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Details for Patent: 5,827,529

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Patent 5,827,529 protects LIDODERM and is included in one NDA. There has been one Paragraph IV challenge on Lidoderm.

This patent has eight patent family members in seven countries.

Summary for Patent: 5,827,529

Title: External preparation for application to the skin containing lidocaine
Abstract:An external preparation for application to the skin containing lidocaine which comprises a drug-retaining layer placed on a support, wherein said drug-retaining layer comprises an adhesive gel base and 1 to 10% by weight of lidocaine, said base comprising a water-soluble high molecular weight substance, water and a water-retaining agent, which can release the active lidocaine gradually and constantly so that lidocaine is transdermally absorbed for a long period of time.
Inventor(s): Ono; Masahiro (Kagawa-ken, JP), Akazawa; Mitsuji (Kagawa-ken, JP), Seki; Michiko (Kagawa-ken, JP), Iwamoto; Kiyomi (Kagawa-ken, JP), Konishi; Ryoji (Kagawa-ken, JP)
Assignee: Teikoku Seiyaku Kabushiki Kaisha (Kagawa-Ken, JP)
Application Number:08/258,378
Patent Claim Types:
see list of patent claims
Compound; Composition;

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Teikoku Pharma Usa
LIDODERM
lidocaine
PATCH;TOPICAL020612-001Mar 19, 1999RXYes5,827,529► subscribe EXTERNAL PREPARATION FOR APPLICATION TO THE SKIN CONTAINING LIDOCAINE-DRUG RETAINING LAYER PLACED ON SUPPORT AND COMPRISES ADHESIVE GEL BASE 1-10% BY WEIGHT OF LIDOCAINE
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Foreign Priority and PCT Information for Patent: 5,827,529

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan3-067353Mar 30, 1991

International Patent Family for Patent: 5,827,529

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria149351► subscribe
Canada2064325► subscribe
Germany69217685► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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