The Leahy-Smith America Invents Act (AIA), signed into law on September 16, 2011, contained significant changes to the U.S. patent law. A central feature of the new law is the transition from a first-to-invent patent system to a first-to-file system. In apparent recognition of the value of trade secret protection to United States businesses and the US economy, the AIA enhances protection for trade secret assets and non-patented inventions by expanding a defense to patent infringement based on earlier invention and use, commonly referred to as the “prior user rights defense”.
Whereas the law previously provided prior user rights only for business method patents, the new statute extends to patents covering all technologies. Under the new statutory provisions in the law, third parties who can demonstrate that they were using an invention commercially for at least one year prior to the filing date of a patent application relating to such invention will be able to invoke the prior user rights defense when the circumstances defined by the statute are met. However, the AIA does include several limitations and exceptions to the prior user rights defense, including a prohibition against license, assignment or transfer of the defense except in connection with the assignment or transfer of the entire business, a limitation on the geographic area to which the invention was used before the critical date, and an explicit exception to the defense for patents owned by or assigned to universities.
In its January 2012 report to Congress, the US Patent and Trademark Office (USPTO) indicates that these prior user rights address the inherent inequity a first-inventor-to-file system creates between an earlier commercial user and a later patentee. The USPTO asserts that this defense is pro-manufacturing and pro-jobs because it rewards businesses which put new technology into commercial use. However, for any business making a decision between maintaining a technology as a trade secret and filing a patent application, several factors need to be considered.
The statutory limitations placed on the prior user rights must be carefully considered. These limitations include the risk that another files a patent application less than a year before your first commercial use which renders the defense inapplicable, and a geographic limitation on the defense. Other factors to consider include more traditional factors assessed in making trade secret determinations, including how readily one may reverse engineer a commercial process/product and how readily the business can maintain control over the trade secret. Additionally, if a business is operating internationally, the extent to which foreign countries have similar provisions in their laws must also be considered. If you are considering whether to maintain a trade secret or file a patent application, you should discuss the specific details of your circumstances with your patent professional in order to assess your specific situation.
