In short, want to capture concert on phone cam? Not anymore. I hope no one ever tries to copy this evil design.
I understand the technology works via infrared. Just put an infrared filter over your camera and you good to go ;].
They'll never do it because then the iPhone would be the only gadget at a gig that couldn't record it.
Apple often patents things that they never use. Remember the "click-wheel touch-screen" ideas touted for the original "touch-screen iPod" in 2006? Or the swinging-down iPad docking station screen?
If Apple patents it, you'll find no-one will want to license it off them, so then no phone company will have this feature, so then the MAFIAA won't be able to insist that phones support this feature.
So Apple, is, in effect, supporting the concert bootleg tradition.