Honeywell has not licensed any technology to Nest.
There's nothing really fancy about a thermometer, humidity sensor, IR motion sensor and a bit of software anyway. Which is why Nest had no trouble identifying prior art to each of the patents Honeywell tried to assert (and made no offer to license). They carved their niche by being the only company that cared to make the most of some simple inputs and packaged them up in a way that looked different from the rest of the market. It's somewhat similar to the iPod/iPhone story.
