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Regeneron can't get injunction against Amgen over eye medication, US appeals court says

By Nick Robertson ( March 17, 2025, 13:45 GMT | Insight) -- The US Court of Appeals for the Federal Circuit affirmed Friday that Regeneron is not likely to succeed on the merits in patent litigation against Amgen over its eye medication Eylea, denying Regeneron’s motion for a preliminary injunction. The court affirmed that the Amgen biosimilar formulation’s exclusion of the “buffer” substance in the drug differentiates it from Regeneron’s original and other biosimilars.Amgen will not be hit with a preliminary injunction over its biosimilar version of Regeneron’s Eylea eye medication, the US Court of Appeals for the Federal Circuit affirmed on Friday in a precedential decision. Regeneron is not likely to succeed on the merits in its infringement claims, the court held, as Amgen’s biosimilar drug is differentiated from Regeneron’s original....

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