Techtronic Industries Co. Ltd. v. International Trade Commission, No. 18-2191 (Fed. Cir. 2019)Annotate this Case
Chamberlain's patent discloses improved “movable barrier operators,” such as garage door openers. The patent describes a need for “a passive infrared detector for controlling illumination from a garage door operator which could be quickly and easily retrofitted to existing garage door operators” and discloses as its invention “a passive infrared detector for a garage door operator,” contained in a wall control unit, along with an ambient light comparator and a microcontroller. The International Trade Commission determined, 19 U.S.C. 1337, that the Appellants’ importation of garage door opener products infringed the patent and entered limited exclusion orders and cease and desist orders. The Federal Circuit vacated the orders, concluding that the Commission erred in its construction of “wall console,” a term in each of the patent claims. Although claim terms are normally given their ordinary and customary meaning, as understood by persons of ordinary skill in the art in view of the specification and prosecution history, Chamberlain disavowed coverage of wall consoles without a passive infrared detector. The term is properly construed as a “wall-mounted control unit including a passive infrared detector.” The parties agree that the Appellants do not infringe the patent under that construction.