in fees alone, not counting attorney time.

And it's not guaranteed. The USPTO scrutinizes these petitions. If too much time has passed, or if the explanation doesn't hold up, the petition can be denied. Third parties who began using the technology during the lapse may also have intervening rights that limit what you can enforce even if the patent is revived.

Prevention is far cheaper than the cure.

Why Some Patent Owners Let Patents Expire on Purpose

Not every expired patent is an accident. Some patent owners make a deliberate decision to stop paying maintenance fees because the invention is no longer commercially valuable. The product never took off. The market shifted. A newer technology made the patented approach obsolete.

That's a perfectly rational choice. There's no obligation to maintain a patent that isn't earning its keep. But it should be a conscious decision, not an oversight.

I've worked with inventors in Poughkeepsie and Newburgh who inherited patents from earlier business ventures. The first question we address together is whether the maintenance fees are worth paying given the patent's remaining commercial life. Sometimes the answer is no, and that's fine.

Design Patents Are Different

One point of confusion I should clear up: design patents do not require maintenance fees. A design patent, which protects the ornamental appearance of an article, lasts 15 years from the grant date with no additional payments required. This only applies to utility patents -- the ones that protect how an invention works.

How I Handle This for My Clients

I always set calendar reminders for my clients. Missing a maintenance fee deadline is one of the most preventable -- and costly -- mistakes in patent law. We track every patent in our system with its grant date and the three upcoming payment windows. Clients receive advance notice well before each deadline.

If you have patents and you're not sure whether your maintenance fees are current, check. The USPTO's Patent Center lets you look up any patent by number and see its fee status. Or call our Fishkill office and we'll look it up for you. It takes five minutes and could save you a patent worth far more than the fee.