Last Updated: August 10, 2026

ROZEREM Drug Patent Profile


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When do Rozerem patents expire, and what generic alternatives are available?

Rozerem is a drug marketed by Takeda Pharms Usa and is included in one NDA.

The generic ingredient in ROZEREM is ramelteon. There are three drug master file entries for this compound. Twenty-eight suppliers are listed for this compound. Additional details are available on the ramelteon profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Rozerem

A generic version of ROZEREM was approved as ramelteon by DR REDDYS LABS SA on July 26th, 2013.

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Summary for ROZEREM
Recent Clinical Trials for ROZEREM

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
Overseas Pharmaceuticals, Ltd.PHASE1
Beijing CTSmed Co. LtdPHASE1
Brigham and Women's HospitalPhase 4

See all ROZEREM clinical trials

Pharmacology for ROZEREM
Paragraph IV (Patent) Challenges for ROZEREM
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
ROZEREM Tablets ramelteon 8 mg 021782 2 2009-07-22

US Patents and Regulatory Information for ROZEREM

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Takeda Pharms Usa ROZEREM ramelteon TABLET;ORAL 021782-001 Jul 22, 2005 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

International Patents for ROZEREM

See the table below for patents covering ROZEREM around the world.

Country Patent Number Title Estimated Expiration
Austria 469644 ⤷  Start Trial
Australia 1430502 ⤷  Start Trial
Canada 2428817 PREPARATION PHARMACEUTIQUE CONTENANT DE LA COPOLYVIDONE (COPOLYVIDONE-CONTAINING PREPARATION) ⤷  Start Trial
Canada 2650698 PREPARATION PHARMACEUTIQUE CONTENANT DE LA COPOLYVIDONE (COPOLYVIDONE-CONTAINING PREPARATION) ⤷  Start Trial
Germany 60142305 ⤷  Start Trial
European Patent Office 1334732 PREPARATION PHARMACEUTIQUE A BASE DE N-[2-(1,6,7,8-TETRAHYDRO-2H-INDENO[5,4 B]FURAN-8-YL)ETHYL]PROPIONAMIDE REVETUE D'UN ENROBAGE CONTENANT DE LA COPOLYVIDONE EN ABSENCE DE POLYETHYLENE GLYCOL (PHARMACEUTICAL PREPARATION OF N-[2-(1,6,7,8-TETRAHYDRO-2H-INDENO[5,4 B]FURAN-8-YL)ETHYL]PROPIONAMIDE COATED WITH A COPOLYVIDONE-CONTAINING COATING FREE OF POLYETHYLENE GLYCOL) ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

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