Elbit Systems of America, LLC v. Thales Visionix Inc., No. 17-1355 (Fed. Cir. 2018)Annotate this Case
Entitled “Motion-Tracking,” the 159 patent generally relates to “tracking motion relative to a moving platform, such as motion-base simulators, virtual environment trainers deployed on board ships, and live vehicular applications including helmet-mounted cueing systems and enhanced vision or situational awareness displays” and purportedly “enables the use of inertial head-tracking systems onboard moving platforms by computing the motion of a ‘tracking’ Inertial Measurement Unit (IMU) mounted on [a head-mounted display] relative to a ‘reference’ IMU rigidly attached to the moving platform.” This eliminates the need to calculate an object’s position relative to the ground, which improves functionality when “tracking on moving vehicles, where millimeter-level vehicle position data is generally not available.” On inter partes review, the Patent Trial and Appeal Board rejected a claim of obviousness. The Federal Circuit affirmed. Substantial evidence supports the PTAB’s conclusion of nonobviousness.