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Details for Patent: 8,216,289

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Patent 8,216,289 protects LEVULAN and is included in one NDA.

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

Summary for Patent: 8,216,289

Title:Illuminator for photodynamic therapy
Abstract: An apparatus and method for photodynamic therapy or photodynamic diagnosis using an illuminator comprising a plurality of light sources generally conforming to a contoured surface and irradiating the contoured surface with substantially uniform intensity visible light. The light sources may comprise generally U-shaped fluorescent tubes that are driven by electronic ballasts. Adjustment of the ballast voltage controls the output power of the tubes. The tubes are supported by a sheet-metal or plastic housing and are covered by a polycarbonate shield which directs cooling airflow within the unit and prevents glass-patient contact in the vent of tube breakage. An aluminum reflector located behind the tubes increases both the output irradiance and the uniformity of the output distribution. The spacing of the U-shaped tubes is varied to increase the output at the edges of the illuminator to make the output more uniform. Also, different portions of the tubes are cooled at different amounts, to improve uniformity. A light sensor monitors output from the U-shaped tubes to provide a signal for adjusting the output from the tubes.
Inventor(s): Lundahl; Scott (Lexington, MA), Kozodoy; Rebecca (Randolph, MA), Carroll; Ronald (Hingham, MA), Leppelmeier; Elton (Highland Height, OH)
Assignee: Dusa Pharmaceuticals, Inc. (Wilmington, MA)
Application Number:12/969,999
Patent Claim Types:
see list of patent claims
Use;
Patent Metrics:
Source: PatentQuant.com
Field: Medical technology
Back Citations: 80th percentile
Forward Citations: 0th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Dusa
LEVULAN
aminolevulinic acid hydrochloride
SOLUTION;TOPICAL020965-001Dec 3, 1999RXYes8,216,289► subscribe TREATMENT OF NON-HYPERKERATOTIC ACTINIC KERATOSES OF FACE AND SCALP
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Non-Orange Book Patents for Patent: 8,216,289

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
8,758,418Illuminator for photodynamic therapy► subscribe
6,709,446 Illuminator for photodynamic therapy and diagnosis which produces substantially uniform intensity visible light► subscribe
7,190,109Illuminator for photodynamic therapy► 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: 8,216,289

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Turkey200003233► subscribe
Portugal1075315► subscribe
Poland192844► 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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