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Declaratory Judgments Regeneron

Goodwin

Status Regarding Dupixent® Litigations

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We previously reported that Sanofi and Regeneron filed a declaratory judgment action seeking a ruling that its approved Dupixent® (dupilumab) product does not infringe Amgen’s U.S. Pat. 8,679,487 (“the ’487 patent”), and that...more

Goodwin

Immunex Files Complaint Against Sanofi and Regeneron

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On April 5, Immunex (a wholly-owned subsidiary of Amgen) filed a complaint against Sanofi and Regeneron related to Sanofi and Regeneron’s Dupixent® (dupilumab) product, which received FDA approval last week. Immunex’s...more

Goodwin

Sanofi and Regeneron Take Aim on Amgen IL-4 Receptor Patent

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This week Sanofi-Aventis and Regeneron Pharmaceuticals took aim at Amgen’s U.S. Patent No. 8,679,487 on two fronts, filing a declaratory judgment action in district court and a petition for inter partes review in the U.S....more

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