Last Updated: November 8, 2026

TWINJECT Drug Patent Profile

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Which patents cover Twinject, and what generic alternatives are available?

Twinject is a drug marketed by Impax and is included in one NDA.

The generic ingredient in TWINJECT is epinephrine. There is one drug master file entry for this compound. Thirty-three suppliers are listed for this compound. Additional details are available on the epinephrine profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Twinject

A generic version of TWINJECT was approved as epinephrine by BPI LABS on July 29th, 2014.

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Summary for TWINJECT
Recent Clinical Trials for TWINJECT

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

SponsorPhase
University of LouisvillePhase 4
Arthroplasty Foundation, Inc.Phase 4

See all TWINJECT clinical trials

US Patents and Regulatory Information for TWINJECT

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Impax TWINJECT epinephrine INJECTABLE;INTRAMUSCULAR, SUBCUTANEOUS 020800-002 May 28, 2004 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Impax TWINJECT epinephrine INJECTABLE;INTRAMUSCULAR, SUBCUTANEOUS 020800-001 May 30, 2003 DISCN No 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

Expired US Patents for TWINJECT

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Impax TWINJECT epinephrine INJECTABLE;INTRAMUSCULAR, SUBCUTANEOUS 020800-001 May 30, 2003 ⤷  Start Trial ⤷  Start Trial
Impax TWINJECT epinephrine INJECTABLE;INTRAMUSCULAR, SUBCUTANEOUS 020800-002 May 28, 2004 ⤷  Start Trial ⤷  Start Trial
Impax TWINJECT epinephrine INJECTABLE;INTRAMUSCULAR, SUBCUTANEOUS 020800-001 May 30, 2003 ⤷  Start Trial ⤷  Start Trial
Impax TWINJECT epinephrine INJECTABLE;INTRAMUSCULAR, SUBCUTANEOUS 020800-002 May 28, 2004 ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for TWINJECT

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

Country Patent Number Title Estimated Expiration
Australia 2005314174 Method and apparatus for delivering epinephrine ⤷  Start Trial
Australia 2005314401 Medicine injection devices and methods ⤷  Start Trial
Brazil PI0518415 aparelho formando um dispositivo de injeÇço de medicamento, e, mÉtodos para acionar uma agulha de seringa atÉ uma profundidade de penetraÇço selecionada, e para injetar medicamento de uma seringa e armazenar a seringa apàs injeÇço do medicamento ⤷  Start Trial
Brazil PI0518460 mÉtodo para tratar emergÊncia alÉrgica em um paciente, dispositivo de distribuiÇço de droga contendo uma soluÇço de epinefrina, e, kit para tratar uma emergÊncia alÉrgia' ⤷  Start Trial
Canada 2585707 PROCEDE ET DISPOSITIF DE DELIVRANCE D'EPINEPHRINE (METHOD AND APPARATUS FOR DELIVERING EPINEPHRINE) ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for TWINJECT

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
3678649 LUC00378 Luxembourg ⤷  Start Trial PRODUCT NAME: COMBINAISON D'EPINEPHRINE ET DE DODECYLMALTOSIDE, SOUS TOUTES SES FORMES PROTEGEES PAR LE BREVET DE BASE; AUTHORISATION NUMBER AND DATE: EU/1/24/1846 20250211
3678649 2025C/508 Belgium ⤷  Start Trial PRODUCT NAME: COMBINATIE VAN EPINEPHRINE EN DODECYLMALTOSIDE, IN ALLE VORMEN BESCHERMD DOOR HET BASISOCTROOI; AUTHORISATION NUMBER AND DATE: EU/1/24/1846 20240823
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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