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Details for Patent: 5,840,763

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Patent 5,840,763 protects DENAVIR and FAMVIR and is included in two NDAs. There has been one Paragraph IV challenge on Famvir.

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

This patent has thirty-eight patent family members in twenty-eight countries.

Summary for Patent: 5,840,763

Title: Treatment of a latent infection of herpes viruses
Abstract:A method for the treatment of latent infection of herpesviruses in mammals, including humans, which method comprises administering to the mammal in need of such treatment, an effective amount of a compound of formula (A): ##STR1## or a bioprecursor, or a pharmaceutically acceptable salt, phosphate ester and/or acyl derivative of either of the foregoing.
Inventor(s): Field; Hugh John (Cambridge, GB2), Thackray; Alana Maureen (Cambridge, GB2), Bacon; Teresa Helen (Weybridge, GB2), Sutton; David (Wayne, PA), Vere Hodge; Richard Anthony (Reigate, GB2)
Assignee: SmithKline Beecham plc (Brentford, GB)
Application Number:08/522,790
Patent Claim Types:
see list of patent claims
Use;

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Denco Asset
DENAVIR
penciclovir
CREAM;TOPICAL020629-001Sep 24, 1996RXYes5,840,763► subscribe TREATMENT OF RECURRENT HERPES LABIALIS (COLD SORES) IN ADULTS
Novartis
FAMVIR
famciclovir
TABLET;ORAL020363-003Dec 11, 1995RXNo5,840,763*PED► subscribeY
Novartis
FAMVIR
famciclovir
TABLET;ORAL020363-001Apr 26, 1996RXNo5,840,763*PED► subscribeY
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Non-Orange Book Patents for Patent: 5,840,763

For Orange Book-listed patents (shown in the main table above) generic applications must certify that the listed patents are expired, invalid, or will not be infringed by generic entry.

The non-Orange Book patents listed below do not require formal certifications, so they do not automatically impede generic entry. Instead, they represent potential opportunities for branded firms to block generic entry through patent infringment challenges.

Patent No. Title Estimated Patent Expiration
5,916,893 Treatment of a latent infection of herpes virus► subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Because of the complexity of determining patent expiration dates it is advisable to have patent counsel verify freedom to operate.

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International Patent Family for Patent: 5,840,763

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO)669► subscribe
African Regional IP Organization (ARIPO)9701001► subscribe
Austria208198► 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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