Actavis Group PTC EHF v Pharmacia LLC

Practice – Stay of proceedings. The claimant brought an action in the English court for revocation of the defendant's patent concerning treatment for Parkinson's disease and restless leg syndrome. Parallel proceedings concerning the validity of patent were ongoing before European Patent Office. The defendant applied for a stay of the English proceedings. The Patents Court declined to stay the proceedings, despite undertakings offered by the defendant, where the competing considerations favoured the refusal of a stay.

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