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Last Updated: March 28, 2024

Details for Patent: 6,419,958


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Summary for Patent: 6,419,958
Title: Extended release formulation of venlafaxine hydrochloride
Abstract:This invention relates to a 24 hour extended release dosage formulation and unit dosage form thereof of venlafaxine hydrochloride, an antidepressant, which provides better control of blood plasma levels than conventional tablet formulations which must be administered two or more times a day and further provides a lower incidence of nausea and vomiting than the conventional tablets. More particularly, the invention comprises an extended release formulation of venlafaxine hydrochloride comprising a therapeutically effective amount of venlafaxine hydrochloride in spheroids comprised of venlafaxine hydrochloride, microcrystalline cellulose and, optionally, hydroxypropylmethylcellulose coated with a mixture of ethyl cellulose and hydroxypropylmethylcellulose.
Inventor(s): Sherman; Deborah M. (Plattsburgh, NY), Clark; John C. (Peru, NY), Lamer; John U. (St. Albans, VT), White; Steven A. (Champlain, NY)
Assignee: Wyeth (Madison, NJ)
Application Number:09/884,412
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,419,958
Patent Claim Types:
see list of patent claims
Use; Formulation;

Drugs Protected by US Patent 6,419,958

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>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 6,419,958

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 006519 ⤷  Try a Trial
Argentina 014012 ⤷  Try a Trial
Austria 237320 ⤷  Try a Trial
Austria 257011 ⤷  Try a Trial
Australia 1300399 ⤷  Try a Trial
Australia 1640097 ⤷  Try a Trial
Australia 727653 ⤷  Try a Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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