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Details for Patent: 8,163,306

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Summary for Patent: 8,163,306

Title:Oral drug delivery system
Abstract: An oral drug delivery system comprising a coated tablet having one or more surfaces. The coated tablet further comprises a core and a coating surrounding the core. The core comprises an active ingredient composition comprising at least one active ingredient and a pharmaceutically acceptable excipient and a composition selected from a swellable composition and a reactive composition located in an immediate vicinity of one or more preselected surfaces. The coating is operable to be reliably removed fully from the one or more of the preselected surfaces of the tablet upon contact with an aqueous environment, but not removed from at least one of the surfaces.
Inventor(s): Dharmadhikari; Nitin Bhalachandra (Mumbai, IN), Zala; Yashoraj Rupsinh (Mumbai, IN), Singh; Amarjit (Mumbai, IN)
Assignee: Sun Pharma Advanced Research Company (Andheri (E), Mumbai, IN)
Application Number:10/572,502
Patent Claim Types:
see list of patent claims
Composition; Delivery; Dosage form;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 15th percentile
Forward Citations: 1st percentile

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Foreign Priority and PCT Information for Patent: 8,163,306

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
India987/MUM/2003Sep 19, 2003
PCT Information
PCT FiledJune 30, 2004PCT Application Number:PCT/IN2004/000192
PCT Publication Date:May 06, 2005PCT Publication Number: WO2005/039481

International Patent Family for Patent: 8,163,306

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO)200603602► subscribe
Austria551051► subscribe
Australia2004283565► 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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