Patent battle defeat hits GSK

12 April 2012

GLAXOSMITHKLINE fell 31p to 1699p on Thursday night after losing a legal patent battle in the US which could allow Israel's Teva Pharmaceuticals rights to launch a rival to GSK's best-selling antibiotic Augmentin.

GSK is to appeal against the ruling as it and other drug giants face a wave of actions by companies keen to launch cheap generic versions of big sellers.

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