Last Updated: November 8, 2026

Ospemifene - Generic Drug Details

Name: ospemifene Generic Launch, Drug Patent, and Exclusivity Dataset
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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What are the generic drug sources for ospemifene and what is the scope of patent protection?

Ospemifene is the generic ingredient in two branded drugs marketed by Hetero Labs Ltd V and Duchesnay, and is included in two NDAs. There are two patents protecting this compound. Additional information is available in the individual branded drug profile pages.

One supplier is listed for this compound.

Summary for ospemifene

International Patents:	53
US Patents:	2
Tradenames:	2
Applicants:	2
NDAs:	2
Drug Master File Entries:	6
Finished Product Suppliers / Packagers:	1
Raw Ingredient (Bulk) Api Vendors:	59
Clinical Trials:	11
Patent Applications:	859
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for ospemifene
What excipients (inactive ingredients) are in ospemifene?	ospemifene excipients list
DailyMed Link:	ospemifene at DailyMed

Recent Clinical Trials for ospemifene

Identify potential brand extensions & 505(b)(2) entrants

Sponsor	Phase
Tongji Hospital	EARLY_PHASE1
Hospital Clinic of Barcelona	Phase 4
Emory University	Phase 4

See all ospemifene clinical trials

Pharmacology for ospemifene

Drug Class	Estrogen Agonist/Antagonist
Mechanism of Action	Selective Estrogen Receptor Modulators

Anatomical Therapeutic Chemical (ATC) Classes for ospemifene

G03XC	Selective estrogen receptor modulators
G03X	OTHER SEX HORMONES AND MODULATORS OF THE GENITAL SYSTEM
G03	SEX HORMONES AND MODULATORS OF THE GENITAL SYSTEM
G	Genito-urinary system and sex hormones

Paragraph IV (Patent) Challenges for OSPEMIFENE

Tradename	Dosage	Ingredient	Strength	NDA	ANDAs Submitted	Submissiondate
OSPHENA	Tablets	ospemifene	60 mg	203505	1	2020-12-29

US Patents and Regulatory Information for ospemifene

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Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013		RX	Yes	Yes	8,642,079	⤷ Start Trial	Y			⤷ Start Trial
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013		RX	Yes	Yes	8,236,861	⤷ Start Trial				⤷ Start Trial
Hetero Labs Ltd V	OSPEMIFENE	ospemifene	TABLET;ORAL	215574-001	Feb 13, 2024		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ 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 ospemifene

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013	8,772,353	⤷ Start Trial
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013	6,245,819	⤷ Start Trial
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013	9,241,915	⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>Patent No.	>Patent Expiration

EU/EMA Drug Approvals for ospemifene

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Company	Drugname	Inn	Product Number / Indication	Status	Generic	Biosimilar	Orphan	Marketing Authorisation	Marketing Refusal
Shionogi B.V.	Senshio	ospemifene	EMEA/H/C/002780Senshio is indicated for the treatment of moderate to severe symptomatic vulvar and vaginal atrophy (VVA) in post-menopausal women.	Authorised	no	no	no	2015-01-14
>Company	>Drugname	>Inn	>Product Number / Indication	>Status	>Generic	>Biosimilar	>Orphan	>Marketing Authorisation	>Marketing Refusal

International Patents for ospemifene

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Country	Patent Number	Title	Estimated Expiration
Austria	E387910		⤷ Start Trial
Australia	2005211958	Method for enhancing the bioavailability of ospemifene	⤷ Start Trial
Brazil	PI0507661	método para aumentar a biodisponibilidade de um composto terapeuticamente ativo, e, uso de um composto ativo	⤷ Start Trial
>Country	>Patent Number	>Title	>Estimated Expiration

Supplementary Protection Certificates for ospemifene

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Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
1713458	C20150029 00165	Estonia	⤷ Start Trial	PRODUCT NAME: OSPEMIFEEN;REG NO/DATE: EU/1/14/978 19.01.2015
1713458	92736	Luxembourg	⤷ Start Trial	PRODUCT NAME: OSPEMIFENE DANS TOUTES LES FORMES PROTEGEES PAR LE BREVET DE BASE; FIRST REGISTRATION: 20150115
1713458	28/2015	Austria	⤷ Start Trial	PRODUCT NAME: OSPEMIFEN; REGISTRATION NO/DATE: EU/1/14/978/001-002 20150119
>Patent Number	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration	>SPC Description

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