Reinstating an expired patent can be a critical step for inventors and businesses seeking to preserve the value of their innovations. Whether a patent lapsed due to missed maintenance fees, administrative oversight, or unexpected operational challenges, reviving those rights requires careful attention to the relevant rules and deadlines. Working with an intellectual property litigation attorney in Florida at The Lomnitzer Firm P.A. can provide the clarity and strategic guidance needed to navigate reinstatement requirements and safeguard the intellectual property your business depends on.
Maintenance fees are periodic payments that utility patent owners must make to keep their patent in full force and effect. The purpose of maintenance fees is to ensure that patent holders maintain only actively valued patents. Patent owners who fail to make the required payments can no longer benefit from the system that provides them with patent protection. The theory behind maintenance fees is to eliminate patents from the system that no longer hold any commercial interest or monetary value.
Different types of patents have different requirements. For instance, utility patents have a maximum term of 20 years from the earliest filing date. The U.S. Patent and Trademark Office (USPTO) requires three separate maintenance payments during that 20-year term. On the other hand, design patents remain valid for 15 years from the date the USPTO issues them for applications filed on or after May 13, 2015. No maintenance or periodic fees are required for design patents. Furthermore, no maintenance or period fees are required for a pending patent application; fees accrue only after the USPTO issues a patent.
After the USPTO issues a patent, the patent holder must pay regular maintenance fees at 3.5, 7.5, and 11.5 years after the patent’s issue date. The window to pay each of these fees opens six months before each deadline. The fee amounts vary and increase over time. If the patent holder pays the required fees, the patent remains in effect. However, if the patent holder fails to pay the required fees by the deadlines, the patent will expire. Therefore, if the patent holder misses the first deadline, the patent expires four years from the date of issue, and so on.
When a patent expires, the patent holder loses the exclusivity it grants to an invention. The patent effectively enters the public domain, meaning anyone can legally make, use, offer for sale, sell, or import the invention without risk of infringement. As a result, the patent holder may be unable to pursue infringement litigation and miss out on licensing opportunities once a patent has expired, thus leading to significant devaluation of the patent.
Missed maintenance fees are the most common reason why patents expire. Therefore, using a foolproof system to avoid missed maintenance fees is crucial.
Once a patent expires, the USPTO provides only limited means to reinstate it. A patent holder can file a petition with the USPTO requesting late payment of a maintenance fee because of an unintentional delay. Along with the petition, the patent holder must pay the missed maintenance fee(s) and a petition fee. If the patent owner has missed multiple maintenance fees, reinstating the patent can be quite costly.
The patent holder also must submit a statement that the delay in payment was unintentional. Some examples of unintentional delay include administrative errors, miscommunication with agents or counsel, or internal system failures that don’t involve any bad faith or gross negligence.
A petition to reinstate a patent that has been expired for less than two years can be filed digitally through the USPTO website. However, a petition to reinstate a patent that has been expired for more than two years must be filed with the USPTO. In the event of a substantial delay (more than two years), the USPTO is likely to request and require additional information to determine whether the delay was truly unintentional.
Under 37 C.F.R. 1.378, if the USPTO determines that the failure to pay one or more patent maintenance fees was unintentional, then the USPTO may accept the petition to reinstate the expired patent. If the USPTO accepts the petition and fees, then the patent is considered no longer expired, but in full force and effect, subject to 35 U.S.C. 41(c)(2).
No. Once a patent has expired for nonpayment of maintenance fees, the owner cannot enforce it until the USPTO formally accepts the reinstatement petition. During the lapse, others may legally make, use, or sell the invention without liability for infringement. If the USPTO later reinstates the patent, the rights are restored going forward, but the owner generally cannot recover damages for activities that occurred during the period of expiration. As a result, it is especially important to act quickly and ensure the petition is properly prepared and submitted.
The USPTO looks for evidence that the missed payment was not the result of deliberate disregard, strategic delay, or gross negligence. While simple administrative mistakes or communication breakdowns often qualify, the agency may request additional documentation if the lapse lasted more than two years. The longer the delay, the more closely the USPTO examines internal procedures, recordkeeping practices, and the steps the patent owner took once the error was discovered. A Florida intellectual property litigation attorney can help assemble the type of explanation and supporting materials the USPTO expects.
Reinstatement restores the patent, but it does not fix the underlying issue that caused the lapse. Businesses should implement a reliable docketing or reminder system, designate a responsible internal contact, and ensure that outside counsel receives timely updates about ownership changes, address changes, or portfolio transfers. Many companies also conduct periodic audits of their patent portfolios to confirm that maintenance deadlines are tracked correctly. Establishing these safeguards reduces the risk of another costly lapse and helps preserve the long‑term value of the patent.
Strengthening your intellectual property rights begins with understanding how to restore them when they lapse. When a patent expires—whether due to missed maintenance fees, administrative oversight, or shifting business priorities—the path to reinstatement can be complex. Successfully navigating these rules demands more than technical knowledge; it requires strategic legal insight grounded in current practice. Contact an intellectual property litigation attorney in Florida at The Lomnitzer Firm P.A. to explore your options, document your efforts, and take the steps necessary to regain and preserve the value of their patented inventions. Call our office at (800) 853‑9692 or reach out to us today online.
