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By J.D. Houvener
Patent Attorney and Founder

Do Patents Expire? Understanding the Time Limits on Patent Protection

Patents provide inventors with exclusive rights to their innovations, offering a critical competitive edge. But like most legal protections, patents don’t last forever. Whether you’re a patent holder or a business considering launching a product, understanding patent expiration is essential. In this article, we’ll explore how long patents last, the implications of their expiration, and how this affects the marketplace.

The Lifespan of a Patent

Patents generally fall into two categories—utility patents and design patents. Each type of patent has a different lifespan.

  • Utility patents, which protect the functional aspects of an invention, last for 20 years from the date of filing.
  • Design patents, which protect the ornamental design of an object, last for 15 years from the date of grant.

This means that for a significant period of time, the patent holder enjoys a limited monopoly on their invention, allowing them to be the only one who can produce, sell, or import the product in the countries where the patent is granted.

Explore more about utility patents and design patents on Bold Patents Law Firm’s website.


Key takeaway: Utility patents last 20 years, while design patents last 15 years, giving patent holders exclusive rights to their inventions for a significant period.


What Happens When a Patent Expires?

Once a patent expires, the invention enters the public domain, meaning that anyone can legally produce, sell, or import the product without needing the original inventor’s permission. This expiration can lead to an influx of similar products flooding the market, often at lower prices, especially from countries with cheaper manufacturing options.

For instance, it’s common to see products that were previously protected by a patent suddenly being produced in bulk by overseas manufacturers, especially when the original patent was held by a U.S.-based company. This is perfectly legal, as the patent holder’s exclusive rights cease once the patent expires.

You can explore more about how expired patents affect the market at Bold Patents’ Patent Expiration Page.

Early Expiration: The Role of Maintenance Fees

While patents are designed to last for a set number of years, they can expire early if the patent holder fails to pay the required maintenance fees. For utility patents, maintenance fees are due at 3.5, 7.5, and 11.5 years after the patent is granted. If these fees aren’t paid, the patent can lapse, effectively ending the holder’s exclusive rights earlier than expected.

This system ensures that only those patents with active commercial or strategic value remain enforceable. If a patent is no longer profitable, many inventors choose to let it expire rather than pay the fees.

Discover more about patent maintenance fees and the renewal process at Bold Patents’ Maintenance Fees Section.


Key takeaway: Utility patents require maintenance fees to stay in effect. Failure to pay these fees results in early expiration.


The Policy Behind Patent Expiration

Why do patents expire at all? The answer lies in the balance between rewarding innovation and promoting competition. Patent laws are designed to encourage inventors to share their ideas with the world. In exchange for this public disclosure, inventors are given exclusive rights to their innovations for a limited period.

However, the protection is intentionally temporary. This limited duration ensures that after a reasonable period—15 or 20 years—the invention becomes available for others to use, allowing for greater competition and further innovation in the industry.

By expiring, patents help level the playing field and drive costs down, benefiting consumers. Without this expiration, industries could stagnate under monopolistic control, with little incentive for improvement or cost reduction.

Learn more about the balance of patent protection and innovation at Bold Patents’ Patent Law Insights.


Key takeaway: Patents expire to foster competition and innovation, striking a balance between rewarding inventors and promoting progress.


Opportunities for Entrepreneurs: Expired Patents

Patent expiration doesn’t only benefit competitors; it also creates opportunities for entrepreneurial-minded individuals who can now legally produce products that were once protected. Expired patents provide a treasure trove of innovations that can be manufactured and sold without fear of patent infringement.

Entrepreneurs can capitalize on these expired patents by bringing similar products to market, often at a lower cost, without having to invest in the research and development required to create a new product. This tactic is especially useful for businesses looking to offer more affordable alternatives in the marketplace.

Explore how expired patents create opportunities for new business ventures at Bold Patents’ Entrepreneurial Services.

The Downsides for Patent Holders

While patent expiration opens the door for competition, it can be a challenge for patent holders. Products that were once protected may suddenly face a flood of copycat versions, often produced at a lower cost. In the months or years leading up to a patent’s expiration, businesses often need to think strategically about how to maintain a competitive edge once their exclusivity ends.

This might involve pursuing new patents for improved versions of their product, diversifying their product offerings, or securing trademarks and trade secrets that will continue to protect their brand and market position after the patent expires.

Find out how patent holders can protect their innovations even after expiration at Bold Patents’ Post-Patent Strategies Page.


Key takeaway: Entrepreneurs can capitalize on expired patents, while inventors must plan for the end of their patent’s lifespan by diversifying and seeking new protections.


Final Thoughts

Patent expiration is an inevitable part of the innovation lifecycle. While it might seem like a drawback for patent holders, it plays an essential role in promoting progress and competition. Whether you’re an inventor managing a patent portfolio or an entrepreneur looking to capitalize on expired patents, understanding how and why patents expire is critical to your business strategy.

At Bold Patents, we help inventors and entrepreneurs alike navigate the complex world of patents—from securing and maintaining patents to preparing for expiration and post-patent strategies.


Call to Action

If you have questions about your patent or need help navigating the expiration process, reach out to the experts at Bold Patents Law Firm. Book a free discovery call today by visiting Bold Patents Contact, and let us help you secure and protect your intellectual property for the long term.

About the Author
J.D. Houvener is a Registered USPTO Patent Attorney who has a strong interest in helping entrepreneurs and businesses thrive. J.D. leverages his technical background in engineering and experience in the aerospace industry to provide businesses with a unique perspective on their patent needs. He works with clients who are serious about investing in their intellectual assets and provides counsel on how to capitalize their patents in the market. If you have any questions regarding this article or patents in general, consider contacting J.D. Houvener at https://boldip.com/contact/