Last Updated: June 21, 2026

estradiol; norethindrone acetate; relugolix - Profile


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What are the generic drug sources for estradiol; norethindrone acetate; relugolix and what is the scope of patent protection?

Estradiol; norethindrone acetate; relugolix is the generic ingredient in one branded drug marketed by Sumitomo Pharma Am and is included in one NDA. There are eight patents protecting this compound. Additional information is available in the individual branded drug profile pages.

Estradiol; norethindrone acetate; relugolix has one hundred and seventy-three patent family members in forty countries.

Summary for estradiol; norethindrone acetate; relugolix
DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for estradiol; norethindrone acetate; relugolix
Generic Entry Date for estradiol; norethindrone acetate; relugolix*:
Constraining patent/regulatory exclusivity:
Dosage:

TABLET;ORAL

*The generic entry opportunity date is the latter of the last compound-claiming patent and the last regulatory exclusivity protection. Many factors can influence early or later generic entry. This date is provided as a rough estimate of generic entry potential and should not be used as an independent source.

Paragraph IV (Patent) Challenges for ESTRADIOL; NORETHINDRONE ACETATE; RELUGOLIX
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
MYFEMBREE Tablets estradiol; norethindrone acetate; relugolix 1 mg/0.5 mg/40 mg 214846 1 2024-12-18

US Patents and Regulatory Information for estradiol; norethindrone acetate; relugolix

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 RX Yes Yes 11,793,812 ⤷  Start Trial ⤷  Start Trial
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 RX Yes Yes 11,033,551 ⤷  Start Trial ⤷  Start Trial
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 RX Yes Yes 11,957,684 ⤷  Start Trial ⤷  Start Trial
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 RX Yes Yes 12,325,714 ⤷  Start Trial Y Y ⤷  Start Trial
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 RX Yes Yes 11,795,178 ⤷  Start Trial Y Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Expired US Patents for estradiol; norethindrone acetate; relugolix

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 8,058,280 ⤷  Start Trial
Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix TABLET;ORAL 214846-001 May 26, 2021 9,346,822 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for estradiol; norethindrone acetate; relugolix

Country Patent Number Title Estimated Expiration
Australia 2017336338 ⤷  Start Trial
Taiwan 201906847 ⤷  Start Trial
Croatia P20190729 ⤷  Start Trial
Norway 20053974 ⤷  Start Trial
European Patent Office 1591446 Composés de thienopyrimidine et utilisation (Thienopyrimidine compounds and use thereof) ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for estradiol; norethindrone acetate; relugolix

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1453521 CA 2016 00016 Denmark ⤷  Start Trial PRODUCT NAME: LEVONORGESTREL OG ETHINYLOESTRADIOL; NAT. REG. NO/DATE: 56336 20151105; FIRST REG. NO/DATE: SK 17/0017/15-S 20150211
1453521 93156 Luxembourg ⤷  Start Trial PRODUCT NAME: LEVONORGESTREL ET ETHINYLESTRADIOL; FIRST REGISTRATION DATE: 20150211
1591446 2022C/501 Belgium ⤷  Start Trial PRODUCT NAME: RELUGOLIX OU UN SEL DE CELUI-CI; AUTHORISATION NUMBER AND DATE: EU/1/21/1565 20210720
1591446 301158 Netherlands ⤷  Start Trial PRODUCT NAME: RELUGOLIX OF EEN ZOUT DAARVAN; REGISTRATION NO/DATE: EU/1/21/1565 20210720
1453521 C201630040 Spain ⤷  Start Trial PRODUCT NAME: ETINILESTRADIOL Y MEZCLA DE LEVONORGESTREL Y ETINILESTRADIOL; NATIONAL AUTHORISATION NUMBER: 80340; DATE OF AUTHORISATION: 20160122; NUMBER OF FIRST AUTHORISATION IN EUROPEAN ECONOMIC AREA (EEA): 17/0017/15-S; DATE OF FIRST AUTHORISATION IN EEA: 20150211
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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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.