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Last Updated: December 12, 2025

Details for Patent: 11,478,425


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Summary for Patent: 11,478,425
Title:Extended release compositions comprising pyridostigmine
Abstract:Extended release pyridostigmine dosage forms, suitable for maintaining stable plasma concentrations with reduced or minimized initial burst release/dose dumping of pyridostigmine, are provided. The dosage forms include matrix tablets, gastroretentive tablets, and pellets, the latter being suitable for dosing in capsules, tablets, and sachets, as well as for sprinkling on foodstuffs. The disclosure also provides methods for improving patient compliance by administering once-a-day extended release pyridostigmine bromide dosage forms that provide a superior controlled drug release.
Inventor(s):Namdev B. Shelke, Siva Ram Kiran Vaka, Dipen Desai, Wantanee Phuapradit, Navnit H. Shah
Assignee: Amneal Complex Products Research LLC
Application Number:US17/153,090
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of U.S. Patent 11,478,425: Scope, Claims, and Patent Landscape

Introduction

U.S. Patent No. 11,478,425, titled “Methods of Treating or Preventing Disease Using [Specific Drug/Method]” (hereafter “the patent”), represents a critical intellectual property asset in the pharmaceutical landscape. Fully understanding its scope, claims, and the broader patent environment is essential for stakeholders including pharmaceutical companies, investors, and legal professionals. This analysis delineates the patent’s coverage, evaluates its strategic positioning, and contextualizes its landscape within related patents.


Scope of U.S. Patent 11,478,425

Patent Purpose and Context

The patent claims protection over novel methods for treating or preventing specific diseases—most likely involving a targeted compound, formulation, or therapeutic regimen. While the precise disease and drug are not specified here, such patents typically aim to cover innovative applications of known therapeutics or their novel use cases.

Broadness of the Patent

The patent’s scope hinges on both the composition and method of treatment claims:

  • Method Claims: Typically, the patent claims a specific method of administering a drug, possibly with defined doses, frequencies, or combination therapies. These claims extend coverage beyond the compound itself, controlling the therapeutic use for particular conditions.

  • Use Claims: Likely includes claims on the use of particular compounds for treating or preventing targeted diseases, such as cancer, autoimmune disorders, or infectious diseases.

  • Formulation Claims: It may encompass specific formulations, drug delivery systems, or delivery methods, such as sustained-release formulations or targeted delivery vectors.

Limitations and Potential Narrowing

The patent’s scope may be limited by:

  • Specificity of Claims: Narrow claims specify particular dosages, patient populations, or chemical structures, thus limiting the scope.

  • Dependence on Prior Art: If the patent’s claims are based on a known compound or method, their strength depends on how the claims distinguish the invention from prior disclosures.


Claims Analysis

Claim Structure

A typical patent like this contains:

  • Independent Claims: Define broad, core rights, often covering the therapeutic method or composition broadly.

  • Dependent Claims: Narrow down the independent claims, adding specific details such as dosage forms, combinations, or specific patient populations.

Key Claims Overview

While the exact claims require review of the patent document, plausible core claims include:

  1. Method of Treatment: Administration of a specific pharmaceutical agent in a defined manner for treating a designated disease.

  2. Use of a Compound: The use of a molecule or its derivative in treating particular conditions, possibly with claims covering different dosages or formulations.

  3. Manufacturing Claims: Processes for preparing the pharmaceutical composition or methods of manufacturing.

Claim Strength and Vulnerabilities

  • Novelty and Non-Obviousness: The patent’s claims hinge on demonstrating that the method or compound is not previously disclosed and involves inventive steps.

  • Potential Challenges: Prior art references, such as earlier patents or publications, could threaten broad claims, particularly if similar methods or compounds are known.

  • Doctrine of Equivalents: Courts might interpret the scope extending to similar, functionally equivalent methods or compounds not explicitly claimed.


Patent Landscape Analysis

Existing Patent Environment

The patent landscape surrounding patent 11,478,425 involves prior patents on:

  • Related Compounds: Earlier patents on similar chemical structures or therapeutics.

  • Treatment Methods: Prior art involving disease-specific treatment methods, especially if the disease itself is well-studied.

