Um, no.
It's obvious we don't know the entire story, nor do we know how long Evolv has been in talks with Joyetech over this. And if I were a patent holder, the second I found out that someone was infringing on it, they'd be getting a letter from the lawyers. Doesn't matter if the business is raking in the bucks hand over fist. If you don't fight for your patent and/or trademark rights, allowing things to go unchecked results in a dilution of the brand making it even more difficult to win in court if you do decide to go that route.
Patent and trademark infringement should never, ever be condoned.