Many in the tech world and Washington have railed against the encroaching and limiting effect of patents on innovation, but when the chips are down, IP and patents remain key cornerstones in how tech companies and their founders are making sure they will be able to build their businesses and stick around for the long haul. Tony Fadell, the legendary former hardware supremo at Apple and now CEO and co-founder of new smart home device startup Nest, today revealed that Nest already had 100 patents granted, with 200 more on file with the USPTO and another 200 ready to file.