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Serving leading biopharmaceutical companies globally:

Colorcon
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Express Scripts
Mallinckrodt

Last Updated: November 30, 2021

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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. Sixteen 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 NDA Submissiondate
DUAC GEL;TOPICAL benzoyl peroxide; clindamycin phosphate 050741 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 ⤷  Free Forever Trial ⤷  Free Forever Trial ⤷  Free Forever Trial
>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 DUAC

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1667986 92172 Luxembourg ⤷  Free Forever 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 SPC/GB10/005 United Kingdom ⤷  Free Forever Trial PRODUCT NAME: ADAPALENE AND BENZOYL PEROXIDE; REGISTERED: DK 40440 20071218; UK PL10590/0057 20091111
0591275 SPC/GB05/030 United Kingdom ⤷  Free Forever 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
1458369 C01458369/01 Switzerland ⤷  Free Forever Trial PRODUCT NAME: ADAPALENUM + BENZOYLIS PEROXIDUM; REGISTRATION NUMBER/DATE: SWISSMEDIC 58460 19.05.2009
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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Serving leading biopharmaceutical companies globally:

McKesson
Mallinckrodt
AstraZeneca
Baxter
Moodys
Merck

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