Notice letters and licensing communications are an important part of the U.S. patent system
Notice letters play an important role in the patent system. Indeed, as the Supreme Court has explained, ”[p]atents would be of little value if infringers of them could not be notified of the consequences of infringement.” Virtue v. Creamery Package Mfg., Co., 227 U.S. 8, 37-38 (1913). Patent law encourages patent holders to take reasonable steps to notify others of existing or pending patent rights and their possible infringement. In some instances, federal patent law requires patent holders to send notice letters to accused infringers to preserve their patent enforcement rights and ability to collect damages. Notice letters and licensing communications can also serve the interests of accused infringers. Once a patent holder has made its rights known, the accused infringer can determine whether to cease the allegedly infringing activities, negotiate a license, or decide to continue its activities based on an assessment of non-infringement or invalidity.