Last Updated: November 8, 2026

Details for Patent: 7,988,998

Name: Drug Patent Intelligence for US Patent 7988998
Creator: DrugPatentWatch
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Summary for Patent: 7,988,998

Title:	Sustained-release tramadol formulations with 24-hour efficacy
Abstract:	A sustained-release tramadol formulation oral administration is provided which, upon initial administration of one dose, provides an analgesic effect within 2 hours, which analgesic effect continues for at least 24 hours after administration.
Inventor(s):	Vincent Lenaerts, Patricia Laure Ouadji-Nijki, Jonathan Bacon, Rachid Ouzérourou, Sonia Gervais, Miloud Rahmouni, Damon Smith
Assignee:	Labopharm Barbados Ltd , Endo Ventures Unlimited Co F/k/a Endo Ventures Ltd , Endo Operations Ltd
Application Number:	US11/112,008
Patent Claim Types: see list of patent claims	Composition; Formulation; Compound; Device; Dosage form;

Drugs Protected by US Patent 7,988,998

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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 7,988,998

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	045972	⤷ Start Trial
Argentina	045973	⤷ Start Trial
Austria	390128	⤷ Start Trial
Austria	400819	⤷ Start Trial
Australia	2003275854	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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