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Details for Patent: 5,980,882

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Patent 5,980,882 protects DELSYM and is included in one NDA. There has been one Paragraph IV challenge on Delsym.

This patent has two patent family members in two countries.

Summary for Patent: 5,980,882

Title: Drug-resin complexes stabilized by chelating agents
Abstract:The invention provides a pharmaceutical composition comprising a drug-resin complex and a chelating agent in which the composition is in the form of a solid or a gel. The invention also provides a method of making such a composition and a method for improving the stability of a pharmaceutical composition.
Inventor(s): Eichman; Martin L. (Fairport, NY)
Assignee: Medeva Pharmaceuticals Manufacturing (Rochester, NY)
Application Number:08/834,359
Patent Claim Types:
see list of patent claims
Composition; Dosage form; Use; Process;
Patent Metrics:
Source: PatentQuant.com
Field: Not categorized
Back Citations: 56th percentile
Forward Citations: 8th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Reckitt Benckiser
DELSYM
dextromethorphan polistirex
SUSPENSION, EXTENDED RELEASE;ORAL018658-001Oct 8, 1982OTCYes5,980,882► subscribeY
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International Patent Family for Patent: 5,980,882

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office0911039► subscribe
Canada2234282► 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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