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Wakunaga takes Japanese quinolone case to Supreme Court

This article was originally published in Scrip

Executive Summary

Wakunaga Pharmaceutical has taken its fight with fellow Japanese company Dainippon Sumitomo Pharma (DSP) to the Supreme Court. The small firm has appealed a recent Osaka High Court decision that rejected its claims against DSP in a long-running dispute over a terminated 1998 licensing deal for a quinolone antibacterial. DSP brought the High Court appeal following a 2007 district court decision ordering it to pay ¥890 million ($8.9 million) in damages to Wakunaga (, March 27th, 2009). Wakunaga first filed suit in 2004, claiming then that Dainippon (which merged with Sumitomo Pharma in 2005) had acted improperly.

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