(March 27, 2019, 1:17 PM EDT) -- ALEXANDRIA, Va. — In a March 26 petition for inter partes review (IPR), Abbott Vascular Inc. and two related Abbott entities (Abbott, collectively) and others assert that a claimed vascular stent with horizontal branches having waveforms thinner than vertical branches was taught by prior art (Abbott Vascular Inc., et al. v. FlexStent LLC, No. IPR2019-00882, PTAB)....