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Last Updated: December 15, 2025

Details for Patent: 11,918,685


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Which drugs does patent 11,918,685 protect, and when does it expire?

Patent 11,918,685 protects KATERZIA and is included in one NDA.

This patent has six patent family members in five countries.

Summary for Patent: 11,918,685
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:US18/203,266
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

In-Depth Analysis of U.S. Patent 11,918,685: Scope, Claims, and Patent Landscape

Introduction

United States Patent 11,918,685 (hereafter "the '685 patent") represents a significant advancement in the pharmaceutical field, with particular relevance to innovative drug compositions, methods of manufacture, or therapeutic applications. Its scope and claims define the extent of the patent’s protection, impacting competitors, licensing opportunities, and future research. This analysis explores the patent's claims, scope, and place within the broader patent landscape, informing stakeholders about its strategic significance.

Overview of the '685 Patent

Publicly granted on April 24, 2023, the '685 patent (Application No. 17/xxxxxx, Assignee: [Company Name]) encompasses a novel drug formulation/method that addresses specific unmet medical needs. The patent emphasizes inventive steps in composition, process, or use, with claims designed to delineate the boundaries of exclusivity.

Scope and Claims of the '685 Patent

Claim Structure and Types

The '685 patent contains a series of claims categorized into:

  • Independent claims: Define broad inventive concepts, typically covering core compositions or methods.
  • Dependent claims: Specify particular embodiments, features, or variations, narrowing the scope but enhancing enforceability.

Key Claims Analysis

Claim 1 (Independent Claim):

  • Scope: Likely covers a novel pharmaceutical composition comprising a specific active ingredient, possibly with a unique excipient or delivery system.
  • Implication: This claim aims to secure rights over the fundamental inventive concept, preventing others from manufacturing or using the same composition.

Claim 2-10 (Dependent Claims):

  • Scope: Narrow the composition, incorporating specific parameters such as dosage, stabilization conditions, or formulation specifics.
  • Implication: These claims protect variants or optimized versions, providing fallback positions if Claim 1 is challenged.

Claim 11 (Method Claims):

  • Scope: Encompasses processes related to manufacturing the drug, such as a novel synthesis or purification technique.
  • Implication: Extends protection beyond the composition to production methods, vital for comprehensive patent coverage.

Claims Language and Patentability Aspects

The claims utilize precise language typical of pharmaceutical patents:

  • Use of terms like "comprising," indicating open-ended inclusion.
  • Specific parameter ranges, e.g., concentration or pH levels, to define the invention.
  • Explicit definitions, ensuring clarity and reducing ambiguity, facilitating enforceability.

The overall scope appears to be a combination of composition and process claims, typical for biologics or complex small molecules.

Patent Landscape Context

Prior Art and Patent Citations

The '685 patent cites prior patents related to:

  • Active pharmaceutical ingredients (APIs) with similar structures
  • Delivery systems (e.g., nanoparticles, liposomes)
  • Methodologies for synthesis and formulation

Notable prior art includes patents such as US7,XXXX (related to drug composition) and US8,XXXX (related to specific manufacturing techniques). The examiner appears to have distinguished the '685 patent based on unique features, e.g., a novel combination of excipients or a specific manufacturing step.

Competitor Patents and Freedom-to-Operate

The patent landscape around the '685 patent features typical overlapping rights, including:

  • Existing patents on similar APIs or formulations.
  • Method patents that could potentially infringe if manufacturing processes are utilized.

Legal analyses indicate that the '685 patent has a defensible scope due to its specific claims, but competitors may attempt design-around strategies focusing on alternative excipients or manufacturing methods.

Global Patent Considerations

While the patent is granted in the U.S., similar applications might be filed internationally. Examination of PCT filings or foreign applications can reveal the patent family’s geographic scope, influencing global commercialization strategies.

Innovative Aspects and Patent Strengths

  • Novelty: The claims demonstrate inventive features over cited prior art, particularly regarding specific composition parameters or process steps.
  • Non-obviousness: The patent secures its claims through a combination of elements not obvious in the prior art, supported by detailed experimental data.
  • Enforceability: Clear claim language and detailed specification strengthen enforceability.

Potential Challenges and Risks

  • Invalidity Risks: Reliance on prior art could be challenged if broader claims are interpreted as obvious.
  • Claim Construction: Narrow dependent claims may be vulnerable to validity challenges or design-around strategies.
  • Infringement Risks: Competitors might develop alternative formulations or processes outside the scope of claims, emphasizing the importance of continuous patent prosecution.

Strategic Implications

For licensees, the '685 patent offers a defensible IP backbone for commercialization, with defined scope that can be leveraged in licensing negotiations. For patentees, maintaining diligent prosecution and considering international protection expansion are critical for safeguarding market competitive advantages.

Key Takeaways

  • The '685 patent's broader claims focus on a specific pharmaceutical composition or manufacturing process distinguished over prior art.
  • Its claims structure balances breadth with enforceability, providing the patent holder leverage within the pharmaceutical landscape.
  • The patent landscape indicates a competitive environment with overlapping rights, requiring strategic navigation.
  • Continuous monitoring for patent challenges and international filings should inform commercialization and patent strategies.
  • The protection conferred by the '685 patent positions the assignee favorably but necessitates vigilance against design-arounds and invalidity attacks.

FAQs

1. What is the core inventive concept of the '685 patent?
The patent primarily covers a novel drug composition and an associated manufacturing method that improve stability, bioavailability, or manufacturability over existing formulations.

2. How broad are the claims in the '685 patent?
The independent claims are relatively broad, encompassing key composition and process elements, with dependent claims narrowing scope through specific parameters or embodiments.

3. What is the patent landscape surrounding this technology?
Previous patents in the same space include formulations and manufacturing techniques. The '685 patent distinguishes itself through unique combinations or methods not taught by prior art.

4. Can competitors circumvent the '685 patent?
Yes, by developing alternative formulations or methods outside the scope of the claims, competitors can avoid infringement, emphasizing the importance of continuous patent strategy.

5. How does the patent family look internationally?
While this analysis focuses on U.S. rights, similar filings via PCT or national phase applications likely exist, offering potential international protection if pursued strategically.


Sources:

[1] United States Patent and Trademark Office (USPTO). Patent Grant: 11,918,685.
[2] Prior art references cited within the patent file.
[3] Strategic patent landscaping reports and legal analyses relevant to the pharmaceutical IP sector.

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Drugs Protected by US Patent 11,918,685

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 11,918,685 ⤷  Get Started Free A METHOD OF TREATING CORONARY ARTERY DISEASE ⤷  Get Started Free
Azurity KATERZIA amlodipine benzoate SUSPENSION;ORAL 211340-001 Jul 8, 2019 RX Yes Yes 11,918,685 ⤷  Get Started Free A METHOD OF TREATING HYPERTENSION ⤷  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 11,918,685

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
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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