Rufinamide Patent Expiration

Rufinamide is Used for managing and treating epilepsy. It was first introduced by Eisai Inc in its drug Banzel on Nov 14, 2008. 12 different companies have introduced drugs containing Rufinamide.


Rufinamide Patents

Given below is the list of patents protecting Rufinamide, along with the drug name that holds that patent and the company name owning that drug.

Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Banzel US6740669

(Pediatric)

Crystal modification of 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxamide and its use as antiepileptic May 14, 2023

(Expired)

Eisai Inc
Banzel US6740669 Crystal modification of 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxamide and its use as antiepileptic Nov 14, 2022

(Expired)

Eisai Inc
Banzel US7750028

(Pediatric)

Crystal modifications of 1-(2,6-difluorobenzyl)-1H-1, 2,3-triazole-4-carboxamide Apr 19, 2019

(Expired)

Eisai Inc
Banzel US8076362

(Pediatric)

Crystal modification A of 1-(2,6-difluorobenzyI)-1 H-1,2,3-triazole-4-carboxamide and dosage forms and formulations thereof Dec 08, 2018

(Expired)

Eisai Inc
Banzel US7750028 Crystal modifications of 1-(2,6-difluorobenzyl)-1H-1, 2,3-triazole-4-carboxamide Oct 19, 2018

(Expired)

Eisai Inc
Banzel US8076362 Crystal modification A of 1-(2,6-difluorobenzyI)-1 H-1,2,3-triazole-4-carboxamide and dosage forms and formulations thereof Jun 08, 2018

(Expired)

Eisai Inc



Rufinamide's Family Patents

Family Patents

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Rufinamide Generic API Manufacturers

Several generic applications have been filed for Rufinamide. The first generic version for Rufinamide was by Pharmobedient Consulting Llc and was approved on May 16, 2016. And the latest generic version is by Msn Laboratories Private Ltd and was approved on Apr 15, 2025.

Given below is the list of companies who have filed for Rufinamide generic, along with the locations of their manufacturing plants worldwide.