Have you ever on nature shows seen the way chimps fight, either individually or in groups? There's a lot of screaming, jumping up and down, fake charges, throwing dirt, and very little actual fighting. This type of law suit is a lot like that. They'll make a lot of noise and then they'll settle it on the courthouse steps.
Mike Veach tells me there was a similar case between Old Charter and a brand called Charter Oak that lasted 12 years.