Last Updated: November 8, 2026

Details for Patent: 11,458,091

Name: Drug Patent Intelligence for US Patent 11458091
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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Which drugs does patent 11,458,091 protect, and when does it expire?

Patent 11,458,091 protects OPVEE and is included in one NDA.

This patent has fourteen patent family members in eight countries.

Summary for Patent: 11,458,091

Title:	Compositions and methods for the treatment of opioid overdose
Abstract:	Drug products adapted for nasal delivery, comprising a pre-primed device filled with a pharmaceutical composition comprising nalmefene are provided. Methods of treating opioid overdose with the drug products are also provided.
Inventor(s):	Roger Crystal, Edward T. Maggio
Assignee:	Indivior Inc
Application Number:	US16/461,354
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 11,458,091
Patent Claim Types: see list of patent claims	Use; Composition; Formulation; Delivery; Device;

Drugs Protected by US Patent 11,458,091

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
Indivior	OPVEE	nalmefene hydrochloride	SPRAY;NASAL	217470-001	May 22, 2023		RX	Yes	Yes	11,458,091	⤷ Start Trial	Y			TREATING OPIOID OVERDOSE	⤷ 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 11,458,091

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Australia	2017360910	⤷ Start Trial
Australia	2024201047	⤷ Start Trial
Canada	3044221	⤷ Start Trial
China	110139651	⤷ Start Trial
European Patent Office	3541386	⤷ Start Trial
Israel	266674	⤷ Start Trial
Israel	312012	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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