Last Updated: August 25, 2026

TIOCYSTIN Drug Patent Profile

Name: TIOCYSTIN Drug Patent, Exclusivity, and Generic Launch Dataset
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

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Which patents cover Tiocystin, and what generic alternatives are available?

Tiocystin is a drug marketed by Casper Pharma Llc and is included in one NDA.

The generic ingredient in TIOCYSTIN 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 Tiocystin

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

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Summary for TIOCYSTIN

US Patents:	0
Applicants:	1
NDAs:	1
DailyMed Link:	TIOCYSTIN at DailyMed

Drug patent expirations by year for TIOCYSTIN

US Patents and Regulatory Information for TIOCYSTIN

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Glossary

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Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Casper Pharma Llc	TIOCYSTIN	tiopronin	TABLET;ORAL	212927-001	Jun 2, 2026		RX	Yes	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Casper Pharma Llc	TIOCYSTIN	tiopronin	TABLET;ORAL	212927-002	Jun 2, 2026		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.