Patent dispute on Ultracet seen intensifying

With 10 local pharmaceutical firms filing their nullification trial over Ultracet (tramadol HCl + acetaminophen) of Janssen Korea, Hanmi Pharm has also followed the suit with its revised patent on November 8.

Ultracet is indicated for the relief of moderate to severe pain in addition to the short-term management of acute pain. Its production value is estimated at 24.0 billion won last year....