Last Updated: June 25, 2026

Patent: 10,723,775

✉ Email this page to a colleague

Summary for Patent: 10,723,775

Title:	Method for purifying darbepoetin alfa
Abstract:	The present invention relates to a method for purifying darbepoetin alfa by selectively separating only a structural isoform having a high content of sialic acid from a mixture of structural isoforms of darbepoetin alfa having various contents of sialic acid. Since the method of the present invention is a novel method for purifying darbepoetin alfa which can be conveniently and simply produced, it is possible to remarkably increase productivity due to process efficiency improvement, as well as to yield high purity darbepoetin alfa when mass-producing darbepoetin alfa according to the present invention.
Inventor(s):	Lee; Yoon Jung (Yongin-si, KR), Kim; Kyung Hwa (Busan, KR), Yang; Yoo Hee (Yongin-si, KR), Yoo; Jung Min (Seoul, KR), Kim; Se Jun (Gwacheon-si, KR), Moon; Ji Hyun (Seoul, KR), Oh; Hoo Keun (Suwon-si, KR), Lee; Dong Eok (Seoul, KR), Lee; Won Jeong (Seoul, KR), Lee; Jung Rok (Busan, KR), Lee; Chung Min (Yongin-si, KR), Choi; Eun Young (Seoul, KR), Ha; Gyong Sik (Suwon-si, KR)
Assignee:	CJ Healthcare Corporation (Seoul, KR)
Application Number:	15/039,569
Patent Claims:	see list of patent claims

Details for Patent 10,723,775

Glossary

Subscribe to access the full database, or Start Trial
Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Amgen Inc.	ARANESP	darbepoetin alpha	Injection	103951	September 17, 2001	⤷ Start Trial	2034-11-28
Amgen Inc.	ARANESP	darbepoetin alpha	Injection	103951	July 19, 2002	⤷ Start Trial	2034-11-28
Amgen Inc.	ARANESP	darbepoetin alpha	Injection	103951	December 17, 2002	⤷ Start Trial	2034-11-28
Amgen Inc.	ARANESP	darbepoetin alpha	Injection	103951	December 12, 2003	⤷ Start Trial	2034-11-28
Amgen Inc.	ARANESP	darbepoetin alpha	Injection	103951	June 29, 2006	⤷ Start Trial	2034-11-28
Amgen Inc.	ARANESP	darbepoetin alpha	Injection	103951		⤷ Start Trial	2034-11-28
>Applicant	>Tradename	>Biologic Ingredient	>Dosage Form	>BLA	>Approval Date	>Patent No.	>Expiredate

International Patent Family for US Patent 10,723,775

Subscribe to access the full database, or Start Trial
Country	Patent Number	Estimated Expiration
Brazil	112016009421	⤷ Start Trial
China	105764915	⤷ Start Trial
European Patent Office	3075740	⤷ Start Trial
Hong Kong	1223633	⤷ Start Trial
Japan	2016538261	⤷ Start Trial
Japan	6232130	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.