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Details for Patent: 6,395,304

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Patent 6,395,304 protects VIVITROL and is included in one NDA.

This patent has twenty patent family members in ten countries.

Summary for Patent: 6,395,304

Title: Apparatus and method for preparing microparticles
Abstract:Apparatus and method for preparing microparticles. An emulsion is formed by combining two phases in a static mixing assembly. The static mixing assembly preferably includes a preblending static mixer and a manifold. The emulsion flows out of the static mixing assembly into a quench liquid whereby droplets of the emulsion form microparticles. The residence time of the emulsion in the static mixing assembly is controlled to obtain a predetermined particle size distribution of the resulting microparticles.
Inventor(s): Lyons; Shawn L. (Cincinnati, OH), Wright; Steven G. (Madeira, OH)
Assignee: Alkermes Controlled Therapeutics Inc. II (Cambridge, MA)
Application Number:09/828,849
Patent Claim Types:
see list of patent claims
Use; Formulation;

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Alkermes
VIVITROL
naltrexone
FOR SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR021897-001Apr 13, 2006RXYes6,395,304► subscribeY
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Non-Orange Book Patents for Patent: 6,395,304

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
7,510,730Apparatus and method for preparing microparticles using in-line solvent extraction► subscribe
6,713,090 Apparatus and method for preparing microparticles► subscribe
6,331,317 Apparatus and method for preparing microparticles► 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: 6,395,304

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria286722► subscribe
Austria349201► subscribe
Australia2750801► 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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