This should be a direct link to evlves patent.
Patent US8820330 - Electronic vaporizer that simulates smoking with power control
I scanned the patent, didn't try to read it in detail. It appears to me they are claiming rights to most any means of regulating watts to any device used for inhaling vapor as we customarily do. The first claim,
"a user input device configured to allow a user to select a wattage setting from a plurality of wattage settings, wherein the wattage setting corresponds to a power level in watts to be delivered to a heating element for vaporizing a material during a simulated smoking session;"
I believe they mean any method of regulating watts for the purpose of supplying power to an atomizer. They didn't invent ecigs and didn't invent regulatied power via voltage or regulted watts in thousands of other devices. They claim a patent on contoling a vaporizer by watts rather than volts or wire resistance. They don't present any specific way of doing it. They just want to own the idea of doing it no matter how it's accomplishedd. IF I'm understanding the claims correctly I don't think it's a slam dunk for Evolv. I'm guessing there have been plenty of patent lawsuits that are similar and will be used by one side or the other, assuming it goes to trial.
I'm a life long garage inventor. I developed some novel and useful things that I manufactured and brought to market and made money. Products included some patented items but the money makers were not patented. I protected the business by being first to market AND capitalizing on that by delivering top quality for a fair price or, to keep competitors at bay, was the least cost provider for certain key items. (No I'm not going to get into specifics.) Manufacturing couldn't be simpler, buy raw materials, add value, sell for a profit. The more of something you can make the closer the cost will come to the bare cost of raw materials. An invention, to be patentable needs two things, novelty and utility. So, is the evolve invention sufficiently novel, is it so unobvious, that it deserves patent protection? I suspect that's what the dispute will come down to.
I didn't buy a DNA 40 because it was too much money for what was offered--for me. I would by a DNA200 device, if the programing features were available in a single 18650 mod. There needs to be a DNA75 with all the DNA capabilites except power. (I'm really talented at being out of step with the market.)