[toomuchtodo]

Talk to an IP attorney, be prepared to have them represent you. Their job is to find either legal statute or a contractual gap to quash the claim on your IP.

[thrownaway98723]

Thanks for the reply. I've talked to 3 now. I haven't gotten great advise. That's an expensive route to take as well.

[DamonHD]

There are good patent attorneys: I used one. (And my brother is one!)

Have you tried (say) Marks & Clerk?

[thrownaway98723]

I haven't, I will check them out, thank you. I've only tried ones I found online. I have two friends to just recommended IP lawyers they know personally so I'm reaching out to them now.