patent pending
Label given to a claimed invention while the Patent and Trademark Office examines the patent application. No protection from infringement exists until a patent is granted, but this label may be used to notify customers and competitors that a patent is being sought. This phrase (or something similar) should only be used if a patent application has actually been filed. A monetary penalty exists for false marking. See 35 U.S.C. § 292 .
Wex