Last Updated: August 3, 2026

MENTAX Drug Patent Profile


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When do Mentax patents expire, and when can generic versions of Mentax launch?

Mentax is a drug marketed by Pharmobedient and is included in two NDAs.

The generic ingredient in MENTAX is butenafine hydrochloride. There are two drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the butenafine hydrochloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Mentax

A generic version of MENTAX was approved as butenafine hydrochloride by SUN PHARMA CANADA on November 16th, 2017.

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Summary for MENTAX
US Patents:0
Applicants:1
NDAs:2

US Patents and Regulatory Information for MENTAX

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Pharmobedient MENTAX butenafine hydrochloride CREAM;TOPICAL 020524-001 Oct 18, 1996 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Pharmobedient MENTAX-TC butenafine hydrochloride CREAM;TOPICAL 021408-001 Oct 17, 2002 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

International Patents for MENTAX

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

Country Patent Number Title Estimated Expiration
Austria 58126 ⤷  Start Trial
Canada 1334973 DERIVES AMINE, PROCEDES POUR LEUR PREPARATION ET FONGICIDES EN CONTENANT (AMINE DERIVATIVES, PROCESSES FOR PREPARING THE SAME AND FUNGICIDES CONTAINING THE SAME) ⤷  Start Trial
China 1007975 ⤷  Start Trial
China 85104330 ⤷  Start Trial
Germany 10399014 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for MENTAX

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0164697 91031 Luxembourg ⤷  Start Trial 91031, EXPIRES: 20100606
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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