Every once in a while something like this comes up in HN and the top voted answer is always “find a lawyer”.

My 2 cents - don’t.

You want compensation, you want to direct the roadmap. Your employer wants ownership. Where is the conflict?

Why make one?

(P.S. - my legal experience “peaked” about a decade ago when I hired Andrew Valentine, managing partner of DLA Piper Palo Alto to help bridge what should have been an easy win-win. We ended with a whole lot of losers. I got a full refund, though, so yah.)

(Also - Andrew, in case you read this, you never sent me the invoice for the out-of-pocket expenses you paid to UPS documents to San Bruno. I’d be happy to pay those. Contact in profile.)