Details for Patent: 6,322,819

Summary for Patent: 6,322,819

Title:	Oral pulsed dose drug delivery system
Abstract:	A multiple pulsed dose drug delivery system for pharmaceutically active amphetamine salts, comprising an immediate-release component and an enteric delayed-release component wherein (1) the enteric release coating has a defined minimum thickness and/or (2) there is a protective layer between the pharmaceutically active amphetamine salt and the enteric release coating and/or (3) there is a protective layer over the enteric release coating. The product can be composed of either one or a number of beads in a dosage form, including either capsule, tablet, or sachet method for administering the beads.
Inventor(s):	Burnside; Beth A. (Bethesda, MD), Guo; Xiaodi (Derwood, MD), Fiske; Kimberly (Bethesda, MD), Couch; Richard A. (Chevy Chase, MD), Treacy; Donald J. (Annapolis, MD), Chang; Rong-Kun (Hockessin, DE), McGuinness; Charlotte (Bethesda, MD), Rudnic; Edward M. (North Potomac, MD)
Assignee:	Shire Laboratories, Inc. (Rockville, MD)
Application Number:	09/176,542
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 6,322,819
Patent Claim Types: see list of patent claims	Composition; Delivery;

Drugs Protected by US Patent 6,322,819

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

International Family Members for US Patent 6,322,819

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	427101
Australia	1214500
Canada	2348090
Germany	69940673
European Patent Office	1123087