Last Updated: August 2, 2026

HALAVEN Drug Patent Profile


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

Halaven is a drug marketed by Eisai Inc and is included in one NDA. There is one patent protecting this drug and one Paragraph IV challenge.

This drug has thirty-eight patent family members in fourteen countries.

The generic ingredient in HALAVEN is eribulin mesylate. Sixteen suppliers are listed for this compound. Additional details are available on the eribulin mesylate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Halaven

A generic version of HALAVEN was approved as eribulin mesylate by GLAND on April 5th, 2024.

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Summary for HALAVEN
International Patents:38
US Patents:1
Applicants:1
NDAs:1
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for HALAVEN
Paragraph IV (Patent) Challenges for HALAVEN
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
HALAVEN Injection eribulin mesylate 1 mg/2 mL 201532 1 2019-12-20

US Patents and Regulatory Information for HALAVEN

HALAVEN is protected by one US patents and two FDA Regulatory Exclusivities.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Eisai Inc HALAVEN eribulin mesylate SOLUTION;INTRAVENOUS 201532-001 Nov 15, 2010 AP RX Yes Yes RE46965*PED ⤷  Start Trial Y ⤷  Start Trial
Eisai Inc HALAVEN eribulin mesylate SOLUTION;INTRAVENOUS 201532-001 Nov 15, 2010 AP RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Eisai Inc HALAVEN eribulin mesylate SOLUTION;INTRAVENOUS 201532-001 Nov 15, 2010 AP 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 HALAVEN

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

Country Patent Number Title Estimated Expiration
Austria 502932 ⤷  Start Trial
Australia 2003284242 METHODS AND COMPOSITIONS FOR USE IN TREATING CANCER ⤷  Start Trial
Australia 4573999 Macrocyclic analogs and methods of their use and preparation ⤷  Start Trial
Australia 762998 ⤷  Start Trial
Brazil 9911326 Análogos macrocìclicos e métodos para seu uso e preparação ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for HALAVEN

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1087960 91854 Luxembourg ⤷  Start Trial PRODUCT NAME: ERIBULIN ET SES DERIVES PHARMACEUTIQUEMENT ACCEPTABLES (HALAVEN ); AUTHORISATION NUMBER AND DATE: EU/1/11/678/001-002, 17.03.2011
1087960 132011901976051 Italy ⤷  Start Trial PRODUCT NAME: ERIBULINA(HALAVEN); AUTHORISATION NUMBER(S) AND DATE(S): EU/1/11/678/001-002, 20110317
1087960 C201100037 Spain ⤷  Start Trial PRODUCT NAME: ERIBULINA; NATIONAL AUTHORISATION NUMBER: EU/1/11/678/001-002; DATE OF AUTHORISATION: 20110317; NUMBER OF FIRST AUTHORISATION IN EUROPEAN ECONOMIC AREA (EEA): EU/1/11/678/001-002; DATE OF FIRST AUTHORISATION IN EEA: 20110317
1087960 C01087960/01 Switzerland ⤷  Start Trial PRODUCT NAME: ERIBULIN; REGISTRATION NO/DATE: SWISSMEDIC 59489 20110513
1087960 122011100031 Germany ⤷  Start Trial PRODUCT NAME: ERIBULIN UND PHARMAZEUTISCH ANNEHMBARE SALZE HIERVON, INSBESONDERE ERIBULINMESYLAT; REGISTRATION NO/DATE: EU/1/11/678/001-002 20110317
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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