Last Updated: June 11, 2026

TPOXX Drug Patent Profile


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

Tpoxx is a drug marketed by Siga Technologies and is included in two NDAs. There are eight patents protecting this drug.

This drug has ninety-six patent family members in twenty-four countries.

The generic ingredient in TPOXX is tecovirimat. One supplier is listed for this compound. Additional details are available on the tecovirimat profile page.

DrugPatentWatch® Generic Entry Outlook for Tpoxx

Tpoxx was eligible for patent challenges on July 13, 2022.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be March 23, 2031. This may change due to patent challenges or generic licensing.

Indicators of Generic Entry

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Summary for TPOXX
International Patents:96
US Patents:8
Applicants:1
NDAs:2
Finished Product Suppliers / Packagers: 1
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 127
What excipients (inactive ingredients) are in TPOXX?TPOXX excipients list
DailyMed Link:TPOXX at DailyMed
DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for TPOXX
Generic Entry Dates for TPOXX*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:
CAPSULE;ORAL
Generic Entry Dates for TPOXX*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:
SOLUTION;INTRAVENOUS

*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.

US Patents and Regulatory Information for TPOXX

TPOXX is protected by nine US patents.

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

This potential generic entry date is based on patent 12,433,868.

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
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 RX Yes Yes 7,737,168 ⤷  Start Trial ⤷  Start Trial
Siga Technologies TPOXX tecovirimat SOLUTION;INTRAVENOUS 214518-001 May 18, 2022 RX Yes Yes 9,907,859 ⤷  Start Trial ⤷  Start Trial
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 RX Yes Yes 12,433,868 ⤷  Start Trial Y ⤷  Start Trial
Siga Technologies TPOXX tecovirimat SOLUTION;INTRAVENOUS 214518-001 May 18, 2022 RX Yes Yes 10,576,165 ⤷  Start Trial Y ⤷  Start Trial
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 RX Yes Yes 11,890,270 ⤷  Start Trial ⤷  Start Trial
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 RX Yes Yes 9,339,466 ⤷  Start Trial Y Y ⤷  Start Trial
Siga Technologies TPOXX tecovirimat SOLUTION;INTRAVENOUS 214518-001 May 18, 2022 RX Yes Yes 7,737,168 ⤷  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 TPOXX

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Siga Technologies TPOXX tecovirimat SOLUTION;INTRAVENOUS 214518-001 May 18, 2022 8,124,643 ⤷  Start Trial
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 8,124,643 ⤷  Start Trial
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 8,802,714 ⤷  Start Trial
Siga Technologies TPOXX tecovirimat SOLUTION;INTRAVENOUS 214518-001 May 18, 2022 8,530,509 ⤷  Start Trial
Siga Technologies TPOXX tecovirimat CAPSULE;ORAL 208627-001 Jul 13, 2018 8,530,509 ⤷  Start Trial
Siga Technologies TPOXX tecovirimat SOLUTION;INTRAVENOUS 214518-001 May 18, 2022 8,802,714 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

International Patents for TPOXX

When does loss-of-exclusivity occur for TPOXX?

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

African Regional IP Organization (ARIPO)

Patent: 21
Estimated Expiration: ⤷  Start Trial

Argentina

Patent: 2566
Patent: FORMULACIONES LIQUIDAS DE ST-246 Y METODOS RELACIONADOS, PROCESO
Estimated Expiration: ⤷  Start Trial

Patent: 3435
Estimated Expiration: ⤷  Start Trial

Patent: 2178
Patent: COMPOSICIÓN FARMACÉUTICA LÍQUIDA Y PROCESO PARA PREPARARLA
Estimated Expiration: ⤷  Start Trial

Australia

Patent: 11232551
Estimated Expiration: ⤷  Start Trial

Patent: 11285871
Patent: ST-246 liquid formulations and methods
Estimated Expiration: ⤷  Start Trial

Brazil

Patent: 2012023743
Estimated Expiration: ⤷  Start Trial

Patent: 2013002646
Estimated Expiration: ⤷  Start Trial

Canada

Patent: 93533
Estimated Expiration: ⤷  Start Trial

Patent: 07528
Patent: PREPARATIONS LIQUIDES DE ST-246 ET PROCEDES (ST-246 LIQUID FORMULATIONS AND METHODS)
Estimated Expiration: ⤷  Start Trial

Patent: 30671
Estimated Expiration: ⤷  Start Trial

Chile

Patent: 12002621
Estimated Expiration: ⤷  Start Trial

China

Patent: 3068232
Estimated Expiration: ⤷  Start Trial

Patent: 3281898
Patent: St-246 liquid formulations and methods
Estimated Expiration: ⤷  Start Trial

