Last Updated: June 25, 2026

APLENZIN Drug Patent Profile


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

Aplenzin is a drug marketed by Bausch and is included in one NDA. There are eight patents protecting this drug and three Paragraph IV challenges.

This drug has fifty-two patent family members in eighteen countries.

The generic ingredient in APLENZIN is bupropion hydrobromide. There are thirty-eight drug master file entries for this compound. One supplier is listed for this compound. Additional details are available on the bupropion hydrobromide profile page.

DrugPatentWatch® Generic Entry Outlook for Aplenzin

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be June 27, 2026. This may change due to patent challenges or generic licensing.

Annual sales in 2022 were $25mm indicating the motivation for generic entry (peak sales were $395mm in 2013).

There have been four patent litigation cases involving the patents protecting this drug, indicating strong interest in generic launch. Recent data indicate that 63% of patent challenges are decided in favor of the generic patent challenger and that 54% of successful patent challengers promptly launch generic drugs.

There is one tentative approval for the generic drug (bupropion hydrobromide), which indicates the potential for near-term generic launch.

Indicators of Generic Entry

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DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for APLENZIN
Generic Entry Date for APLENZIN*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:

TABLET, EXTENDED RELEASE;ORAL

*The generic entry opportunity date is the latter of the last compound-claiming patent and the last regulatory exclusivity protection. Many factors can influence early or later generic entry. This date is provided as a rough estimate of generic entry potential and should not be used as an independent source.

Recent Clinical Trials for APLENZIN

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

SponsorPhase
Valeant Pharmaceuticals International, Inc.Phase 4
Bausch Health Americas, Inc.Phase 4
SRI InternationalPhase 4

See all APLENZIN clinical trials

Paragraph IV (Patent) Challenges for APLENZIN
Tradename Dosage Ingredient Strength NDA ANDAs Submitted Submissiondate
APLENZIN Extended-release Tablets bupropion hydrobromide 522 mg 022108 1 2009-12-24
APLENZIN Extended-release Tablets bupropion hydrobromide 174 mg 022108 1 2009-09-28
APLENZIN Extended-release Tablets bupropion hydrobromide 348 mg 022108 1 2009-09-24

US Patents and Regulatory Information for APLENZIN

APLENZIN is protected by eight US patents.

Based on analysis by DrugPatentWatch, the earliest date for a generic version of APLENZIN is ⤷  Start Trial.

This potential generic entry date is based on patent ⤷  Start Trial.

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Bausch APLENZIN bupropion hydrobromide TABLET, EXTENDED RELEASE;ORAL 022108-001 Apr 23, 2008 RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Bausch APLENZIN bupropion hydrobromide TABLET, EXTENDED RELEASE;ORAL 022108-003 Apr 23, 2008 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bausch APLENZIN bupropion hydrobromide TABLET, EXTENDED RELEASE;ORAL 022108-003 Apr 23, 2008 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bausch APLENZIN bupropion hydrobromide TABLET, EXTENDED RELEASE;ORAL 022108-001 Apr 23, 2008 RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  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 APLENZIN

When does loss-of-exclusivity occur for APLENZIN?

Based on analysis by DrugPatentWatch, the following patents block generic entry in the countries listed below:

Canada

Patent: 78626
Estimated Expiration: ⤷  Start Trial

Patent: 55596
Estimated Expiration: ⤷  Start Trial

Patent: 99588
Estimated Expiration: ⤷  Start Trial

Patent: 00733
Estimated Expiration: ⤷  Start Trial

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

See the table below for additional patents covering APLENZIN around the world.

Country Patent Number Title Estimated Expiration
Australia 2006261788 Modified-release formulations of a bupropion salt ⤷  Start Trial
Australia 2008285660 Bupropion hydrobromide and therapeutic applications ⤷  Start Trial
Australia 2008320915 Bupropion hydrobromide and therapeutic applications ⤷  Start Trial
Canada 2578626 FORMULATIONS A LIBERATION MODIFIEE D'UN SEL DE BUPROPION (MODIFIED-RELEASE FORMULATIONS OF A BUPROPION SALT) ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for APLENZIN

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
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
0656775 28/2000 Austria ⤷  Start Trial PRODUCT NAME: BUPROPION HYDROCHLORID; NAT. REGISTRATION NO/DATE: 1-23680 20000616; FIRST REGISTRATION: 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.