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Details for Patent: 7,976,870

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Patent 7,976,870 protects XARTEMIS XR and is included in one NDA. There has been one Paragraph IV challenge on Xartemis XR.

This patent has six patent family members in six countries.

Summary for Patent: 7,976,870

Title:Gastric retentive oral dosage form with restricted drug release in the lower gastrointestinal tract
Abstract: Controlled release oral dosage forms are provided for the continuous, sustained administration of a pharmacologically active agent to the upper gastrointestinal tract of a patient in whom the fed mode as been induced. The majority of the agent is delivered, on an extended release basis, to the stomach, duodenum and upper regions of the small intestine, with drug delivery in the lower gastrointestinal tract and colon substantially restricted. The dosage form comprises a matrix of a biocompatible, hydrophilic, erodible polymer with an active agent incorporated therein, wherein the polymer is one that both swells in the presence of water and gradually erodes over a time period of hours, with swelling and erosion commencing upon contact with gastric fluid, and drug release rate primarily controlled by erosion rate.
Inventor(s): Berner; Bret (Half Moon Bay, CA), Louie-Helm; Jenny (Fremont, CA), Shell; John W. (Hillsborough, CA)
Assignee: Depomed, Inc. (Menlo Park, CA)
Application Number:10/769,574
Patent Claim Types:
see list of patent claims
Use; Dosage form; Delivery; Formulation;
Patent Metrics:
Source: PatentQuant.com
Field: Pharmaceuticals
Back Citations: 75th percentile
Forward Citations: 16th percentile

Applicant Tradename Generic Name Dosage NDA Approval Date Type RLD Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use
Mallinckrodt Inc
XARTEMIS XR
acetaminophen; oxycodone hydrochloride
TABLET, EXTENDED RELEASE;ORAL204031-001Mar 11, 2014RXYes7,976,870► subscribe METHOD OF TREATING PATIENTS WITH GASTRIC RETENTIVE DOSAGE FORM
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International Patent Family for Patent: 7,976,870

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
TaiwanI324075► subscribe
MexicoPA04003930► subscribe
Japan2005507000► 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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