Apple's motion to add the new Samsung GALAXY S4 to an ongoing patent lawsuit was rejected by a judge. The courts seem to be getting tired of the continual battles between Apple and others. The judge, US Magistrate Judge Paul S Grewal, noted that an additional product would be a "tax on the court's resources."
Each time these parties appear in the courtroom, they consume considerable amounts of the court's time and energy, which takes time way from other parties who also require and are entitled to the court's attention.
Apple has said that the judge's rejecting of the GALAXY S4 would require the company to file another lawsuit. It doesn't appear that Apple plans to quit its ongoing legal assault of Samsung anytime soon. Apple has so far been successful in the United States, though legal battles around the world have been mixed.