[CamperBob]

I like the idea but it seems overly complicated. I think if I were to sign an agreement like this, I would simply insist that any patents I assign to the company be encumbered by a requirement to obtain permission from me before any attempt to enforce their claims.

All of this feel-good language about "defensive purposes" sounds vague and easy for lawyers to twist. Instead, if I'm going to design land mines for you, you have to give me a switch to disarm them. Problem? Hire somebody else.