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Details for Patent: 6,423,342

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Patent 6,423,342 protects ZELAPAR and is included in one NDA.

This patent has twelve patent family members in twelve countries.

Summary for Patent: 6,423,342

Title: Process for the preparation of a solid pharmaceutical dosage form
Abstract:A process for the preparation of a solid pharmaceutical dosage form comprising a carrier and, as active ingredient, a compound which exists, in solution, in an equilibrium between a free acid or free base form and a salt form, and for which there is a difference in volatility between the free acid or free base form and the salt form. The process includes the steps of solidifying a mixture of the compound and carrier in a solvent, and subsequently removing the solvent from the solidified mixture. A pH modifier is added to the mixture prior to solidification to shift the equilibrium to favor the less volatile form of the active ingredient.
Inventor(s): Jordan; Andrew William (Swindon, GB), Saunders; Joy Elaine (Faringdon, GB), Kearney; Patrick (Swindon, GB)
Assignee: R. P. Scherer Corporation (St. Petersburg, FL)
Application Number:09/305,080
Patent Claim Types:
see list of patent claims
Composition; Compound; Dosage form; Process;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 10th 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
Valeant Pharm Intl
ZELAPAR
selegiline hydrochloride
TABLET, ORALLY DISINTEGRATING;ORAL021479-001Jun 14, 2006RXYes6,423,342► subscribeY
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Foreign Priority and PCT Information for Patent: 6,423,342

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9504201Mar 02, 1995

International Patent Family for Patent: 6,423,342

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria203397► subscribe
Australia4884596► subscribe
Germany69614096► 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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