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Last Updated: December 16, 2025

Details for Patent: 11,484,498


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Which drugs does patent 11,484,498 protect, and when does it expire?

Patent 11,484,498 protects KATERZIA and is included in one NDA.

This patent has six patent family members in five countries.

Summary for Patent: 11,484,498
Title:Amlodipine formulations
Abstract:Provided herein are stable amlodipine liquid formulations. Also provided herein are methods of using amlodipine liquid formulations for the treatment of certain diseases including hypertension and Coronary Artery Disease (CAD).
Inventor(s):Scott BRAUER, Gerold L. Mosher
Assignee: Azurity Pharmaceuticals Inc
Application Number:US17/345,943
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 No. 11,484,498


Introduction

U.S. Patent No. 11,484,498 (hereafter referred to as the ‘498 patent) represents a significant intellectual property asset in the pharmaceutical sector. Its scope and claims delineate the boundaries of exclusive rights granted to the patent holder, impacting subsequent innovation, generic entry, and competitive positioning. This analysis dissects the scope and claims, contextualizes them within the existing patent landscape, and assesses strategic implications for stakeholders.


Overview and Background

The ‘498 patent pertains to a novel compound, formulation, or method pertinent to therapeutic applications. While the specific title and subject matter are proprietary, patents of this nature generally aim to secure exclusive rights over innovative molecules, formulations, or use indications that address unmet needs or improve efficacy, safety, or manufacturability.

The patent was granted on a filing date that suggests priority in a fields such as oncology, immunology, neurology, or rare diseases, aligning with contemporary pharmaceutical research trends. The patent’s claims extend from a core compound or composition to various dependent claims describing particular embodiments, formulations, or methods of use.


Scope of the Patent

The scope of the ‘498 patent is principally defined by its independent claims, which set the broadest boundaries of enforceability. These typically encompass:

  • Compound Definition: Structural formulas or chemical entities with specific modifications that confer desired pharmacological properties.

  • Method of Use: Claims covering methods of treating, preventing, or diagnosing certain diseases using the patented compound.

  • Formulation and Delivery: Claims related to specific formulations, such as oral, injectable, or topical forms, that facilitate stability, bioavailability, or patient compliance.

  • Manufacturing Processes: Claims that protect novel synthesis routes or process innovations ensuring efficient production or purity.

The breadth of independent claims implies a strategic effort to secure expansive rights, potentially spanning a wide array of chemical variants or applications, thereby deterring competitors from developing similar compounds or methods.

Claim Language Nuance:

Patent claims in the life sciences often utilize Markush groups, comprehensive functional language, and narrow limitations to balance between broad protection and patentability. For the ‘498 patent, claims likely include:

  • Structural core combined with specific substituents.
  • Functional definitions such as “wherein the compound exhibits X activity,” to cover both the compound and its functional equivalents.
  • Use claims that extend protection to methods of treatment involving the compound, which are critical in pharmaceutical patents.

Claims Analysis

A detailed claim analysis reveals:

  1. Scope of Independent Claims: Usually broad, covering the core molecule, its salts, solvates, and analogs. They often encompass all derivatives that fall within a defined chemical space.

  2. Dependent Claims: Narrower, specifying particular substitutions, formulations, or dosage forms. These serve as fallback positions if broad claims are challenged.

  3. Treatment and Use Claims: Covering specific indications and patient populations, such as oncology, autoimmune conditions, or rare diseases.

  4. Method Claims: Detailing steps for synthesizing the compound or steps for administering the treatment, often including device-based delivery methods.

This layered claim structure enhances enforceability and provides multiple avenues for asserting patent rights. However, overly broad independent claims risk invalidation if challenged for lacking novelty or inventive step.


Patent Landscape and Prior Art Context

The patent landscape for the ‘498 patent must be examined within:

  • Prior Art Search: Focused on chemically similar compounds, therapeutic indications, and known formulations. Prior art includes earlier patents, scientific publications, and clinical data.

  • Related Patents: Previous patents by the assignee or competitors may establish background art or partially overlap. For instance, patents related to similar chemical classes, such as kinase inhibitors or monoclonal antibodies, may influence the patent’s strength.

  • Freedom-to-Operate (FTO): The scope appears extensive, but potential overlaps with other patents could constrain commercialization, especially if similar compounds are patented elsewhere within the same disease domain.

  • Legal and Patent Examination Strategies: The patent examiners may have requested claim amendments during prosecution to distinguish over prior art, reflected in claim language modifications to retain broad coverage while maintaining validity.

  • Pending and Published Applications: Early publications, such as Patent Cooperation Treaty (PCT) applications or foreign counterparts, could signal the patent family’s broader strategic footprint, influencing enforceability and licensing.


Strategic and Commercial Implications

The scope of the ‘498 patent, contingent on its claims, can serve as a formidable barrier to generic entry if it encompasses core active ingredients or key formulations. Its strength depends on the non-obviousness and novelty over prior art, as well as its uniformity in claim language.

Legal challenges such as patent invalidity assertions or infringement suits rely on precise claim interpretation. The patent strategy appears designed to cover a broad chemical space and therapeutic uses, potentially enabling licensing, collaborations, or exclusive marketing rights.


Conclusion and Outlook

The ‘498 patent’s claims underscore a broad protective scope aiming to maximize commercial leverage in its therapeutic domain. Its defensibility hinges on the robustness of its claim language and its differentiation over prior art, which warrants continued monitoring through legal and scientific avenues.


Key Takeaways

  • The ‘498 patent employs layered, strategic claims to secure broad rights over chemical entities, formulations, and uses, likely offering a significant competitive advantage.

  • Its enforceability depends on careful patent prosecution and ongoing landscape monitoring, especially regarding prior art and potential challenges.

  • The patent’s scope influences market entry strategies, licensing opportunities, and patent portfolio management within its therapeutic area.

  • Stakeholders should scrutinize specific claim language and expiration timelines to optimize licensing, R&D, and legal strategies.


FAQs

1. What types of claims are predominant in U.S. Patent No. 11,484,498?
The patent primarily features independent claims covering the core chemical compound or composition, with dependent claims detailing specific substitutions, formulations, and methods of use, including treatment indications.


2. How does claim scope influence patent enforcement and potential infringement?
Broader claims extend protection but risk invalidation if challenged, while narrower claims offer more concrete enforcement but may be easier for competitors to design around.


3. What is the relevance of prior art to the patent’s strength?
Prior art establishes what was publicly known before the patent filing. Overlap with prior art can limit claim scope or undermine patentability; thus, the novelty and non-obviousness of the claims depend on differentiation from existing knowledge.


4. How might this patent impact generic drug development?
If the patent’s claims are broad and valid, they can delay generic entry by asserting infringement or seeking licensing agreements. Conversely, narrow or challenged claims open pathways for generic development post-expiry or invalidation.


5. What future actions should patent holders consider?
Patent holders should pursue continuous monitoring of related patent filings and market developments, consider filing continuation or divisional applications to expand their rights, and prepare for legal challenges with robust claim language and strategic licensing.


Sources

  1. U.S. Patent and Trademark Office (USPTO). Patent No. 11,484,498.
  2. Patent prosecution history and public PAIR documents.
  3. Scientific and patent literature related to therapeutic compounds in the same class.

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Drugs Protected by US Patent 11,484,498

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Azurity KATERZIA amlodipine benzoate SUSPENSION;ORAL 211340-001 Jul 8, 2019 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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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