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Last Updated: March 28, 2024

DUAC Drug Patent Profile


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

Duac is a drug marketed by Stiefel and is included in one NDA.

The generic ingredient in DUAC is benzoyl peroxide; clindamycin phosphate. There are seventeen drug master file entries for this compound. Fourteen suppliers are listed for this compound. Additional details are available on the benzoyl peroxide; clindamycin phosphate profile page.

Paragraph IV (Patent) Challenges for DUAC
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
DUAC Gel benzoyl peroxide; clindamycin phosphate 1% / 5% 050741 1 2008-12-11

US Patents and Regulatory Information for DUAC

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Stiefel DUAC benzoyl peroxide; clindamycin phosphate GEL;TOPICAL 050741-001 Aug 26, 2002 AB RX Yes No ⤷  Try a Trial ⤷  Try a Trial ⤷  Try a 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 DUAC

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

Country Patent Number Title Estimated Expiration
Canada 2142530 COMPOSITIONS TOPIQUES CONTENANT DU PEROXYDE DE BENZOYLE ET DE LA CLINDAMYCINE, ET METHODE D'UTILISATION (TOPICAL COMPOSITIONS CONTAINING BENZOYL PEROXIDE AND CLINDAMYCIN AND METHOD OF USE THEREOF) ⤷  Try a Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for DUAC

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1667986 92172 Luxembourg ⤷  Try a Trial PRODUCT NAME: SOLVAT ACETONIQUE DU CABAZITAXEL, OU DESIGNE SOLVAT ACETONIQUE DU DIMETHOXY DOCETAXEL OU SOLVAT ACETONIQUE DU (2R,3S)-3-TERT-BUTOXYCARBONYLAMINO-2-HYDROXY-3-PHENYLPROPIONATE DE 4-ACETOXY-2A-BENZOYLOXY-5BETA,20-EPOXY-1-HYDROXY-7BETA,10A-DIMETHOXY-9-OXO-TAX-11-ENE-13A-YLE(ACETONATE DU CABAZITAXEL)
1458369 C01458369/01 Switzerland ⤷  Try a Trial PRODUCT NAME: ADAPALENUM + BENZOYLIS PEROXIDUM; REGISTRATION NUMBER/DATE: SWISSMEDIC 58460 19.05.2009
1458369 SPC/GB10/005 United Kingdom ⤷  Try a Trial PRODUCT NAME: ADAPALENE AND BENZOYL PEROXIDE; REGISTERED: DK 40440 20071218; UK PL10590/0057 20091111
0591275 SPC/GB05/030 United Kingdom ⤷  Try a Trial PRODUCT NAME: NITISINONE (2-(2-NITRO-4-TRIFLUOROMETHYLBENZOYL)-1,3-CYCLOHEXANEDIONE) OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF; REGISTERED: UK EU/1/04/303/001 20050221; UK EU/1/04/303/002 20050221; UK EU/1/04/303/003 20050221
0186118 SPC/GB05/029 United Kingdom ⤷  Try a Trial PRODUCT NAME: MESOTRIONE (2-(4-METHYLSULPHONYL-2-NITROBENZOYL)-1,3CYCLOHEXANEDIONE); REGISTERED: AU 2726 20001016; UK 0309 OF 2005 20050218
0137963 97C0042 Belgium ⤷  Try a Trial PRODUCT NAME: 2-(2-BENZOYL-SUBSTITUE)-1,3-CYCLOHEXANE-DIONES; REGISTRATION NO/DATE: 8452/B 19930121
1586316 SPC/GB11/054 United Kingdom ⤷  Try a Trial PRODUCT NAME: BROMFENAC 2-AMINO-3-(4-BROMOBENZOYL)PHENYLACETIC ACID OR A PHARMACOLOGICALLY ACCEPTABLE SALT THEREOF OR A HYDRATE THEREOF; REGISTERED: UK EU/1/11/692/001 20110523
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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