Another way this case could be acceptable, is if when eVolve received the patent, they applied it universally, to all companies manufacturing VW
devices, and asked for licensing fees (of course, some may have fought it, and the patent may not have held up for reasons listed prior in this thread). Instead,
they basically stated "we aren't going to enforce this patent, go ahead and keep doing what you all have been doing", but suddenly pull out the patent against ONE company that is making a competitive mod.