In 2005 and 2006, Cephalon entered into settlements with the generic drug makers, Barr, Mylan, Teva, and Ranbaxy, and agreed to pay the four companies a combined total of more than $200 million, in return for agreements that would keep generic versions of Provigil from coming on the market until April 2012, instead of 2008.
In March 2006, when announcing the settlements, CEO Baldino told the Philadelphia Business Journal: "We were able to get six more years of patent protection. That's $4 billion in sales that no one expected."
Later in 2006, a class of direct purchasers (such as health plans and pharmacies) filed a lawsuit against Cephalon and the generic companies, followed soon after by a class of end-payers of Provigil, and Apotex, another generic firm. They all alleged that Cephalon, and the generic makers were engaged in anticompetitive conduct in violation of the Sherman Antitrust Act.