I feel the urge to put in my $.02, here. First, what is unique about a specific lure that its' patent applies to? I've seen "Bombers" that look and have no discernable difference to a Cordell Redfin from the 70's. Patents are finite with a 17 year life and one renewal, if memory serves. That would mean that any lure patent 34 years ago now falls into public domain. Any lure from '71 and back could be copied freely.
The point I'm making is that you must know to what the patent applies to, to say that there is an infringement.