Last Updated: August 8, 2026

Details for Patent: 9,724,343

Name: Drug Patent Intelligence for US Patent 9724343
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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Which drugs does patent 9,724,343 protect, and when does it expire?

Patent 9,724,343 protects RELISTOR and is included in one NDA.

This patent has thirty-eight patent family members in eighteen countries.

Summary for Patent: 9,724,343

Title:	Peripheral opioid receptor antagonists and uses thereof
Abstract:	The present invention provides a compound of formua I: wherein X−, R1, and R2 are as defined herein, and compositions thereof.
Inventor(s):	Nataliya BAZHINA, George Joseph Donato, III, Steven R. Fabian, John Lokhnauth, Sreenivasulu Megati, Charles Melucci, Christian Ofslager, Niketa Patel, Galen Radebaugh, Syed M. Shah, Jan Szeliga, Huyi Zhang, Tianmin Zhu
Assignee:	Wyeth LLC
Application Number:	US15/276,347
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 9,724,343
Patent Claim Types: see list of patent claims	Use; Composition; Dosage form;

Drugs Protected by US Patent 9,724,343

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
Salix	RELISTOR	methylnaltrexone bromide	TABLET;ORAL	208271-001	Jul 19, 2016		RX	Yes	Yes	9,724,343	⤷ Start Trial	Y			TREATMENT OF OPIOID-INDUCED CONSTIPATION	⤷ 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

International Family Members for US Patent 9,724,343

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	073520	⤷ Start Trial
Australia	2009298500	⤷ Start Trial
Brazil	122020013665	⤷ Start Trial
Brazil	PI0919539	⤷ Start Trial
Canada	2676881	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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