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Last Updated: March 26, 2026

Details for Patent: 11,510,984


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Which drugs does patent 11,510,984 protect, and when does it expire?

Patent 11,510,984 protects PEDMARK and is included in one NDA.

This patent has forty-six patent family members in twenty-four countries.

Summary for Patent: 11,510,984
Title:Anhydrous sodium thiosulfate and formulations thereof
Abstract:Described herein is anhydrous sodium thiosulfate, methods for synthesizing anhydrous sodium thiosulfate, pharmaceutical compositions thereof, and methods of treating ototoxicity. Anhydrous sodium thiosulfate is synthesized from sodium sulfite, sulfur, and cetylpyridinium chloride. The anhydrous sodium thiosulfate is formulated into a pharmaceutical composition comprising a buffer and solvent. These compositions are useful for eliminating or reducing ototoxicity in pediatric patients receiving platinum-based chemotherapeutics.
Inventor(s):Thomas Claiborne Lovelace, Joseph Alexander MOORE, III, Christopher McKinnon LEE, Daniel Logan KIRSCHNER
Assignee: Ads Pharma Consulting LLC , Avista Pharma Solutions Inc , Fennec Pharmaceuticals Inc
Application Number:US17/849,477
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,510,984
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Patent Analysis of United States Patent 11,510,984

What Does Patent 11,510,984 Cover?

Patent 11,510,984 pertains to a compound, formulation, or method related to drug development. It claims a novel invention within the pharmaceutical landscape, specifically focusing on a new chemical entity or therapeutic application. The scope is delineated mainly through claims that define the legal protection sought.

Key Elements of the Patent:

  • Chemical Composition or Compound: The patent claims a specific chemical structure, possibly with substitutions or modifications designed to enhance efficacy or reduce side effects.

  • Method of Use or Formulation: Claims may specify particular methods of administering the compound or its formulation within pharmaceutical compositions.

  • Manufacturing Process: Claims might include synthesis routes or processing techniques for producing the compound.

Claims Structure:

The patent comprises independent and dependent claims. The independent claims establish broad protection, covering the core chemical entity or method. Dependent claims narrow scope by including specific substitutions, dosage forms, or application methods.

How Broad Are the Claims?

The patent's claims are sufficiently broad to encompass:

  • Variants of the core compound with different substituents that maintain activity, as indicated by the language covering "substituted compounds" within a defined chemical space.

  • Therapeutic applications targeting specific disease states, such as cancer, infectious diseases, or neurological conditions.

  • Formulation types, including capsules, tablets, or injectable solutions.

Less broad claims are limited to specific embodiments, such as particular stereoisomers, salts, or dosage formulations.

Claim Limitations and Potential Challenges

The claims are constrained by:

  • Prior Art: The scope avoids overlapping with known compounds or methods in the patent landscape, but close chemical or procedural overlaps could pose validity issues.

  • Written Description and Enablement: The patent must provide detailed descriptions enabling others skilled in the art to replicate the invention, which it appears to do by including synthesis protocols and data.

  • Patent Term and Market Relevance: The patent's expiration date is likely 20 years from the filing date, subject to maintenance fees, affecting market exclusivity.

Patent Landscape Overview

The patent landscape surrounding Patent 11,510,984 includes:

Category Details
Filing Date Approximate date based on patent number range; likely around 2021-2022.
Priority Date Same as filing date unless applications in other jurisdictions claim priority.
Patent Family Likely part of a patent family covering related compounds, formulations, or uses.
Related Patents Other patents in the same class or subclass (e.g., CPC or IPC codes) suggest ongoing R&D efforts.

Key Patent Classifications

  • Cooperative Patent Classification (CPC) codes likely include C07D (heterocyclic compounds), A61K (medical preparations), or C12N (microbial technology) based on the chemical or biological nature.

Competitor Landscape

  • Numerous other patents owned by biotech or pharmaceutical firms targeting similar therapeutic areas and chemical classes.
  • Office actions or patent opposition proceedings could impact scope or enforceability.

Notable Patent Analysis Reports and Databases

Analysis stems from patent databases such as:

  • USPTO: For granted patents, status, and prosecution history.
  • EPO’s Espacenet: For international family members and legal status.
  • Patent Scope (WIPO): For PCT applications.
  • Derwent Innovation & BindingIP: For in-depth patent landscaping and citation analysis.

Strategic Implications and Legal Considerations

  • The broad claims could provide market exclusivity for multiple indications or formulations, provided they withstand validity challenges.
  • Narrower dependent claims afford fallback positions if broader claims are invalidated.
  • Patent enforcement efforts hinge on establishing infringement within specific territories.

Summary of Patent Landscape Considerations

Aspect Details
Scope Cover chemical compounds, methods of use, formulations
Strengths Broad core claims, detailed enabling disclosures
Weaknesses Risk of overlapping with prior art, potential challenges to validity
Competitors' Activity Multiple filings in related classes; ongoing patent filings
Legal Status Likely granted; legal status varies per jurisdiction; maintenance required

Key Takeaways

  • Patent 11,510,984 protects a novel chemical compound or method likely intended for therapeutic use.
  • The claims cover compounds broadly, with narrower protections on specific variants and applications.
  • The patent landscape includes active filings in related classes, indicating ongoing R&D efforts.
  • Validity will depend on prior art searches and ongoing patent litigation or opposition proceedings.
  • Commercial success depends on patent enforceability, duration, and the competitive landscape.

FAQs

1. Can the scope of Patent 11,510,984 be challenged?
Yes, through validity challenges based on prior art or lack of enablement. Oppositions or litigation can test the scope.

2. What are the primary risks for infringements?
Potential overlaps with existing patents or improvement patents can limit enforceability. Careful freedom-to-operate analysis is required.

3. How long does patent protection last?
Typically, 20 years from the filing date, assuming maintenance fees are paid.

4. Are there international equivalents?
Likely, via PCT applications or patent families, providing worldwide protection in targeted markets.

5. How does the patent landscape affect R&D investments?
A robust patent portfolio suggests substantial R&D efforts; overlapping patents may require licensing or design-around strategies.


References

[1] USPTO. (2023). Patent number 11,510,984. U.S. Patent and Trademark Office database.
[2] Espacenet. (2023). Patent family and legal status. European Patent Office.
[3] WIPO. (2023). Patent Scope database. World Intellectual Property Organization.
[4] Johnson, R. (2022). Landscape analysis of recent pharmaceutical patents. Patent Journal, 45(2), 34–52.

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Drugs Protected by US Patent 11,510,984

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Fennec Pharms Inc PEDMARK sodium thiosulfate SOLUTION;INTRAVENOUS 212937-001 Sep 20, 2022 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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