Last Updated: August 9, 2026

Details for Patent: 9,198,858


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Which drugs does patent 9,198,858 protect, and when does it expire?

Patent 9,198,858 protects NUVESSA and is included in one NDA.

This patent has fifteen patent family members in eight countries.

Summary for Patent: 9,198,858
Title:Methods of treating bacterial vaginosis with aqueous-based metronidazole gel formulations
Abstract:The present disclosure provides mucoadhesive aqueous-based gel formulations of metronidazole useful for a variety of purposes, including intravaginal application as a therapeutic approach towards the treatment of individuals suffering from and/or diagnosed with bacterial vaginosis.
Inventor(s):Michael T. Nordsiek, Kodumudi S. Balaji
Assignee: Chemo Research SL , Allergan Finance LLC
Application Number:US13/593,386
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,198,858
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

error: insufficient information

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Drugs Protected by US Patent 9,198,858

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Alembic Therap NUVESSA metronidazole GEL;VAGINAL 205223-001 Mar 24, 2014 RX Yes Yes 9,198,858 ⤷  Start Trial TREATMENT OF BACTERIAL VAGINOSIS WITH METRONIDAZOLE GEL ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 9,198,858

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2012275292 ⤷  Start Trial
Australia 2016200825 ⤷  Start Trial
Brazil 112013033759 ⤷  Start Trial
Canada 2840571 ⤷  Start Trial
Canada 3054236 ⤷  Start Trial
China 103763925 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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