That's a new one to me, but interesting, nonetheless. I'd never thought about patents in relation to headlights, but I guess it's in the bounds of reason. I tried googling to see if Woodlights were patented. Just for the heck of it, you might want to google "woodlight headlight patent" and see how many hits you get from different blogs with "woodlight-headlights-my-number-one" in the url. All dated around December 28, 2010. Talk about the invasion of the blog snachers! I'm glad I'm not trying to make money from blogging.
RtR