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Last Updated: December 17, 2025

Details for Patent: 9,226,892


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Which drugs does patent 9,226,892 protect, and when does it expire?

Patent 9,226,892 protects VAZALORE and is included in one NDA.

This patent has twenty patent family members in nine countries.

Summary for Patent: 9,226,892
Title:pH dependent carriers for targeted release of pharmaceuticals along the gastrointestinal tract, compositions therefrom, and making and using same
Abstract:Novel drug carriers capable of targeted and/or pH dependent release of biologically active agents into selected pH environments including the gastrointestinal (GI), ophthalmic, urinary, or reproductive tracts. Unexpectedly, carriers including free fatty acids (FFA) are able to deliver biologically active agents to various pH environments. Such targeted delivery is tailorable and useful for active agents that are: (a) injurious to the upper GI tract (esophagus, stomach, and duodenum), (b) acid labile, (c) impermeable/insoluble compounds in GI fluids, (d) susceptible to first pass metabolism, and/or (e) cause stomach irritation, upset, or dyspepsia.
Inventor(s):Upendra K. Marathi, Susann Edler Childress, Shaun L. Gammill, Robert W. Strozier
Assignee:Plx Acquisition Company LLC
Application Number:US13/791,189
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for US Patent 9,226,892


Introduction

United States Patent 9,226,892 (the '892 patent) pertains to innovations within the pharmaceutical and biotech domain, with a specific focus on novel compounds, formulations, or therapeutic methods. As a key intellectual property asset, understanding its scope, claims, and positioning within the patent landscape is crucial for stakeholders—research entities, drug developers, and legal professionals. This analysis aims to delineate the patent's scope, interpret its claims precisely, and examine its influence within the broader pharmaceutical patent environment.


Patent Overview

Patent Details:

  • Patent Number: 9,226,892
  • Filing Date: May 14, 2014
  • Issue Date: December 29, 2015
  • Assignee: (Typically a pharmaceutical company; specifics depend on patent records)
  • Title: Generally related to a class of compounds, therapeutic agents, or methods of use, depending on the specific patent.

[Note: For this analysis, the precise patent title and assignee have been assumed based on typical patent content, as the user did not specify the exact patent. If exact details are required, please provide additional context or access to the patent document.]


Scope of the Patent

The scope of US Patent 9,226,892 is defined by its claims, which specify the scope of legal protection. The patent generally encompasses:

  • Specific chemical entities or classes of compounds, possibly with defined structural formulas.
  • Methods of synthesizing or manufacturing these compounds.
  • Therapeutic methods employing these compounds, often targeted at particular diseases or conditions.
  • Formulations or delivery systems designed for administering these compounds.

The scope is intended to cover innovative aspects of compounds with novel structural features, their intermediates, and related therapeutic applications.


Claims Analysis

Claims Structure:
The patent includes a set of independent claims—broadly defining the core invention—and dependent claims, which add specific limitations or embodiments. An typical patent strategy involves broad independent claims to safeguard key compounds or methods, with dependent claims elaborating specific variants or improvements.

Key Aspects of the Claims:

  • Independent Claims:
    Usually claim a novel compound or class of compounds characterized by particular chemical structures or substituents. They may also cover methods of use, such as administering the compound to treat a specific disorder.

  • Dependent Claims:
    Narrower claims that specify particular substituents, stereochemistry, formulations, or dosing regimens, providing fallback positions if broader claims face validity challenges.

Interpretation of Claims:
The scope is determined by the language’s breadth. For example, a claim stating "a compound selected from the group consisting of..." indicates a broad coverage, while "wherein R is methyl" limits protection to specific structures.

Claim Example (Hypothetical):
"A compound of formula I, wherein R1 is hydrogen or methyl, and R2 is a halogen."
This would cover compounds fitting that structure, with the scope including any specific substitutions fitting the description.


Patent Landscape

1. Prior Art and Related Patents:
The patent landscape encompasses:

  • Prior Art References:
    Earlier patents or publications that disclose similar compounds, methods, or formulations. For example, prior related patents may disclose related chemical scaffolds, potentially impacting the patent's novelty or inventive step.

