You have finally perfected your product, and a buyer is ready to sign. While this is an exciting milestone for many Texas inventors, it could also come with legal hurdles.
Under U.S. patent law, you may lose your right to a patent if you sell your invention or even just offer to sell it before filing an application. These business steps can create a serious problem: the on-sale bar. Familiarity with how it works and what can trigger it can help you avoid disqualification from receiving a patent before you ever file.
The on-sale bar
This is a rule under federal patent law where a person may not obtain a patent if the invention was publicly used, offered for sale or made accessible to the public before the filing date. To see if the bar applies, courts generally try to answer these questions:
- Was the product a subject of a commercial offer for sale?
- Did the invention have a working prototype or detailed technical drawings that indicated it was ready for patenting?
The on-sale bar is meant to prevent inventors from waiting too long to file a patent after commercially exploiting an invention. If an invention meets the conditions above, that prior activity may block the United States Patent and Trademark Office (USPTO) from granting the patent.
Common pitfalls to watch out for
While you may not explicitly offer your product for sale or public use, there are other ways you can prompt the on-sale bar without knowing. Many business owners think a confidential sale of their invention under a Non-Disclosure Agreement (NDA) is safe. In reality, even a private commercial sale can trigger the bar.
Additionally, providing your product to a customer for testing can be seen as a sale if money changes hands or if the primary purpose is not strictly experimental. Even presenting your invention at trade shows and conferences can inadvertently cross the line from pitching it to offering it for sale.
Understanding the one-year grace period
The U.S. generally provides a year-long grace period from the first offer of sale to file your application. However, this may only apply in Texas and across the country as many foreign countries have absolute novelty requirements. If you sell your invention in the U.S. today, you may lose the ability to patent it in Europe or Asia immediately, regardless of the one-year rule.
Protecting your innovation
The on-sale bar serves as a strict reminder that the window for patent protection is narrow and easily compromised. If you think your invention may be close to market, filing a provisional patent application early can prevent business development from blocking your ability to secure protection. A lawyer can audit your commercial activities to help ensure your filing strategy aligns with your sales goals.