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Last Updated: December 6, 2019

DrugPatentWatch Database Preview

Details for Patent: 6,528,090

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Which drugs does patent 6,528,090 protect, and when does it expire?

Patent 6,528,090 protects DEPAKOTE ER and is included in one NDA.

Protection for DEPAKOTE ER has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has forty patent family members in twenty-seven countries.

Summary for Patent: 6,528,090
Title: Controlled release formulation of divalproex sodium
Abstract:A new oral polymeric controlled release formulation suitable for the once-a-day administration of valproate compounds, such as divalproex sodium, has been discovered. This formulation exhibits significant advantages over the sustained release valproate formulations of the prior art. This formulation minimizes the variation between peak and trough plasma levels of valproate over a 24 hour dosing period. This formulation follows a zero-order release pattern thus producing essentially flat plasma levels of valproate, once steady-state levels have been achieved. This results in a significantly lower incidence of side effects for patients consuming such a formulation.
Inventor(s): Qiu; Yihong (Gumee, IL), Bollinger; J. Daniel (Libertyville, IL), Cheskin; Howard S. (Glencoe, IL), Dutta; Sandeep (Waukegan, IL), Engh; Kevin R. (Kenosha, WI), Poska; Richard P. (Mundelein, IL)
Assignee: Abbott Laboratories (Abbott Park, IL)
Application Number:09/748,566
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 6,528,090
Patent Claim Types:
see list of patent claims
Formulation; Compound; Dosage form; Composition;

Drugs Protected by US Patent 6,528,090

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Abbvie DEPAKOTE ER divalproex sodium TABLET, EXTENDED RELEASE;ORAL 021168-002 May 31, 2002 AB RX Yes No   Start Trial   Start Trial   Start Trial
Abbvie DEPAKOTE ER divalproex sodium TABLET, EXTENDED RELEASE;ORAL 021168-001 Aug 4, 2000 AB RX Yes Yes   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. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 6,528,090

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 021443   Start Trial
Austria 254907   Start Trial
Austria 275398   Start Trial
Australia 2002239260   Start Trial
Australia 2478900   Start Trial
Bulgaria 105665   Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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Serving leading biopharmaceutical companies globally:

Johnson and Johnson
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