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Last Updated: September 24, 2020

DrugPatentWatch Database Preview

Details for Patent: 9,144,547

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Summary for Patent: 9,144,547
Title:Oral dosage form for controlled drug release
Abstract: An oral dosage form comprising, (i) an erodable core, which core comprises a pharmaceutically active weak base or a pharmaceutically acceptable salt or solvate thereof; and (ii) an erodable coating surrounding said core, which coating comprises one or more openings extending substantially completely through said coating but not penetrating said core and communicating from the environment of use to said core; characterized in that release of the pharmaceutically active weak base or a pharmaceutically acceptable salt or solvate thereof from the dosage form occurs through the said opening(s) by the erosion of said erodable core and through erosion of said erodable coating under pre-determined pH conditions; a process for preparing such a dosage form and the use of such a dosage form in medicine.
Inventor(s): Li; Chi Leung (Harlow, GB), Martini; Luigi (Harlow, GB), Re; Vincenzo (Harlow, GB), Willy; Helen Anne (Harlow, GB)
Assignee: Glaxo Group Limited (Brentford, Middlesex, GB)
Application Number:12/966,323
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,144,547
Patent Claim Types:
see list of patent claims
Compound; Dosage form; Process;

Drugs Protected by US Patent 9,144,547

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Glaxosmithkline Llc LAMICTAL XR lamotrigine TABLET, EXTENDED RELEASE;ORAL 022115-001 May 29, 2009 AB RX Yes No   Start Trial   Start Trial Y   Start Trial
Glaxosmithkline Llc LAMICTAL XR lamotrigine TABLET, EXTENDED RELEASE;ORAL 022115-002 May 29, 2009 AB RX Yes Yes   Start Trial   Start Trial Y   Start Trial
Glaxosmithkline Llc LAMICTAL XR lamotrigine TABLET, EXTENDED RELEASE;ORAL 022115-003 May 29, 2009 AB RX Yes No   Start Trial   Start Trial Y   Start Trial
Glaxosmithkline Llc LAMICTAL XR lamotrigine TABLET, EXTENDED RELEASE;ORAL 022115-004 May 29, 2009 AB RX Yes Yes   Start Trial   Start Trial Y   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

Foreign Priority and PCT Information for Patent: 9,144,547

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom0203296.9Feb 12, 2002
United Kingdom0203297.7Feb 12, 2002
United Kingdom0203298.5Feb 12, 2002

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