Last Updated: September 24, 2026

Details for Patent: 8,840,928

Name: Drug Patent Intelligence for US Patent 8840928
Creator: DrugPatentWatch
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Summary for Patent: 8,840,928

Title:	Tamper-resistant pharmaceutical compositions of opioids and other drugs
Abstract:	Tamper-resistant pharmaceutical compositions have been developed to reduce the likelihood of improper administration of drugs, especially drugs such as opioids. The tamper-resistant compositions retard the release of drug, even if the physical integrity of the formulation is compromised (for example, by chopping with a blade or crushing) and the resulting material is placed in water, snorted, or swallowed. However, when administered as directed, the drug is slowly released from the composition as the composition is passes through the GI tract.
Inventor(s):	Roman V. Rariy, Alison B. Fleming, Jane C. Hirsh, Said Saim, Ravi K. Varanasi
Assignee:	Collegium Pharmaceutical Inc
Application Number:	US12/965,572
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for patent 8,840,928
Patent Claim Types: see list of patent claims	Use; Composition; Dosage form;

Drugs Protected by US Patent 8,840,928

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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
>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 8,840,928

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Australia	2003247876	⤷ Start Trial
Canada	2491572	⤷ Start Trial
Canada	2569958	⤷ Start Trial
Canada	2916869	⤷ Start Trial
Cyprus	1119831	⤷ Start Trial
Denmark	1765292	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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