I assume that not doing anything against Herr Lollar gives them the fear of relinquishing something for the future - offering him a license fee arrangement for sales going forward would solve that and he could always add it to the sales price. Let's face it, if anybody wants a horsehoe that won't deter him, he'll pay the asked for price. It's a product for disciples.
Hey, I'm not just a litigator, I'm also an amicable dispute resolver! And I'm neither an IP rights basher who thinks everything should be free (coming from an engineering and inventions country like Germany, that could hardly be expected, could it?
) nor someone who thinks you should knock'em dead for any and all infringements. I'm somewhere comfortably numb in between.