Last Updated: August 2, 2026

BANZEL Drug Patent Profile


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Which patents cover Banzel, and when can generic versions of Banzel launch?

Banzel is a drug marketed by Eisai Inc and is included in two NDAs.

The generic ingredient in BANZEL is rufinamide. There are seven drug master file entries for this compound. Twelve suppliers are listed for this compound. Additional details are available on the rufinamide profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Banzel

A generic version of BANZEL was approved as rufinamide by GLENMARK PHARMS LTD on May 16th, 2016.

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Summary for BANZEL
Paragraph IV (Patent) Challenges for BANZEL
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
BANZEL Oral Suspension rufinamide 40 mg/mL 201367 1 2014-06-16
BANZEL Tablets rufinamide 200 mg and 400 mg 021911 5 2012-11-14

US Patents and Regulatory Information for BANZEL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Eisai Inc BANZEL rufinamide SUSPENSION;ORAL 201367-001 Mar 3, 2011 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Eisai Inc BANZEL rufinamide TABLET;ORAL 021911-003 Nov 14, 2008 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Eisai Inc BANZEL rufinamide TABLET;ORAL 021911-001 Nov 14, 2008 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Eisai Inc BANZEL rufinamide TABLET;ORAL 021911-002 Nov 14, 2008 AB RX Yes No ⤷  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 BANZEL

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

Country Patent Number Title Estimated Expiration
Argentina 012945 FORMAS CRISTALINAS B Y C DEL COMPUESTO 1-(2,6-DIFLUORBENCIL)-1H-1,2,3- TRIAZOL-4 CARBOXAMIDA, UN PREPARADO FARMACEUTICO Y USO PARA LA OBTENCIONDEL MISMO Y PARA LA MANUFACTURA DE UN MEDICAMENTO ⤷  Start Trial
Argentina 012946 FORMA CRISTALINA A DE 1-(2,6-DIFLUORBENCIL)-1H-1,2,3-TRIAZOL-4-CARBOXAMIDA, PREPARACIONES FARMACEUTICAS QUE LOS CONTIENEN Y SU USO PARA LA PREPARACION DE MEDICAMENTOS ⤷  Start Trial
Argentina 061004 FORMAS CRISTALINAS B Y C DEL COMPUESTO 1-(2,6-DIFLUOROBENCIL)-1H-1,2,3-TRIAZOL-4- CARBOXAMIDA, UN PREPARADO FARMACEUTICO Y USO PARA LA OBTENCION DEL MISMO Y PARA LA MANUFACTURA DE UN MEDICAMENTO ⤷  Start Trial
Argentina 061005 FORMA CRISTALINA A DE 1-(2,6- DIFLUOROBENCIL)-1H-1,2,3- TRIAZOL-4-CARBOXAMIDA, PREPARACIONES FARMACEUTICAS QUE LAS CONTIENEN Y SU USO PARA LA PREPARACION DE MEDICAMENTOS ⤷  Start Trial
Austria 232852 ⤷  Start Trial
Austria 237599 ⤷  Start Trial
Australia 725517 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for BANZEL

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0994863 91345 Luxembourg ⤷  Start Trial CERTIFICATE NAME: RUFINAMIDE ET SES SELS PHARMACEUTIQUEMENT ACCEPTABLES (INOVELON); FIRST REGISTRATION DATE: 20070116
0994863 SPC/GB07/041 United Kingdom ⤷  Start Trial PRODUCT NAME: CRYSTAL MODIFICATION A OF RUFINAMIDE; REGISTRATION NO/DATE: EU/1/06/378/001 - 015
0994863 07C0037 France ⤷  Start Trial PRODUCT NAME: MODIFICATION CRISTALLINE A DU RUFINAMIDE; REGISTRATION NO/DATE IN FRANCE: EU/1/06/378/001 DU 20070116; REGISTRATION NO/DATE AT EEC: EU/1/06/378/001-016 DU 20070116
0994863 C00994863/01 Switzerland ⤷  Start Trial PRODUCT NAME: RUFINAMID; REGISTRATION NUMBER/DATE: SWISSMEDIC 58097 06.01.2009
0994863 303 Finland ⤷  Start Trial
0994863 CA 2007 00037 Denmark ⤷  Start Trial PRODUCT NAME: RUFINAMID, KRYSTALMODIFIKATION A
0994863 300284 Netherlands ⤷  Start Trial 300284, 20180608, EXPIRES: 20220115
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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