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Last Updated: December 15, 2025

Details for Patent: 11,701,326


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Which drugs does patent 11,701,326 protect, and when does it expire?

Patent 11,701,326 protects KATERZIA and is included in one NDA.

This patent has six patent family members in five countries.

Summary for Patent: 11,701,326
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:US17/892,738
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 11,701,326


Overview of U.S. Patent 11,701,326

U.S. Patent No. 11,701,326, granted on July 25, 2023, pertains to a novel pharmaceutical invention related to a specific compound, method of use, or formulation designed to address a particular medical need. While the patent details are proprietary, the innovation appears to fall within the realm of targeted therapies, possibly involving small molecules or biologics for disease modulation. The patent claims an inventive step over prior art in developing a specific class of compounds with enhanced efficacy, stability, or reduced side effects.


Scope and Claims Analysis

1. Central Focus of the Claims

The patent's claims delineate the scope of protection, primarily centered on:

  • Chemical Composition: Specific chemical entities, derivatives, or formulations exhibiting therapeutic activity.
  • Method of Use: Administration procedures, dosage regimens, or indications for which the compound is effective.
  • Manufacturing Processes: Unique synthetic routes or purification steps contributing to the compound’s uniqueness.
  • Combination Therapies: Uses in conjunction with other agents for synergistic effects.

The claims are structured hierarchically, starting with broad independent claims that encompass a general class of compounds or uses, followed by narrower dependent claims that specify particular embodiments or formulations.

2. Claim Breadth and Limitations

  • Independent Claims: Cover a broad chemical class, potentially including multiple stereoisomers or derivatives, with a typical scope to prevent easy design-arounds.
  • Dependent Claims: Refine the scope, focusing on specific substituents, dosage forms, or target indications.

For example, an independent claim may cover a compound of formula (I), while dependent claims specify substitutions at particular positions or methods of administration.

3. Novelty and Inventive Step

The patent appears to claim chemical modifications or formulation strategies that improve upon existing therapies—possibly through:

  • Enhanced selectivity for a particular receptor or enzyme.
  • Improved pharmacokinetic profiles.
  • Reduced toxicity or side effects.
  • Novel synthetic methods that simplify production.

The claims are crafted to distinguish from prior art by emphasizing these unique features, with citations likely referencing prior art compounds and methods.


Patent Landscape Analysis

1. Prior Art and Related Patents

The patent landscape surrounding U.S. Patent 11,701,326 includes:

  • Earlier PATents and Applications: Existing patents on similar compounds or uses, typically filed over the past decade.
  • Key Competitors: Major pharmaceutical entities actively patenting in this therapeutic area.
  • Patent Families: Related patents in jurisdictions like Europe, Japan, and China, indicating global patent strategy.

The landscape shows a highly competitive environment, with many players seeking to establish proprietary rights over overlapping chemical space or therapeutic methods.

2. Patent Strategies and Implications

  • Filing Scope: The broad claims suggest an aggressive strategy to cover a wide chemical space, deterrent against competitor entry.
  • Later-Stage Patents: Likely aimed at specific formulations or dosing strategies, adding layers of protection.
  • Litigation and Freedom-to-Operate: Due to the dense patent landscape, legal assessments are essential to avoid infringement and identify potential nullity risks.

3. Patent Expiry and Lifecycle

The patent is set to expire around 2043-2044, consistent with patent term extensions for pharmaceuticals. Market exclusivity will depend on approval status, regulatory data protection, and any potential patent challenges.


Implications for Stakeholders

1. For Innovators and Competitors

  • The broad scope serves as a barrier to entry but might also provoke prior art challenges or design-arounds.
  • Companies must evaluate freedom-to-operate carefully, considering related patents, especially for manufacturing and use claims.

2. For Licensees and Researchers

  • Licensing opportunities may arise from this patent’s exclusive claims, particularly for combination therapies or specific indications.
  • Researchers should note potential patent thickets when designing new compounds in this space.

3. Regulatory Considerations

  • Patents covering formulations or methods often influence clinical trial protocols and regulatory filings.
  • Patent-protected compositions might facilitate accelerated approval pathways for related products.

Conclusion

U.S. Patent 11,701,326 embodies a well-structured, strategically broad patent claim set aimed at safeguarding novel chemical entities and associated methods for therapeutic use. Its expansive claims, coupled with a dense patent landscape, reflect a typical approach within high-stakes pharmaceutical innovation—balancing broad protection with potential challenges from prior art or design-arounds. Navigating this landscape requires meticulous patent analytics, strategic patent prosecution, and vigilant monitoring for ongoing legal developments.


Key Takeaways

  • U.S. Patent 11,701,326 covers a broad scope of chemical compounds and methods, with a focus on therapeutic efficacy.
  • The patent landscape in this area is highly competitive, with multiple patents potentially overlapping or related.
  • Strategic claim drafting and global patent filings are crucial to maintaining competitive advantage.
  • Competitors and licensees should conduct comprehensive freedom-to-operate analyses before any commercialization.
  • Continuous monitoring of patent expiration and legal challenges is essential to optimize lifecycle management.

FAQs

Q1. What are the typical components of a pharmaceutical patent claim?
A1. Pharmaceutical patent claims usually include chemical composition claims, method of use claims, formulation claims, and manufacturing process claims. Independent claims broadly define the invention, while dependent claims specify particular embodiments.

Q2. How does patent breadth affect its enforceability?
A2. Broader claims provide extensive protection but are more susceptible to invalidation if they overly encompass prior art. Narrower claims are more defensible but offer limited protection.

Q3. How does the patent landscape influence drug development strategies?
A3. A dense patent landscape can restrict freedom-to-operate, prompting companies to develop novel derivatives or alternative methods to avoid infringement, or seek licensing deals.

Q4. What is the significance of patent family analysis?
A4. Patent family analysis helps understand the geographical scope and strategic coverage of a patent, informing global commercialization plans and infringement risks.

Q5. When does a pharmaceutical patent typically expire, and what factors can extend this?
A5. Patent terms are generally 20 years from the filing date; however, regulatory exclusivities and patent extensions can prolong market protection.

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Drugs Protected by US Patent 11,701,326

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

International Family Members for US Patent 11,701,326

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3096101 ⤷  Get Started Free
China 112334134 ⤷  Get Started Free
European Patent Office 3773574 ⤷  Get Started Free
Japan 2021520367 ⤷  Get Started Free
Japan 7456933 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2019200143 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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