Last Updated: August 9, 2026

ZYBAN Drug Patent Profile


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

Zyban is a drug marketed by Glaxosmithkline and is included in one NDA.

The generic ingredient in ZYBAN is bupropion hydrochloride. There are thirty-eight drug master file entries for this compound. Seventy-three suppliers are listed for this compound. Additional details are available on the bupropion hydrochloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Zyban

A generic version of ZYBAN was approved as bupropion hydrochloride by SENORES PHARMS on February 7th, 2000.

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US Patents and Regulatory Information for ZYBAN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Glaxosmithkline ZYBAN bupropion hydrochloride TABLET, EXTENDED RELEASE;ORAL 020711-002 May 14, 1997 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Glaxosmithkline ZYBAN bupropion hydrochloride TABLET, EXTENDED RELEASE;ORAL 020711-003 May 14, 1997 DISCN 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

Expired US Patents for ZYBAN

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Glaxosmithkline ZYBAN bupropion hydrochloride TABLET, EXTENDED RELEASE;ORAL 020711-003 May 14, 1997 ⤷  Start Trial ⤷  Start Trial
Glaxosmithkline ZYBAN bupropion hydrochloride TABLET, EXTENDED RELEASE;ORAL 020711-002 May 14, 1997 ⤷  Start Trial ⤷  Start Trial
Glaxosmithkline ZYBAN bupropion hydrochloride TABLET, EXTENDED RELEASE;ORAL 020711-002 May 14, 1997 ⤷  Start Trial ⤷  Start Trial
Glaxosmithkline ZYBAN bupropion hydrochloride TABLET, EXTENDED RELEASE;ORAL 020711-002 May 14, 1997 ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for ZYBAN

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

Country Patent Number Title Estimated Expiration
Austria 232383 ⤷  Start Trial
Australia 698883 ⤷  Start Trial
Australia 7235294 ⤷  Start Trial
Canada 2168364 COMPOSITION PHARMACEUTIQUE STABILISEE, A BASE DE BUPROPION (STABILIZED PHARMACEUTICAL COMPOSITION CONTAINING BUPROPION) ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for ZYBAN

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
0467488 SPC/GB00/019 United Kingdom ⤷  Start Trial PRODUCT NAME: BUPROPION HYDROCHLORIDE; REGISTERED: NL RVG 24160 19991201; UK PL 10949/0340 20000607
0467488 2000C/021 Belgium ⤷  Start Trial
2316456 CA 2017 00062 Denmark ⤷  Start Trial PRODUCT NAME: NALTREXON ELLER ET FARMACEUTISK ACCEPTABELT SALT DERAF, ISAER NALTREXONHYDROCHLORID, OG BUPROPION ELLER ET FARMACEUTISK ACCEPTABELT SALT DERAF, ISAER BUPROPIONHYDROCHLORID; REG. NO/DATE: EU/1/14/988 20150330
0656775 CR 2000 00018 Denmark ⤷  Start Trial PRODUCT NAME: BUPROPIONHYDROCHLORID; NAT. REG. NO/DATE: 31347 20000606; FIRST REG. NO/DATE: NL 24160 19991201
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description

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Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.