Patent: 5111130
Estimated Expiration: ⤷  Start Trial

Patent: 5111131
Estimated Expiration: ⤷  Start Trial

Patent: 5175311
Estimated Expiration: ⤷  Start Trial

Patent: 6074370
Patent: ST‑246液体配制物以及方法 (ST-246 LIQUID FORMULATIONS AND METHODS)
Estimated Expiration: ⤷  Start Trial

Denmark

Patent: 49871
Estimated Expiration: ⤷  Start Trial

Patent: 00715
Estimated Expiration: ⤷  Start Trial

European Patent Office

Patent: 49871
Estimated Expiration: ⤷  Start Trial

Patent: 00715
Patent: PRÉPARATIONS LIQUIDES DE ST-246 ET PROCÉDÉS (ST-246 LIQUID FORMULATIONS AND METHODS)
Estimated Expiration: ⤷  Start Trial

France

Patent: C1023
Estimated Expiration: ⤷  Start Trial

Israel

Patent: 1991
Estimated Expiration: ⤷  Start Trial

Patent: 4430
Patent: Liquid pharmaceutical formulation comprising st-246 and a beta-cyclodextrin, a process of making the liquid formulation, a unit dosage liquid formulation and a process for preparing a water-soluble solid st-246 pharmaceutical formulation
Estimated Expiration: ⤷  Start Trial

Patent: 8239
Estimated Expiration: ⤷  Start Trial

Japan

Patent: 98196
Estimated Expiration: ⤷  Start Trial

Patent: 18041
Estimated Expiration: ⤷  Start Trial

Patent: 13522371
Estimated Expiration: ⤷  Start Trial

Patent: 13532729
Estimated Expiration: ⤷  Start Trial

Patent: 16040323
Patent: ST−246の多形型および調製方法 (POLYMORPHIC FORMS OF ST-246 AND METHODS OF PREPARATION)
Estimated Expiration: ⤷  Start Trial

Patent: 18012735
Patent: ST−246の多形型および調製方法 (POLYMORPHIC FORMS OF ST-246 AND METHODS OF PREPARATION)
Estimated Expiration: ⤷  Start Trial

Mexico

Patent: 7795
Patent: FORMULACIONES LIQUIDAS DE ST-246 Y METODOS. (ST-246 LIQUID FORMULATIONS AND METHODS.)
Estimated Expiration: ⤷  Start Trial

Patent: 1428
Patent: FORMAS POLIMORFICAS ST-246 Y METODOS DE PREPARACION. (POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION.)
Estimated Expiration: ⤷  Start Trial

Patent: 8106
Patent: FORMULACIONES LIQUIDAS DE ST-246 Y METODOS. (ST-246 LIQUID FORMULATIONS AND METHODS.)
Estimated Expiration: ⤷  Start Trial

Patent: 12010859
Patent: FORMAS POLIMORFICAS ST-246 Y METODOS DE PREPARACION. (POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION.)
Estimated Expiration: ⤷  Start Trial

Patent: 13001389
Patent: FORMULACIONES LIQUIDAS DE ST-246 Y METODOS. (ST-246 LIQUID FORMULATIONS AND METHODS.)
Estimated Expiration: ⤷  Start Trial

New Zealand

Patent: 2578
Patent: Polymorphic forms st-246 and methods of preparation
Estimated Expiration: ⤷  Start Trial

Peru

Patent: 130212
Patent: FORMAS POLIMORFICAS DE ST-246 Y METODOS DE PREPARACION
Estimated Expiration: ⤷  Start Trial

Patent: 170944
Patent: FORMAS POLIMORFICAS DE ST-246 Y METODOS DE PREPARACION
Estimated Expiration: ⤷  Start Trial

Russian Federation

Patent: 78606
Patent: ПОЛИМОРФНЫЕ ФОРМЫ СОЕДИНЕНИЯ ST-246 И СПОСОБЫ ПОЛУЧЕНИЯ (POLYMORPHIC FORMS OF ST-246 COMPOUND AND METHODS FOR PRODUCING)
Estimated Expiration: ⤷  Start Trial

Patent: 12144818
Patent: ПОЛИМОРФНЫЕ ФОРМЫ СОЕДИНЕНИЯ ST-246 И СПОСОБЫ ПОЛУЧЕНИЯ (POLYMORPHIC FORMS OF ST-246 COMPOUND AND METHODS FOR PRODUCING)
Estimated Expiration: ⤷  Start Trial

Patent: 15146899
Patent: ПОЛИМОРФНЫЕ ФОРМЫ СОЕДИНЕНИЯ ST-246 И СПОСОБЫ ПОЛУЧЕНИЯ
Estimated Expiration: ⤷  Start Trial

