I came here thinking the same. Nikon, apparently, have a financial incentive NOT to agree an amicable continuation of the licensing agreement as once the four year stand-still is up they can sue (probably for more as they can claim wilful infringement). That looks more like an unintended consequence of the stand-still period though. Also it's higher risk as it isn't a given the court will find in their favour and if they've deliberately contrived the current situation as a means to send in the lawyers I imagine the court probably won't be that impressed.
Time to grab some popcorn if silicon lithography is your thang.
