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Details for Patent: 6,911,217

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Patent 6,911,217 protects DETROL LA and is included in one NDA. There has been one Paragraph IV challenge on Detrol LA. There are two tentative approvals for the compound protected by this patent. Additional details are available via the generic ingredient links below.

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

Summary for Patent: 6,911,217

Title: Controlled release bead, a method of producing the same and multiple unit formulation comprising it
Abstract:A controlled release bead comprises: (i) a core unit of a substantially water-soluble or water-swellable inert material; (ii) a first layer on the core unit of a substantially water-insoluble polymer; (iii) a second layer covering the first layer and containing an active ingredient; and (iv) a third layer of polymer on the second layer effective for controlled release of the active ingredient, wherein the first layer is adapted to control water penetration into the core. A method of producing the controlled release bead is also disclosed.
Inventor(s): Gren; Torkel (Kalamazoo, MI), Ringberg; Anders (Stockholm, SE), Wikberg; Martin (Kullavik, SE), Wald; Randy J. (Portage, MI)
Assignee: Pharmacia AB (Stockholm, SE)
Application Number:09/763,281
Patent Claim Types:
see list of patent claims
Compound; Composition; Formulation; Dosage form; Use;
Patent Metrics:
Source: PatentQuant.com
Field: Not categorized
Back Citations: 9th percentile
Forward Citations: 1st percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Pharmacia And Upjohn
tolterodine tartrate
CAPSULE, EXTENDED RELEASE;ORAL021228-001Dec 22, 2000RXNo6,911,217*PEDMay 11, 2020Y
Pharmacia And Upjohn
tolterodine tartrate
CAPSULE, EXTENDED RELEASE;ORAL021228-002Dec 22, 2000RXYes6,911,217*PEDMay 11, 2020Y
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Foreign Priority and PCT Information for Patent: 6,911,217

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
PCT/SE99/01463Aug 26, 1999
PCT Information
PCT FiledNovember 11, 1999PCT Application Number:PCT/SE99/02052
PCT Publication Date:May 18, 2000PCT Publication Number: WO00/27364

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