Last Updated: May 10, 2026

THIOLA Drug Patent Profile


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

Thiola is a drug marketed by Mission Pharma and Mission Pharmacal and is included in two NDAs. There is one patent protecting this drug.

The generic ingredient in THIOLA is tiopronin. There are three drug master file entries for this compound. Eight suppliers are listed for this compound. Additional details are available on the tiopronin profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Thiola

A generic version of THIOLA was approved as tiopronin by TEVA PHARMS USA INC on April 26th, 2021.

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Summary for THIOLA
Recent Clinical Trials for THIOLA

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

SponsorPhase
University of FloridaPhase 2
E. Sander ConnollyPhase 2
Food and Drug Administration (FDA)Phase 2

See all THIOLA clinical trials

Pharmacology for THIOLA

US Patents and Regulatory Information for THIOLA

THIOLA is protected by zero US patents and one FDA Regulatory Exclusivity.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Mission Pharma THIOLA tiopronin TABLET;ORAL 019569-001 Aug 11, 1988 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Mission Pharmacal THIOLA EC tiopronin TABLET, DELAYED RELEASE;ORAL 211843-002 Jun 28, 2019 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Mission Pharmacal THIOLA EC tiopronin TABLET, DELAYED RELEASE;ORAL 211843-001 Jun 28, 2019 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Mission Pharmacal THIOLA EC tiopronin TABLET, DELAYED RELEASE;ORAL 211843-001 Jun 28, 2019 AB RX Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Mission Pharmacal THIOLA EC tiopronin TABLET, DELAYED RELEASE;ORAL 211843-002 Jun 28, 2019 AB RX Yes Yes ⤷  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

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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.