As with 90% of the patents that come out of Gentex, it is probably just a slight adjustment to a patent that they already own. You need to keep them from expiring.
However, the big concern is the fact that car companies are looking at replacing the inner rear view mirror completely with a camera display.
Nissan is working very hard at it, and they currently buy a lot of dimming mirrors with homelink.
Yes, Gentex does supply dimming mirrors with a small display behind the transflective glass, but that does not mean that they are best suited to supply the next generation display mirrors.
Since Fred does not let his R&D group develop anything new, they could be in trouble.
He needs to retire so Newton can get something new coming out of that place.