Last Updated: November 9, 2026

Details for Patent: 11,590,228

Name: Drug Patent Intelligence for US Patent 11590228
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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Which drugs does patent 11,590,228 protect, and when does it expire?

Patent 11,590,228 protects DYANAVEL XR and is included in one NDA.

Summary for Patent: 11,590,228

Title:	Extended release amphetamine compositions
Abstract:	An oral amphetamine extended release liquid suspension is described. The compositions contain a combination of an uncoated amphetamine-cation exchange resin complex, a barrier coated amphetamine-cation exchange resin complex-matrix, and an uncomplexed amphetamine, wherein one or more of these components contains blends of different forms of amphetamines. Either the modified release coated and/or the uncoated amphetamine-cation exchange resin complex may have two forms of amphetamine in a complex with a single cation exchange resin. Following administration of a single dose of the composition, a therapeutically effective amount of amphetamine is reached by about one hour and the composition provides at least a thirteen hour effect post-dose.
Inventor(s):	Ketan Mehta, Kalyan Kathala, Yu-Hsing Tu
Assignee:	PROVIDENT BANK
Application Number:	US16/376,638
Patent Claim Types: see list of patent claims	Use; Delivery;

Drugs Protected by US Patent 11,590,228

Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
Tris Pharma Inc	DYANAVEL XR	amphetamine; amphetamine aspartate/dextroamphetamine sulfate	SUSPENSION, EXTENDED RELEASE;ORAL	208147-001	Oct 19, 2015		RX	Yes	Yes	11,590,228	⤷ Start Trial	Y			METHOD OF TREATING ATTENTION DEFICIT HYPERACTIVITY DISORDER	⤷ Start Trial
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

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