FareChase uses software to “scrape” pricing information from American Airlines’ website.  AA has now enjoined FareChase in Texas state court on a trespass theory.  Denise (attorney for FareChase), has all the relevant papers, including a copy of the Temporary Injunction.  Quote from another FareChase attorney:

. . . the court has, by this order, created a new property right not only for AA but for all large companies with Internet Web sites: the right to monopolize forever public information.

More on asserting rights in published prices here and here.