CenTrak, Inc. v. Sonitor Technologies, Inc.
CenTrak’s 909 patent, entitled “Methods and Systems for Synchronized Ultrasonic Real Time Location,” relates to systems for real-time location (RTL), which allow users to locate and identify portable devices in a facility. Hospitals, for example, might use RTL systems to track equipment and patients. The asserted claims generally recite five components: ultrasonic (US) base stations; portable devices (i.e., tags); a server; radio frequency (RF) base stations; and a backbone network that connects the server with the RF base stations. In an infringement suit, the district court entered summary judgment several claims invalid for lack of written description and that other claims were not infringed. The Federal Circuit reversed, finding that genuine issues of material fact remain as to whether disclosure of the implementation details that the district court identified is necessary to satisfy the written description requirement; there is a material dispute of fact as to whether the named inventors actually possessed an ultrasonic RTL system at the time they filed their patent application or whether they were “leaving it to the industry to complete an unfinished invention.” CenTrak’s evidence raised a triable issue of fact regarding infringement. View "CenTrak, Inc. v. Sonitor Technologies, Inc." on Justia Law