Last Updated: November 13, 2026

SULFASALAZINE Drug Patent Profile

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When do Sulfasalazine patents expire, and when can generic versions of Sulfasalazine launch?

Sulfasalazine is a drug marketed by Nuvo Pharms Inc, Watson Labs, Chartwell, Epic Pharma Llc, Rising, Sun Pharm Industries, and Superpharm. and is included in eleven NDAs.

The generic ingredient in SULFASALAZINE is sulfasalazine. Ten suppliers are listed for this compound. Additional details are available on the sulfasalazine profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Sulfasalazine

A generic version of SULFASALAZINE was approved as sulfasalazine by WATSON LABS on December 31^st, 1969.

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Summary for SULFASALAZINE

US Patents:	0
Applicants:	7
NDAs:	11

US Patents and Regulatory Information for SULFASALAZINE

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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
Nuvo Pharms Inc	SULFASALAZINE	sulfasalazine	TABLET, DELAYED RELEASE;ORAL	075339-001	Jan 11, 2002	AB	RX	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Sun Pharm Industries	SULFASALAZINE	sulfasalazine	TABLET;ORAL	089590-001	Oct 19, 1987		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Epic Pharma Llc	SULFASALAZINE	sulfasalazine	TABLET;ORAL	086184-001	Approved Prior to Jan 1, 1982		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Superpharm	SULFASALAZINE	sulfasalazine	TABLET;ORAL	089339-001	Oct 26, 1987		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Watson Labs	SULFASALAZINE	sulfasalazine	TABLET, DELAYED RELEASE;ORAL	088052-001	May 24, 1983		DISCN	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Chartwell	SULFASALAZINE	sulfasalazine	TABLET;ORAL	080197-001	Approved Prior to Jan 1, 1982	AB	RX	No	No	⤷ Start Trial	⤷ Start Trial				⤷ Start Trial
Rising	SULFASALAZINE	sulfasalazine	TABLET;ORAL	219046-001	Nov 4, 2025	AB	RX	No	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

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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.