Patented JavaScript

Another interesting line I turned up in examining JavaScript:

//hbx.js,HBX2.0,COPYRIGHT 1997-2006 WEBSIDESTORY,INC.
ALL RIGHTS RESERVED. U.S.PATENT No.6,393,479B1 &
6,766,370. INFO:http://websidestory.com/privacy

(Wrapped by me so you can read it)

Now, given how much JavaScript I've found that's obfuscated, I shouldn't be too surprised to see patent numbers in there, but I was!