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Amgen ($AMGN) is about to square off once again against Regeneron ($REGN) and Sanofi over whether Praluent® should be pulled from the market.  Having prevailed at another jury trial earlier this year showing that Amgen’s PCSK9 protein patents are both valid and infringed, Amgen has renewed its bid for a court order enjoining Praluent® from the market.  The injunction hearing is scheduled for June 2019.  Over two years ago, Amgen prevailed after an earlier injunction hearing where the court ordered Praluent® to be barred from the market.  Will Amgen be able to prevail again?