Last Updated: September 25, 2026

FEMPATCH Drug Patent Profile


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Which patents cover Fempatch, and what generic alternatives are available?

Fempatch is a drug marketed by Parke Davis and is included in one NDA.

The generic ingredient in FEMPATCH is estradiol. There is one drug master file entry for this compound. Forty-seven suppliers are listed for this compound. Additional details are available on the estradiol profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Fempatch

A generic version of FEMPATCH was approved as estradiol by BARR LABS INC on October 22nd, 1997.

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Summary for FEMPATCH
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 4,086
DailyMed Link:FEMPATCH at DailyMed

US Patents and Regulatory Information for FEMPATCH

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Parke Davis FEMPATCH estradiol FILM, EXTENDED RELEASE;TRANSDERMAL 020417-001 Dec 3, 1996 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 FEMPATCH

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Parke Davis FEMPATCH estradiol FILM, EXTENDED RELEASE;TRANSDERMAL 020417-001 Dec 3, 1996 4,906,463 ⤷  Start Trial
Parke Davis FEMPATCH estradiol FILM, EXTENDED RELEASE;TRANSDERMAL 020417-001 Dec 3, 1996 5,006,342 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

Supplementary Protection Certificates for FEMPATCH

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0136011 C00136011/03 Switzerland ⤷  Start Trial PRODUCT NMAE: ESTRADIOL UND MEDROXYPROGESTERONACETAT; REGISTRATION NO/DATE: IKS 55288 20000417
0136011 2000C/027 Belgium ⤷  Start Trial PRODUCT NAME: ETHINYLESTRADIOLUM / NORETHISTERONI ACETAS; NAT. REGISTRATION NO/DATE: 19 IS 106 F3 20000911; FIRST REGISTRATION: NL RVG 23909 19991124
0136011 99C0003 Belgium ⤷  Start Trial PRODUCT NAME: ESTRADIOL AND NORETHISTERONE; FIRST REGISTRATION NO/DATE: 403 IS 106 F3 19980928; FIRST REGISTRATION: SE 14007 19980306
0584952 99C0004 Belgium ⤷  Start Trial PRODUCT NAME: ESTRADIOL, HEMIHYDRATE, NORETHISTERONE, ACETATE; NAT. REGISTRATION NO/DATE: NL 23753 19981210; FIRST REGISTRATION: SE - 14 007 19980306
0398460 SPC/GB04/032 United Kingdom ⤷  Start Trial PRODUCT NAME: ESTRADIOL, OPTIONALLY IN THE FORM OF A HYDRATE, TOGETHER WITH DROSPIRENONE; REGISTERED: NL RVG 27505 20021211; UK PL 00053/0341 20040310
0398460 04C0022 France ⤷  Start Trial PRODUCT NAME: ESTRADIOL ANHYDRE DROSPIRENONE; REGISTRATION NO/DATE IN FRANCE: NL 28661 DU 20040316; REGISTRATION NO/DATE AT EEC: RVG 27505 DU 20021211
0398460 C300221 Netherlands ⤷  Start Trial PRODUCT NAME: DROSPIRENON EN ETHINYLESTRADIOL; REGISTRATION NO/DATE: RVG 23827 20000307
>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.