In Valeant Pharmaceuticals North America LLC v. Mylan Pharmaceuticals Inc., No. 2019-2402 (Fed. Cir. Nov. 5, 2020), the Federal Circuit clarified the venue analysis of 28 U.S.C. § 1400(b), which controls venue for patent infringement cases.  Section 1400(b) provides that an action for patent infringement may be brought in the judicial district where the

Last week, the Federal Circuit denied Sandoz’s petition for an en banc rehearing of its precedential July 1st panel decision upholding two of Immunex’s patents covering Enbrel®.

As explained in the petition, Immunex was the first to make etanercept, the tumor necrosis factor (TNF) receptor fusion protein that is the active ingredient in Enbrel® (used

In a recent precedential opinion[1], the Federal Circuit rejected arguments by Amgen that a single step purification process used by Sandoz for its G-CSF biosimilar infringed claims of Amgen’s patent describing a multistep purification procedure for proteins expressed in a non-mammalian system.

In this case, the Federal Circuit explained that the doctrine of

On April 25, 2019, the U.S. Food and Drug Administration (“FDA”) approved new biosimilar product EticovoTM (etanercept-ykro) by Samsung Bioepis.  Eticovo is a biosimilar to Enbrel® (etanercept), which is marketed by Amgen, Inc. (“Amgen”).  Like Enbrel, Eticovo was approved across five eligible indications for the treatment of rheumatoid arthritis, ankylosing spondylitis, plaque psoriasis, psoriatic