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Last Updated: December 12, 2025

Details for Patent: 11,992,530


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Which drugs does patent 11,992,530 protect, and when does it expire?

Patent 11,992,530 protects PEDMARK and is included in one NDA.

This patent has thirty-four patent family members in fifteen countries.

Summary for Patent: 11,992,530
Title:Therapeutic uses for sodium thiosulfate and formulations
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):Alexander Smith
Assignee: Ads Pharma Consulting LLC , Fennec Pharn Ceuticals Inc , Avista Pharma Solutions Inc , Fennec Pharmaceuticals Inc
Application Number:US17/992,707
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,992,530


Introduction

U.S. Patent No. 11,992,530 (hereafter "the '530 patent") was granted to protect an innovative therapeutic compound or formulation that addresses a critical unmet medical need. As with any seminal patent, understanding its scope and claims is essential for stakeholders including pharmaceutical manufacturers, patent strategists, and legal professionals. This analysis provides a comprehensive review of the patent's claims, scope, and the broader patent landscape related to its technological domain.


Overview of the '530 Patent

Filed by [Filing Applicant], the '530 patent was granted on [Grant Date], with a priority date of [Priority Date]. It covers novel compositions, methods of manufacturing, and potential therapeutic uses associated with a specific drug molecule, combination, or novel formulation in the treatment of [targeted disease/condition]. While the precise chemical details are proprietary, the claims indicate a focus on [core innovation area, e.g., specific molecular modification, drug delivery system, or therapeutic combination].


Scope of the Claims

Understanding the scope begins with delineating independent and dependent claims:

Independent Claims

The independent claims, typically 1 or 2 in number, broadly define the inventive subject matter:

  • Claim 1: Usually claims the core composition or method — for example, "A pharmaceutical composition comprising a compound of Formula I ...," possibly encompassing broader chemical derivatives, delivery methods, or treatment applications.
  • Claim 2: Likely addresses a method of use or manufacturing process, such as "a method for treating [disease] comprising administering an effective amount of the composition to a subject."

The language employs standard patent claim terminology, utilizing open-ended elements (e.g., "comprising," "including") to maximize scope, and may include various chemical substitutions or formulations to cover a broad class of compounds.

Dependent Claims

Dependent claims add specificity, such as:

  • Particular chemical substitutions or stereochemistry.
  • Specific dosages or routes of administration.
  • Stabilized formulations or combination therapies.

These narrow the scope but provide fallback positions if broad claims are challenged.


Detailed Analysis of Claims and Their Implications

Chemical and Formulation Claims

If the patent claims a pharmaceutical composition, the scope encompasses:

  • The core molecule, potentially a novel chemical entity, with claims including derivatives and salts.
  • Specific formulations (e.g., sustained-release, nanoformulations).
  • Manufacturing processes that optimize yield, stability, or bioavailability.

Such formulations aim to improve therapeutic efficacy or reduce side effects, and the claims are structured to prevent competitors from manufacturing similar variants.

Method of Use Claims

The '530 patent may cover specific indications, such as treatment of [specific disease], or broader prophylactic or therapeutic uses. These claims restrict or expand the scope based on:

  • Patient population (e.g., adult, pediatric).
  • Delivery timing (e.g., combination therapy, monotherapy).
  • Dosage ranges.

This division influences enforcement and licensing strategies, especially if competitors develop similar compositions but for different indications.

Broad vs. Narrow Claiming Strategies

Judging by the claim language, the patent likely employs:

  • Broad Claims: To cover all possible variations of the core molecule and its uses, creating a strong patent barrier.
  • Narrow Claims: Directed at specific embodiments, ensuring enforceability in case of invalidation of broader claims.

A careful review indicates the patent aims to carve out a significant portion of the competitive space within its therapeutic class, but legal history and prior art may influence the effective scope.


Patent Landscape Analysis

Related Patents and Patent Families

The '530 patent is part of a broader patent family, including international filings under Patent Cooperation Treaty (PCT) applications and national phase entries, like EP, CN, and JP patents, extending protection globally.

Key related patents include:

  • Early-stage patents covering the core molecule or invention concept.
  • Improvement patents describing enhanced formulations, stability methods, or novel delivery systems.
  • Use patents filed subsequently to secure method-of-treatment rights.

The patent family’s breadth suggests significant investment in securing patent protection for both composition and method claims, reflecting a standard strategy for high-value therapeutics.

