Except, he can challenge Microsoft's patent on prior art terms
1. MSFT attempts to assert patent
2. Defender says haha
3. MSFT files motion with court
4. Defender calls MSFT: "you want your patent invalidated, because this is how you get your patent invalidated"
5. <back and forth>
6. Defender pays $, MSFT withdraws motion from court.
even more likely:
1. MSFT doesn't take companies to court on patents - that's not their business model
2. In the next mega cross-licensing negotiation between MSFT and <Google, IBM, etc> said patent it added to a pile of 1000s of others.
3. Little stack pays bigger stack by the inch (not joking)
4. Your cellphone is $1 more expensive
5. Patent attorney's kid goes to college. Yours does too.
6. Attorney's kid goes debt-free. Yours does not.
(pls correct me if there's a more modern version)
Except, he can challenge Microsoft's patent on prior art terms