No, the license terminates when you make a claim (of which a lawsuit is a subset of) that any 'right' of any patent claim that Facebook makes is invalid or unen

No, the license terminates when you make a claim (of which a lawsuit is a subset of) that any 'right' of any patent claim that Facebook makes is invalid or unenforceable. This would include statements to the effect: "That Facebook patent is invalid." or "Software patents are invalid."