Both cases you link to are about trademarks. Patents and trademarks are unrelated. "Patent troll" has the connotation of an organization or individual who buys

Both cases you link to are about trademarks. Patents and trademarks are unrelated. "Patent troll" has the connotation of an organization or individual who buys cheap patents and sue other organizations on mostly bogus claims related to these patents, hoping that the other side won't want to bother and just settle the matter. That's not Arm's business model.