Amgen Chooses To Settle In US Soliris IPR Tussle

Victory Could Have Led To 2022 Market Entry

Amgen’s burgeoning biosimilar presence continues to grow apace and now the company has eyes firmly on the US market for eculizumab after brokering a deal with originator Alexion. The biosimilars developer chose to settle on three of Alexion’s patents ahead of a trial later this year.

2025_Dial
A successful IPR challenge could have led Amgen to potential market entry in 2022 or 2023 • Source: Shutterstock

Amgen has reached a settlement with Alexion Pharmaceuticals in patent-litigation proceedings over Soliris (eculizumab), picking up the rights to launch Amgen’s ABP 959 eculizumab biosimilar in the US from 1 March 2025, around two years ahead of various Soliris patents expiring.

A filing with the US Securities and Exchange Commission reveals the firms have entered into a confidential settlement and license agreement that dissolves three inter partes review proceedings instituted in August last year at

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