A new federal complaint alleges 20 pharmaceutical companies, including Par Pharmaceutical of Chestnut Ridge, conspired to hike generic drug prices, and over-charged consumers billions. The suit claims the companies colluded to significantly raise prices on as many drugs as possible. We reached out to Par for comment, but did not hear back. Taro Pharmaceuticals Sales and Marketing VP Ara Aprahamian of Bardonia was named along with 14 others as defendants in the case.