Last Updated: November 7, 2026

ARAVA Drug Patent Profile


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

Arava is a drug marketed by Sanofi Aventis Us and is included in one NDA.

The generic ingredient in ARAVA is leflunomide. There is one drug master file entry for this compound. Seventeen suppliers are listed for this compound. Additional details are available on the leflunomide profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Arava

A generic version of ARAVA was approved as leflunomide by APOTEX on September 13th, 2005.

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Summary for ARAVA
Pharmacology for ARAVA

US Patents and Regulatory Information for ARAVA

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Sanofi Aventis Us ARAVA leflunomide TABLET;ORAL 020905-001 Sep 10, 1998 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Sanofi Aventis Us ARAVA leflunomide TABLET;ORAL 020905-002 Sep 10, 1998 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Sanofi Aventis Us ARAVA leflunomide TABLET;ORAL 020905-003 Sep 10, 1998 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 ARAVA

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Sanofi Aventis Us ARAVA leflunomide TABLET;ORAL 020905-002 Sep 10, 1998 4,284,786 ⤷  Start Trial
Sanofi Aventis Us ARAVA leflunomide TABLET;ORAL 020905-003 Sep 10, 1998 4,351,841 ⤷  Start Trial
Sanofi Aventis Us ARAVA leflunomide TABLET;ORAL 020905-001 Sep 10, 1998 4,284,786 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration

EU/EMA Drug Approvals for ARAVA

Company Drugname Inn Product Number / Indication Status Generic Biosimilar Orphan Marketing Authorisation Marketing Refusal
Zentiva k.s. Leflunomide Zentiva (previously Leflunomide Winthrop) leflunomide EMEA/H/C/001129Leflunomide is indicated for the treatment of adult patients with:active rheumatoid arthritis as a 'disease-modifying antirheumatic drug' (DMARD);active psoriatic arthritis.Recent or concurrent treatment with hepatotoxic or haematotoxic DMARDs (e.g. methotrexate) may result in an increased risk of serious adverse reactions; therefore, the initiation of leflunomide treatment has to be carefully considered regarding these benefit / risk aspects.Moreover, switching from leflunomide to another DMARD without following the washout procedure may also increase the risk of serious adverse reactions even for a long time after the switching. Authorised no no no 2010-01-08
Ratiopharm GmbH Leflunomide ratiopharm leflunomide EMEA/H/C/002035Leflunomide is indicated for the treatment of adult patients with:active rheumatoid arthritis as a 'disease-modifying antirheumatic drug' (DMARD);active psoriatic arthritis.Recent or concurrent treatment with hepatotoxic or haematotoxic DMARDs (e.g. methotrexate) may result in an increased risk of serious adverse reactions; therefore, the initiation of leflunomide treatment has to be carefully considered regarding these benefit / risk aspects.Moreover, switching from leflunomide to another DMARD without following the washout procedure may also increase the risk of serious adverse reactions even for a long time after the switching. Authorised yes no no 2010-11-28
medac Gesellschaft für klinische Spezialpräparate mbH Leflunomide medac leflunomide EMEA/H/C/001227Leflunomide is indicated for the treatment of adult patients with:active rheumatoid arthritis as a 'disease-modifying antirheumatic drug' (DMARD).Recent or concurrent treatment with hepatotoxic or haematotoxic DMARDs (e.g. methotrexate) may result in an increased risk of serious adverse reactions, therefore, the initiation of leflunomide treatment has to be carefully considered regarding these benefit / risk aspects.Moreover, switching from leflunomide to another DMARD without following the washout procedure may also increase the risk of serious adverse reactions even for a long time after the switching. Authorised yes no no 2010-07-27
>Company >Drugname >Inn >Product Number / Indication >Status >Generic >Biosimilar >Orphan >Marketing Authorisation >Marketing Refusal

International Patents for ARAVA

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

Country Patent Number Title Estimated Expiration
Argentina 222680 PROCEDIMIENTO PARA LA PREPARACION DE (4-TRIFLUOR-METIL)-ANILIDA DE ACIDO 5-METILISOXAZOL-4-CARBOXILICO ⤷  Start Trial
Argentina 226894 PROCEDIMIENTO PARA OBTENER(4-TRIFLUORMETIL ANILIDA DE ACIDO 5-METIL ISOXAZOL-4-CARBOXILICO ⤷  Start Trial
Austria 1067 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration
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