Case: Patents/Claim Construction (D. Del.)

A federal district court in Delaware construed disputed claims in Ecobee Inc.'s action against Ecofactor Inc. for infringement of patents for systems and methods for evaluating changes in the efficiency of an HVAC system, for identifying manual inputs to and adaptive programming of a thermostat, for calculating the thermal mass of a building, and for evaluating changes in the efficiency of an HVAC system. The court construed “operational efficiency” / “operational efficiency of a heating, ventilation and air conditioning (HVAC) system” / “operational efficiency of an HVAC system;" said the preambles of claims of one patent are limiting; said “first ...