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Last Updated: October 21, 2019

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Details for Patent: 8,288,434

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Summary for Patent: 8,288,434
Title:Topical pharmaceutical formulations containing a low concentration of benzoyl peroxide in suspension in water and a water-miscible organic solvent
Abstract: An aqueous formulation for topical application to the skin comprising water, a water-miscible organic solvent, and benzoyl peroxide, wherein the concentration of the organic solvent is sufficient to provide a stable suspension of benzoyl peroxide in the aqueous formulation without the inclusion of a surfactant in the formulation, wherein the ratio of concentrations of water and organic solvent in the formulation is sufficient to maintain the benzoyl peroxide in saturated solubility in the formulation following application to the skin, and wherein the concentration of benzoyl peroxide in the formulation is less than 5.0% and at least 1.0% w/w. The formulation may further contain a chemical compound in addition to benzoyl peroxide that is effective in the treatment of acne. The aqueous formulations of the invention are useful in the treatment of acne and acne rosacea.
Inventor(s): Chang; Yunik (Sonoma, CA), Dow; Gordon J. (Santa Rosa, CA)
Assignee: Dow Pharmaceutical Sciences, Inc. (Petaluma, CA)
Application Number:12/455,525
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,288,434
Patent Claim Types:
see list of patent claims
Formulation; Use; Compound;

Drugs Protected by US Patent 8,288,434

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bausch ACANYA benzoyl peroxide; clindamycin phosphate GEL;TOPICAL 050819-001 Oct 23, 2008 AB RX Yes Yes   Start Trial   Start Trial Y TREATMENT OF ACNE   Start Trial
Bausch ONEXTON benzoyl peroxide; clindamycin phosphate GEL;TOPICAL 050819-002 Nov 24, 2014 RX Yes Yes   Start Trial   Start Trial Y TOPICAL TREATMENT OF ACNE VULGARIS   Start Trial
Bausch ONEXTON benzoyl peroxide; clindamycin phosphate GEL;TOPICAL 050819-002 Nov 24, 2014 RX Yes Yes   Start Trial   Start Trial Y TOPICAL TREATMENT OF ACNE VULGARIS IN PATIENTS 12 YEARS OR OLDER   Start Trial
Bausch ONEXTON benzoyl peroxide; clindamycin phosphate GEL;TOPICAL 050819-002 Nov 24, 2014 RX Yes Yes   Start Trial   Start Trial Y TREATMENT OF ACNE   Start Trial
Bausch ONEXTON benzoyl peroxide; clindamycin phosphate GEL;TOPICAL 050819-002 Nov 24, 2014 RX Yes Yes   Start Trial   Start Trial Y TREATMENT OF ACNE VULGARIS   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 8,288,434

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2009255679   Start Trial
Brazil PI0913326   Start Trial
Canada 2723029   Start Trial
China 102056481   Start Trial
European Patent Office 2299810   Start Trial
Japan 2011522820   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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