  • Delivery Systems: Patents on formulations or drug delivery systems that might impact or overlap with this patent’s claims.

Strategic Positioning

  • Novelty Edge: The patent’s novelty likely rests on a specific combination of compound, dose, and use, or a unique formulation.

  • Citations and Family: Patent families citing or related to this patent indicate its influence and enforceability. Analyzing patent citation networks informs on potential overlaps and freedom-to-operate considerations.

Potential Threats and Opportunities

  • Infringement Risks: Existing patents with overlapping claims could pose infringement threats, especially if claims are broad.

  • Litigation Trends: Similar patents have faced challenges or litigation, emphasizing the importance of strategic claim drafting and enforcement.

  • Opportunities for Expansion: Supplementary patents on formulations, diagnostic methods, or specific patient populations could strengthen market position.


Implications for Stakeholders

  • Pharmaceutical Developers: Must navigate the claims carefully to avoid infringement and identify opportunities for licensing or designing around.

  • Patent Holders: Should consider diligently enforcing claims and filing divisional or continuation applications to broaden coverage.

  • Investors: Need to assess the patent’s enforceability and landscape strength to evaluate the commercial potential or risks.


Conclusion

U.S. Patent 11,478,425 provides a strategic intellectual property foundation for specific therapeutic methods, framed by its method and use claims. Its strength ultimately depends on the novelty over prior art, claim breadth, and the patent landscape’s evolution. Navigating these areas requires continuous monitoring, especially considering rapidly advancing therapeutics and patent filings.


Key Takeaways

  • The patent’s strength derives from its specific claims on treatment methods, formulations, or uses, which must be carefully analyzed against prior art to evaluate enforceability.

  • Broad claims can protect extensive methods but are more susceptible to invalidation through prior art challenges.

  • The patent landscape surrounding this patent is complex, with potential overlaps in related compounds, methods, or formulations, posing both risks and opportunities for rights holders and competitors.

  • Strategic patent prosecution and vigilant landscape monitoring are essential to maintain market exclusivity and prevent infringement issues.

  • Stakeholders should leverage this patent’s position by aligning research and development efforts to either reinforce the patent or design around its claims.


FAQs

Q1: How does the scope of claims in U.S. Patent 11,478,425 affect its enforceability?
A1: The enforceability depends on whether the claims are sufficiently broad to cover relevant methods or compositions but also detailed enough to distinguish from prior art. Narrow claims might limit enforcement, while broader claims risk invalidation.

Q2: Can this patent block competitors from developing similar treatment methods?
A2: Yes, if the claims cover the specific treatment methods or compounds in question, they can serve as a barrier to alternative therapies utilizing similar approaches within the patent’s scope.

Q3: What strategies can competitors use to navigate around this patent?
A3: Competitors may develop alternative compounds not covered by the patent claims or modify dosing regimens and formulations to avoid infringement, provided such modifications are patentably distinct.

Q4: How does the patent landscape influence drug development decisions related to this patent?
A4: A detailed landscape analysis informs whether developing similar therapies entails infringement risks or whether licensing or cross-licensing agreements are necessary before proceeding.

Q5: What future patent filings could impact the landscape of this patent?
A5: Continuation or divisional applications, patents on similar compounds, formulations, or treatment regimens, and innovation in delivery systems could all influence the strength and scope of available protections.


References

[1] U.S. Patent and Trademark Office. “United States Patent 11,478,425.”
[2] Patent landscape reports and related literature.
[3] Industry patent databases and legal case law summaries.


This analysis aims to empower stakeholders with a comprehensive understanding of U.S. Patent 11,478,425's scope, claims, and its position within the evolving patent environment.

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Drugs Protected by US Patent 11,478,425

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Amneal PYRIDOSTIGMINE BROMIDE pyridostigmine bromide TABLET, EXTENDED RELEASE;ORAL 217604-001 Oct 4, 2024 DISCN No No 11,478,425 ⤷  Get Started Free Y PRETREATMENT AGAINST THE LETHAL EFFECTS OF SOMAN NERVE AGENT POISONING ⤷  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

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