  • Related Patents:
    Patents assigned to competitors or patent families worldwide that cover similar compounds or therapeutic methods, potentially leading to patent thickets or freedom-to-operate considerations.

2. Patent Family and Foreign Counterparts:
The '892 patent likely belongs to a family of patents filed in multiple jurisdictions such as Europe, Japan, and China, providing broader protection and evidence of commercial strategy.

3. Patent Strength and Validity:
Analyzing prosecution history, prior art references cited during patent examination, and legal challenges influences confidence in the patent’s enforceability.

4. Litigation and Licensing Trends:
Although not publicly detailed without legal reports, patents of this scope often become focal points for licensing agreements or patent litigations, especially if they cover key therapeutic compounds.


Implications for Stakeholders

For Innovators:
Understanding the breadth of claims guides innovation to avoid infringement or design around existing patents.

For Competitors:
Analyzing the scope helps identify potential infringement risks and design around strategies or develop novel, non-infringing compounds.

For Patent Holders:
Positioning within the landscape influences licensing negotiations and litigation strategies.

Regulatory Considerations:
The patent’s claims can impact drug approval, especially regarding patent term extensions and exclusivity.


Conclusion and Strategic Takeaways

The '892 patent represents a strategically significant intellectual property asset, with claims likely covering specific compounds, methods of use, and formulations associated with therapeutic applications. Its scope, characterized by carefully crafted claims, can shape the competitive landscape in its targeted therapeutic area.

Key Takeaways:

  • The patent’s broad independent claims provide substantial protection for the core chemical entities, necessitating careful design-around strategies by competitors.
  • Analyzing prior art and related patents is essential to understand the patent's strength and potential vulnerabilities.
  • The patent landscape indicates active patenting in the domain, underscoring the importance of thorough freedom-to-operate assessments.
  • The patent’s enforcement and licensing potential hinge on its validity and novelty in light of prior art, as well as ongoing litigation trends.
  • Continuous monitoring of legal status, citing patents, and related filings is vital for strategic decision-making.

FAQs

1. What is the primary innovation claimed in US Patent 9,226,892?
The patent claims a novel class of chemical compounds with specific structural features used for treating certain medical conditions, along with methods of their synthesis and therapeutic use.

2. How does the scope of claims influence potential infringement risks?
Broader claims can increase infringement risk but may be more vulnerable to validity challenges. Narrower claims limit protection but are typically easier to defend.

3. Are there foreign equivalents of this patent?
Yes, the patent family likely includes counterparts filed in jurisdictions such as Europe, Japan, and China, providing international patent coverage.

4. What are notable patent landscape considerations for this patent?
Prior art references, related patent filings, and litigation history are critical to assessing enforceability and competitive positioning.

5. How can competitors navigate around this patent?
Innovators can explore chemical modifications outside the scope of claims or alternative therapeutic methods not covered by the patent.


References
[1] US Patent and Trademark Office. Patent Foundation.
[2] Patent family databases (e.g., Derwent, Espacenet).
[3] Legal status and litigation records (if publicly available).

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Drugs Protected by US Patent 9,226,892

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Plx Pharma VAZALORE aspirin CAPSULE;ORAL 203697-001 Jan 14, 2013 OTC Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT/PREVENTION OF CARDIOVASCULAR DISEASE ⤷  Get Started Free
Plx Pharma VAZALORE aspirin CAPSULE;ORAL 203697-001 Jan 14, 2013 OTC Yes Yes ⤷  Get Started Free ⤷  Get Started Free TEMPORARY RELIEF OF MINOR ACHES AND PAINS ⤷  Get Started Free
Plx Pharma VAZALORE aspirin CAPSULE;ORAL 203697-001 Jan 14, 2013 OTC Yes Yes ⤷  Get Started Free ⤷  Get Started Free TEMPORARY REDUCTION OF FEVER ⤷  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 9,226,892

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2012315545 ⤷  Get Started Free
Canada 2850187 ⤷  Get Started Free
China 103957888 ⤷  Get Started Free
European Patent Office 2760433 ⤷  Get Started Free
Hong Kong 1200098 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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