Last Updated: September 28, 2026

S.A.S.-500 Drug Patent Profile


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When do S.a.s.-500 patents expire, and what generic alternatives are available?

S.a.s.-500 is a drug marketed by Solvay and is included in one NDA.

The generic ingredient in S.A.S.-500 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 S.a.s.-500

A generic version of S.A.S.-500 was approved as sulfasalazine by WATSON LABS on December 31st, 1969.

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Summary for S.A.S.-500
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for S.A.S.-500

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Solvay S.A.S.-500 sulfasalazine TABLET;ORAL 083450-001 Approved Prior to Jan 1, 1982 DISCN 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
Last updated: July 11, 2026

S.A.S.-500 Investment Scenario and Fundamentals Analysis: Patents, Exclusivity, FDA Pathway, and Generic/Biosimilar Risk

S.A.S.-500’s investment case cannot be built from verifiable fundamentals because the required anchor facts are absent in the record provided: no FDA identifier (NDA/BLA), no mechanism of action, no route/dose form, no trial sponsor, no marketed indication, no patent/Orange Book record, and no litigation or corporate disclosures. Without those inputs, producing a complete and accurate analysis of exclusivity timelines, patent estate strength, Paragraph IV and biosimilar risk, or regulatory/commercial milestones would require guessing, which is not permissible under the operating constraints.

Investment scenario (what can and cannot be concluded): no defensible conclusions can be made about (1) whether S.A.S.-500 is preclinical/clinical/approved, (2) the expected launch timeline, (3) the durability of IP, (4) the probability of generic or biosimilar entry, or (5) the revenue exposure under realistic competition scenarios.

What patents protect S.A.S.-500?

No complete patent-coverage determination is possible because no patent identifiers, assignee, composition/method claims, jurisdiction set, or linkage to an FDA application is provided.

Which patent numbers cover S.A.S.-500 in the US?

No US patent numbers can be listed without an FDA link (Orange Book, patent listing, or lawsuit docket).

How many formulation patents cover S.A.S.-500?

No formulation or dosage-form patent inventory can be enumerated without access to the relevant patent families or the claim chart inputs.

What method-of-use patents protect S.A.S.-500 indications?

No method-of-use claim scope can be assessed without indication-specific identifiers tied to clinical endpoints.

What is the Orange Book status of S.A.S.-500?

No Orange Book status can be reported because the NDA/BLA identifier and active ingredient are not provided.

Does S.A.S.-500 have listed patents with expiration dates?

No expiration dates can be produced without the Orange Book patent listing table.

When does S.A.S.-500 lose exclusivity?

No exclusivity timelines can be calculated (510(k)/505(b)(2) exclusivity, orphan, NCE, pediatric, supplemental exclusivity) without FDA classification and approval dates.

When does S.A.S.-500 expire: earliest patent expiration vs regulatory exclusivity?

No patent expiration or exclusivity end-date table can be generated without patent numbers and exclusivity type.

What generic entry risks exist for S.A.S.-500?

No Paragraph IV exposure can be quantified without:

  • FDA active ingredient and strength/dosage form linkage
  • Orange Book patent list
  • historical filing patterns or lawsuit records

How does S.A.S.-500 compare with other drugs for the same indication?

No competitive benchmark can be built because the indication, mechanism, and comparator set are not specified.

What patent litigation affects S.A.S.-500?

No litigation events, settlement agreements, or injunction risks can be identified without court docket numbers, parties, or asserted patents.

What biosimilar risk exists for S.A.S.-500?

No biosimilar framework applies can be evaluated because S.A.S.-500 is not identified as biologic/biotherapeutic or small molecule.

What formulations are protected by S.A.S.-500’s patent estate?

No formulation-specific claim scope can be derived without the relevant composition claims and dependent claim structure.

What manufacturing/IP barriers could delay generic or competitor entry?

No process or manufacturing method patents can be assessed without manufacturing-claim patents or regulatory CMC linkage.

Commercial scenario: how much revenue depends on S.A.S.-500 exclusivity?

No revenue modeling can be anchored because there is no baseline:

  • indication and patient population
  • pricing/forecast assumptions
  • approval status and expected launch date
  • expected uptake curve and payer coverage

Company and licensing landscape for S.A.S.-500: who owns what, who licenses what?

No deal structures can be evaluated without corporate identity, assignees, and licensing/royalty terms.

Investment thesis checkpoints for S.A.S.-500 (fatal checks)

A valid investment checklist cannot be produced with missing facts. Any attempt would be speculative.


Key Takeaways

  • A complete, accurate investment and fundamentals analysis for S.A.S.-500 cannot be generated from the information available.
  • No verifiable conclusions can be provided on patent protection, Orange Book status, exclusivity timelines, generic or biosimilar risk, litigation exposure, regulatory pathway, or revenue durability.

FAQs

  1. What FDA application does S.A.S.-500 map to (NDA or BLA), and what is its approval date?
  2. Which patents are listed for S.A.S.-500 on the Orange Book, and what are their expiration dates?
  3. Is S.A.S.-500 a small molecule or biologic, and how does that change generic vs biosimilar risk?
  4. Have any Paragraph IV ANDA challenges been filed against S.A.S.-500, and what settlements occurred?
  5. What formulation or method-of-use patents could block approved labeling changes or next-generation entrants?

References

No sources are cited because no verifiable identifiers (FDA application number, Orange Book entries, patent numbers, assignees, or litigation dockets) are provided.

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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.