FEMSTAT Drug Patent Profile

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Which patents cover Femstat, and when can generic versions of Femstat launch?

Femstat is a drug marketed by Roche Palo and Bayer and is included in three NDAs.

The generic ingredient in FEMSTAT is butoconazole nitrate. There are six drug master file entries for this compound. One supplier is listed for this compound. Additional details are available on the butoconazole nitrate profile page.

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Summary for FEMSTAT

US Patents:	0
Applicants:	2
NDAs:	3
Raw Ingredient (Bulk) Api Vendors:	105
Patent Applications:	1,009
DailyMed Link:	FEMSTAT at DailyMed

Drug patent expirations by year for FEMSTAT

US Patents and Regulatory Information for FEMSTAT

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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
Roche Palo	FEMSTAT	butoconazole nitrate	CREAM;VAGINAL	019215-001	Nov 25, 1985		DISCN	No	No	⤷ Sign Up	⤷ Sign Up				⤷ Sign Up
Roche Palo	FEMSTAT	butoconazole nitrate	SUPPOSITORY;VAGINAL	019359-001	Nov 25, 1985		DISCN	No	No	⤷ Sign Up	⤷ Sign Up				⤷ Sign Up
Bayer	FEMSTAT 3	butoconazole nitrate	CREAM;VAGINAL	020421-001	Dec 21, 1995		DISCN	Yes	No	⤷ Sign Up	⤷ Sign Up				⤷ Sign Up
>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 FEMSTAT

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Roche Palo	FEMSTAT	butoconazole nitrate	CREAM;VAGINAL	019215-001	Nov 25, 1985	⤷ Sign Up	⤷ Sign Up
Roche Palo	FEMSTAT	butoconazole nitrate	SUPPOSITORY;VAGINAL	019359-001	Nov 25, 1985	⤷ Sign Up	⤷ Sign Up
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>Patent No.	>Patent Expiration

International Patents for FEMSTAT

See the table below for patents covering FEMSTAT around the world.

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Country	Patent Number	Title	Estimated Expiration
Germany	2800755		⤷ Sign Up
Netherlands	184160		⤷ Sign Up
Sweden	7800111		⤷ Sign Up
Norway	760783		⤷ Sign Up
Netherlands	7608297		⤷ Sign Up
Switzerland	623040	Process for the preparation of substituted N-alkylimidazoles	⤷ Sign Up
>Country	>Patent Number	>Title	>Estimated Expiration

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Summary for FEMSTAT

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