Antitrust Suit: Purdue Pharma Tricked PTO

By Ben James (March 8, 2007, 12:00 AM EST) -- A drug wholesaler has filed an antitrust class action over the painkiller OxyContin, accusing the defendants of deceiving the U.S. Patent and Trademark Office to gain a monopoly on the U.S. market for the drug and using three fraudulently obtained patents to stifle competition and keep generic versions of the drug off the market....

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