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Last Updated: March 26, 2026

Claims for Patent: 9,138,403

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Summary for Patent: 9,138,403

Title:	PEG-interferon-beta formulations
Abstract:	The invention relates to a liquid pharmaceutical composition comprising a pegylated IFN-β (PEG-IFN-β), an excipient, a surfactant and a buffer wherein said excipient is a polyol, wherein said surfactant is a non-ionic surfactant and wherein said buffer is a sodium acetate buffer.
Inventor(s):	Alessandra Del Rio, Joel Richard
Assignee:	Merck Serono SA
Application Number:	US12/738,375

Details for Patent 9,138,403

Glossary

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Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Biogen Inc.	PLEGRIDY	peginterferon beta-1a	Injection	125499	August 15, 2014	⤷ Start Trial	2028-12-18
>Applicant	>Tradename	>Biologic Ingredient	>Dosage Form	>BLA	>Approval Date	>Patent No.	>Expiredate

International Patent Family for US Patent 9,138,403

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Country	Patent Number	Estimated Expiration
South Africa	201001908	⤷ Start Trial
World Intellectual Property Organization (WIPO)	2009080699	⤷ Start Trial
World Intellectual Property Organization (WIPO)	2009077582	⤷ Start Trial
United States of America	8827655	⤷ Start Trial
United States of America	2010310380	⤷ Start Trial
United States of America	2010239529	⤷ Start Trial
Slovenia	2234645	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration

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