Singapore

Patent: 201501936P
Patent: POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION
Estimated Expiration: ⤷  Start Trial

Patent: 201506031U
Patent: ST-246 LIQUID FORMULATIONS AND METHODS
Estimated Expiration: ⤷  Start Trial

Patent: 202105262Q
Patent: ST-246 LIQUID FORMULATIONS AND METHODS
Estimated Expiration: ⤷  Start Trial

Patent: 4201
Patent: POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION
Estimated Expiration: ⤷  Start Trial

Patent: 7243
Patent: ST-246 LIQUID FORMULATIONS AND METHODS
Estimated Expiration: ⤷  Start Trial

South Africa

Patent: 1207141
Patent: POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION
Estimated Expiration: ⤷  Start Trial

Patent: 1300930
Patent: ST-246 LIQUID FORMULATIONS AND METHODS
Estimated Expiration: ⤷  Start Trial

South Korea

Patent: 1868117
Estimated Expiration: ⤷  Start Trial

Patent: 130018271
Patent: POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION
Estimated Expiration: ⤷  Start Trial

Patent: 130135836
Patent: ST-246 LIQUID FORMULATIONS AND METHODS
Estimated Expiration: ⤷  Start Trial

Patent: 150011016
Patent: POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION
Estimated Expiration: ⤷  Start Trial

Patent: 150092354
Patent: POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION
Estimated Expiration: ⤷  Start Trial

Patent: 160028489
Patent: 다형체 형태 ST―246 및 제조방법 (POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION)
Estimated Expiration: ⤷  Start Trial

Patent: 160062208
Patent: 다형체 형태 ST―246 및 제조방법 (POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION)
Estimated Expiration: ⤷  Start Trial

Patent: 170102070
Patent: 다형체 형태 ST―246 및 제조방법 (POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION)
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 TPOXX around the world.

Country Patent Number Title Estimated Expiration
Brazil 112013002646 ⤷  Start Trial
Denmark 1638938 ⤷  Start Trial
Singapore 10201501936P POLYMORPHIC FORMS ST-246 AND METHODS OF PREPARATION ⤷  Start Trial
European Patent Office 2192901 AGENTS CHIMIQUES, COMPOSITIONS ET PROCÉDÉS DE TRAITEMENT ET DE PRÉVENTION DES INFECTIONS À ORTHOPOXVIRUS ET DES MALADIES ASSOCIÉES (CHEMICALS, COMPOSITIONS, AND METHODS FOR TREATMENT AND PREVENTION OF ORTHOPOXVIRUS INFECTIONS AND ASSOCIATED DISEASES) ⤷  Start Trial
China 101702904 ⤷  Start Trial
Israel 224430 Liquid pharmaceutical formulation comprising st-246 and a beta-cyclodextrin, a process of making the liquid formulation, a unit dosage liquid formulation and a process for preparing a water-soluble solid st-246 pharmaceutical formulation ⤷  Start Trial
Israel 258239 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Supplementary Protection Certificates for TPOXX

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1638938 122022000032 Germany ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT ODER EIN PHARMAZEUTISCH VERTRAEGLICHES SALZ DAVON; REGISTRATION NO/DATE: EU/1/21/1600 20220106
1638938 2290024-5 Sweden ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF; REG. NO/DATE: EU/1/21/1600/001 20220107
1638938 301177 Netherlands ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT OF EEN FARMACEUTISCH AANVAARDBAAR ZOUT DAARVAN; REGISTRATION NO/DATE: EU/1/21/1600/001 20220107
1638938 C202230021 Spain ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT O UNA SAL FARMACEUTICAMENTE ACEPTABLE DEL MISMO; NATIONAL AUTHORISATION NUMBER: EU/1/21/1600; DATE OF AUTHORISATION: 20220106; NUMBER OF FIRST AUTHORISATION IN EUROPEAN ECONOMIC AREA (EEA): EU/1/21/1600; DATE OF FIRST AUTHORISATION IN EEA: 20220106
2549871 122022000033 Germany ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT; REGISTRATION NO/DATE: EU/1/21/1600 20220106
2549871 22C1023 France ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT, SOUS TOUTES LES FORMES RELEVANT DE LA PROTECTION DU BREVET DE BASE; REGISTRATION NO/DATE: EU/1/21/1600/001 20220106
1638938 2022C/521 Belgium ⤷  Start Trial PRODUCT NAME: TECOVIRIMAT OF EEN FARMACEUTISCH AANVAARDBAAR ZOUT HIERVAN; AUTHORISATION NUMBER AND DATE: EU/1/21/1600 20220107
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description
DrugChatter Q&A for TPOXX

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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.