UnknowingFool writes "Over a year ago, Nest Labs launched the Learning Thermostat. The brainchild of Tony Fadell, former head of Apple's iPod and iPhone division, the Learning Thermostat promised a self-programming and wifi-enabled thermostat that would save energy costs. After some glowing reviews, Nest found itself in a patent infringement lawsuit against Honeywell. Nest responded with multiple claims calling Honeywell 'worse than a patent troll.' Among Nest's claims: Honeywell hid prior art (some on some previous patents that they owned) and inapplicable patents (patent on mechanical potentiometer when Nest's product does not include one). Nest's stance is that Honeywell filed the lawsuits not to extract money but to set back progress so that they can control the industry."