Not sure what this patent is for. The circuit used for the TI TPS63020 is published by TI. Would TI have to licence it from NotCigs? The other part of the claim mentions a Linear Regulator. Nobody is going to use one of these for an e-cig because of the poor efficiency. Most of the step down is lost in heat through the regulator. Why use one when you can use a PWM unit?
All TIs buck/boost products come with a circuit diagram. Are you telling me that sticking an atomiser across the Vout of these circuits is a patent infringment?
The only patents involved here are TIs for the chip itself.
If he can do this in the US, I suggest someone file another patent, using a PWM with a digital potentiometer, then claim licensing of NotCig when they finally get up to date.
Here's such a circuit published by a modder on ECF:
View attachment 37558
I can't remember who posted it, but get your patent in quick.