App is now a generic name, and thus it cannot be trademarked and existing trademarks are invalid. That's just how trademarks work. It doesn't matter that it did

App is now a generic name, and thus it cannot be trademarked and existing trademarks are invalid. That's just how trademarks work. It doesn't matter that it didn't use to be a generic name (and I recall hearing app used generically for a long time, so I don't think it was ever Apple specific).