By Brent Kendall 

WASHINGTON-- Teva Pharmaceutical Industries Ltd. will pay $1.2 billion to settle government allegations its Cephalon subsidiary paid generic-drug makers to delay competing versions of the sleep-disorder drug Provigil.

The Federal Trade Commission unveiled the settlement Thursday morning, marking the first time the FTC has obtained monetary remedies for drug purchasers in a "pay for delay" case.

Teva's price tag for the settlement will include credit from private settlements the company has already agreed to pay in similar Cephalon-related litigation, including a $512 million settlement in April. That means the company's new financial commitment in the FTC deal is considerably less than the full $1.2 billion amount.

The FTC will hold the settlement money in an escrow account that will be available to compensate drug purchasers, including wholesalers, pharmacies and insurers, who overpaid for the drug, the commission said.

In another portion of the settlement, Teva agreed not to enter into similar types of drug industry agreements in the future that can postpone the introduction of generic drugs.

The settlement comes ahead of trial proceedings that were scheduled to begin Monday in a Philadelphia federal court.

The Wall Street Journal reported earlier Thursday that the settlement was imminent.

The agreement is a milestone in the FTC's long-running campaign to stop deals in which brand-name drug makers pay generic-drug competitors to drop patent lawsuits that could lead to the earliest possible market entry of lower-cost generic medicines.

The FTC has had mixed success in its enforcement actions, but it won a Supreme Court ruling in 2013 that provided a significant boost to its efforts. The Cephalon case was being watched closely as an early test for how lower courts would apply the Supreme Court's decision.

"I believe this settlement brings us another step closer to stopping these illegal arrangements," FTC Chairwoman Edith Ramirez said at a news conference. Such deals burden patients, businesses and taxpayers with billions of dollars in higher prescription drug costs, she said.

Teva spokeswoman Denise Bradley said, "We are pleased to have reached an agreement with the government." Teva believes the settlement "is the right path for our company, for the industry and for the patients we serve," she said.

Cephalon didn't admit liability or wrongdoing as part of the settlement.

The FTC's lawsuit has been a long road, dating back to 2008 when Cephalon was an independent company. Teva bought the drug maker in 2011.

The FTC alleged Cephalon collectively compensated several generic-drug makers, including Teva, about $300 million in exchange for abandoning challenges to the patent for Provigil and to refrain from selling generic versions of the drug until 2012. The agreements caused consumers and others to pay hundreds of millions of dollars more for the drug than they would have paid annually if inexpensive generic alternatives were available, the commission alleged.

Antitrust litigation rarely goes to trial, as defendant companies can face high monetary damages if they lose. The judge overseeing the Cephalon case ruled in April that the FTC could seek disgorgement of Cephalon's allegedly ill-gotten profits, a dollar figure much larger than what Teva will pay in the settlement.

Write to Brent Kendall at brent.kendall@wsj.com

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