You’re using a public version of DrugPatentWatch with 5 free searches available | Register to unlock more free searches. CREATE FREE ACCOUNT

Last Updated: June 23, 2024

ESTRING Drug Patent Profile


✉ Email this page to a colleague

« Back to Dashboard


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

Estring is a drug marketed by Pfizer and is included in one NDA.

The generic ingredient in ESTRING is estradiol. There are seventy-five drug master file entries 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 Estring

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

  Sign Up

Drug patent expirations by year for ESTRING
Drug Prices for ESTRING

See drug prices for ESTRING

Drug Sales Revenue Trends for ESTRING

See drug sales revenues for ESTRING

Recent Clinical Trials for ESTRING

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

SponsorPhase
Boston Urogynecology AssociatesPhase 4
Mount Auburn HospitalPhase 4
Beth Israel Deaconess Medical CenterPhase 4

See all ESTRING clinical trials

Pharmacology for ESTRING
Drug ClassEstrogen
Mechanism of ActionEstrogen Receptor Agonists

US Patents and Regulatory Information for ESTRING

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Pfizer ESTRING estradiol INSERT, EXTENDED RELEASE;VAGINAL 020472-001 Apr 26, 1996 RX Yes Yes ⤷  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

Supplementary Protection Certificates for ESTRING

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0398460 C300221 Netherlands ⤷  Sign Up PRODUCT NAME: DROSPIRENON EN ETHINYLESTRADIOL; REGISTRATION NO/DATE: RVG 23827 20000307
1380301 CA 2009 00017 Denmark ⤷  Sign Up PRODUCT NAME: ETHINYLESTRADIOL (SOM BETADEXCLATHRAT) OG DROSPIRENON; NAT. REG. NO/DATE: 42417 (DK) 20080619; FIRST REG. NO/DATE: NL 33842 20070629
1214076 49/2008 Austria ⤷  Sign Up PRODUCT NAME: WIRKSTOFFKOMBINATION VON ETHINYLESTRADIOL UND DROSPIRENON; REGISTRATION NO/DATE: 1-27586 20080612
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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. 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.