Reversing dismissal of this antitrust suit, the decision holds that plaintiff’s complaint adequately alleged a violation of Sherman Act section 1 by reason of NAR’s Clear Cooperation Policy which required realtors who listed properties on a rival multiple listing service, such as plaintiff’s, to also list those properties on an NAR listing service.  The complaint alleged that the claimed violation injured “consumers” of the multiple listing service–that is, the realtors listing properties for sale.  It was not necessary to allege also that the violation injured home buyers or sellers.  Plaintiff also alleged that it suffered injury from what made the Clear Cooperation Policy illegal by alleging a group boycott that prevented plaintiff as well as other would-be competitors  from entering the market.