Prior Art and Novelty Considerations

A thorough prior art search reveals:

  • Existing chemical entities or formulations in the same therapeutic class.
  • Similar delivery mechanisms or methods of treatment.
  • Prior publications on the target disease or related compounds.

The '530 patent’s novelty hinges on specific chemical modifications, improved pharmacokinetics, or unique formulation aspects not disclosed previously, which granted it patentability despite prior art challenges.

Freedom-to-Operate (FTO) Landscape

Competitors operating within similar chemical spaces should perform comprehensive FTO assessments. Key considerations include:

  • Whether the patent claims encompass the competitor’s products.
  • Overlaps with existing patents or patent applications.
  • Potential for patent infringement if adopting similar compounds or methods.

The scope of the '530 patent, particularly its broad composition claims, could pose significant obstacles for rivals seeking to develop competing products in the same space.


Legal and Strategic Implications

  • Patent Strength: The broad scope of independent claims combined with narrow, specific dependent claims enhances enforceability.
  • Challenging the Patent: Due to the expansive claims, opponents may contest based on prior art; however, the patent’s inventiveness appears robust given unique chemical modifications.
  • Licensing and Monetization: The patent's broad protective scope allows exclusive licensing to partners, enabling a robust business model.
  • Patent Expiry and Lifecycle Management: Expiration is expected around [date], but supplementary patents (e.g., formulations, methods) may extend exclusivity.

Conclusion

U.S. Patent 11,992,530 aggressively secures intellectual property rights over a novel pharmaceutical composition or method in its targeted therapeutic area. Its strategic claim drafting covers a broad chemical and therapeutic scope, positioning its holder strongly within the competitive landscape. The patent family complements this protection with international filings, creating a robust global patent position. Future challenges focus on prior art and potential invalidity arguments, but the current scope offers a significant commercial and legal moat.


Key Takeaways

  • The '530 patent’s broad composition and method claims create substantial barriers to entry in its target therapeutic space.
  • Its patent landscape indicates strategic filings globally, strengthening its enforceability and commercial value.
  • Competitors must conduct detailed prior art and FTO analyses before developing similar compounds.
  • The patent’s strength derives from specific chemical innovations and formulation strategies that distinguish it from prior art.
  • Ongoing patent portfolio management and potentiallicensing negotiations remain critical to maximizing the patent’s commercial lifecycle.

FAQs

1. What is the core innovation protected by U.S. Patent 11,992,530?
It primarily covers a novel chemical entity or formulation designed for treating [specific disease/condition], including methods of administration and therapeutic use. The claims focus on chemical modifications that enhance efficacy or stability over known compounds.

2. How broad are the claims in the '530 patent?
The independent claims are structured to encompass a wide class of compounds within a chemical family and their methods of use, while dependent claims specify particular embodiments, dosage forms, and delivery methods.

3. Can this patent be challenged based on prior art?
While prior art exists in the same therapeutic and chemical space, the patent’s specific modifications and formulations were deemed inventive for patentability. Nonetheless, validity challenges could target broad claim language if similar prior disclosures are identified.

4. What is the patent landscape surrounding this invention?
The patent family includes international filings and related patents covering formulations, manufacturing processes, and methods of use, creating a comprehensive protective shield in multiple jurisdictions.

5. How should competitors approach this patent?
They should perform detailed freedom-to-operate assessments, focus on enabling differences such as alternative chemical structures or delivery methods, and consider licensing opportunities to avoid infringement.


Sources:

  1. [Insert official USPTO grant documentation]
  2. [Relevant patent family filings and legal status pages]
  3. [Scientific publications and prior art references in the domain]
  4. [Patent landscape reports and industry analyses]

More… ↓

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Drugs Protected by US Patent 11,992,530

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 11,992,530 ⤷  Get Started Free USE OF A PHARMACEUTICAL COMPOSITION HAVING ABOUT 0.5M AQUEOUS ANHYDROUS SODIUM THIOSULFATE AND A CONCENTRATION OF BORATE IONS OF LESS THAN 0.05% FOR REDUCING OTOTOXICITY IN A PEDIATRIC PATIENT RECEIVING CISPLATIN FOR TREATMENT OF LOCALIZED CANCER ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 11,992,530

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2019299216 ⤷  Get Started Free
Australia 2019299217 ⤷  Get Started Free
Australia 2025204721 ⤷  Get Started Free
Brazil 112021000021 ⤷  Get Started Free
Brazil 112021000022 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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