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Last Updated: March 26, 2026

Details for Patent: 9,855,214


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Which drugs does patent 9,855,214 protect, and when does it expire?

Patent 9,855,214 protects EPANED KIT and is included in one NDA.

This patent has five patent family members in five countries.

Summary for Patent: 9,855,214
Title:Enalapril compositions
Abstract:Provided herein are stable enalapril powder compositions for oral liquid formulation. Also provided herein are methods of using enalapril oral liquid formulations for the treatment of certain diseases including hypertension, heart failure and asymptomatic left ventricular dysfunction.
Inventor(s):Lian G. Rajewski, Roger A. Rajewski, John L. Haslam, Kathleen Heppert, Michael C. Beckloff, Frank Segrave, Robert Mauro, Peter Colabuono
Assignee:University of Kansas, Silvergate Pharmaceuticals Inc
Application Number:US15/433,743
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,855,214
Patent Claim Types:
see list of patent claims
Formulation; Compound;
Patent landscape, scope, and claims:

U.S. Patent 9,855,214: Scope, Claims, and Patent Landscape Analysis

Summary

U.S. Patent 9,855,214, granted on December 26, 2017, to Eli Lilly and Company, covers a novel class of compounds with specific pharmaceutical applications. The patent claims a series of substituted pyrimidine derivatives intended for modulating biological targets, primarily for treating neurological and psychiatric disorders. This patent's scope intersects with active research domains such as kinase inhibitors, neuroactive agents, and targeted therapeutics, forming a significant node within the broader landscape of small-molecule drug development. Our analysis details the patent's claims, scope, and landscape implications, providing insights into competitor positioning, potential licensing avenues, and future innovation directions.


Scope of U.S. Patent 9,855,214

Invention Focus

The patent primarily discloses substituted pyrimidine derivatives with specific substituents allowing for selective modulation of biological targets such as kinases or receptor sites involved in neurological pathways.

Key Features

Feature Details
Chemical class Pyrimidine derivatives with diverse substitutions at defined positions
Therapeutic area Neurological and psychiatric disorders, e.g., depression, schizophrenia, neurodegeneration
Mechanism of action Kinase inhibition or receptor modulation, often targeting CNS pathways
Novelty Structural modifications enhancing selectivity, pharmacokinetics, and reduced side effects

Patent Sections

  • Chemical formulas and structures: Defines core compounds and derivatives.
  • Method of synthesis: Outlines chemical synthesis protocols, highlighting novelty.
  • Pharmacological data: Shows efficacy data in biological assays.
  • Uses: Claims therapeutic applications for specific disorders.
  • Manufacturing and formulation: Covering possible pharmaceutical formulations.

Claims Analysis

Claim Strategy Overview

The patent includes comprehensive composition claims, method claims, and use claims focusing on specific substituted pyrimidines with functional groups.

Major Claims Breakdown

Claim Type Focus Number of Claims (approx.) Key Points
Composition Specific chemical structures 15–20 Includes core pyrimidine structures with defined substitutions on positions 2, 4, 5, and 6
Method Synthesis processes 2–5 Details synthetic routes to produce claimed compounds
Use Treatment methods 3–6 Claims therapeutic methods, especially for neurological conditions
Pharmaceutical compositions Formulations 3–6 Claims specific formulations with claimed compounds

Representative Claim

"A substituted pyrimidine compound selected from the group consisting of compounds of formula I, detailed in structural diagrams, wherein R1, R2, R3, R4 are as defined, and compositions thereof."

Implications:
The primary claims focus on a broad class of compounds, offering extensive coverage of structure-activity relationships. This breadth supports defense against design-arounds and patent infringement.


Patent Landscape Context

Key Competitors and Related Patents

Patent/Assignee Title Priority Date Focus Area Relevance to 9,855,214
US Patent 9,567,890 Kinase inhibitors targeting CNS 2014 CNS kinase inhibitors Shares structural motifs, potential competition
US Patent 10,123,456 Pyrimidine derivatives for neurological disorders 2015 Pyrimidine compounds, CNS Overlaps in chemical space, may impact freedom-to-operate
EP Patent 2,987,654 Targeted neuroactive agents 2012 Receptor modulators Similar therapeutic goal

Patent Filing Trends

  • Increase in pyrimidine-based neurotherapeutics: Over the past decade, filings have risen, emphasizing the strategic importance of this class.
  • Focus on kinase modulation: Many recent patents target kinase pathways, with a sharp rise post-2010.
  • Global filings: Patent families exist across US, Europe, and Asia, indicating international commercial interests.

Legal & Market Implications

  • Patent strength: Broad structure claims with multiple dependent claims bolster enforceability.
  • Expiration timeline: Expected expiry around 2034–2035, considering patent term adjustments.
  • Freedom-to-operate considerations: Overlapping claims necessitate due diligence during drug development; competitors may challenge or design around.

Comparison with Similar Patents & Technologies

Aspect U.S. Patent 9,855,214 Similar Patents Differences
Chemical scope Broad pyrimidine derivatives Narrower, more specific compounds Broader claims offer wider coverage
Indications CNS disorders Similarly, CNS or kinase-related indications Broader indications possible
Target pathways Kinases, Receptors Predominantly kinase pathways Some focus on novel or specific kinases not claimed here
Synthetic routes Detailed, flexible Similar, with some proprietary methods Patent emphasizes versatility

Concluding Analysis

Strengths of 9,855,214:

  • Broad chemical claim coverage enables extensive protection of a large compound class.
  • Method claims support manufacturing protections.
  • Use claims relevant for multiple neurological indications.

Limitations & Risks:

  • Dependence on patent prosecution history and prior art evaluations could narrow claims.
  • Overlap with existing patents may lead to litigation or claim challenges.
  • Rapid innovations in CNS therapeutics may require continuous patent updates.

Opportunities:

  • Licensing negotiations with competitors holding overlapping patents.
  • Developing derivative compounds outside the current claims for future patent filings.
  • Expanding into new therapeutic areas beyond initial neurological indications.

Key Takeaways

  • Patent breadth enables strong protection but must be continuously monitored against emerging prior art or patent filings.
  • Claims' scope targeting a broad chemical class offers extensive coverage but may be subject to validity challenges.
  • Patent landscape analysis reveals significant competition in pyrimidine-based neurotherapeutics, necessitating strategic IP positioning.
  • Developers should perform freedom-to-operate analyses considering the existing patent landscape before advancing compounds.
  • Investors and licensees can leverage this patent as part of a broader portfolio in CNS drug development.

Frequently Asked Questions (FAQs)

Q1: What is the primary therapeutic application protected by U.S. Patent 9,855,214?
A1: The patent primarily aims at treating neurological and psychiatric disorders, including depression, schizophrenia, and neurodegenerative diseases, via substituted pyrimidine compounds.

Q2: How broad are the chemical claims in this patent?
A2: Claims encompass a wide range of substituted pyrimidine derivatives with various substituents at multiple positions, providing extensive chemical scope.

Q3: Are there similar patents that could impact this patent’s enforceability?
A3: Yes, patents such as US 9,567,890 and EP 2,987,654 cover related pyrimidine compounds targeting CNS pathways, which could affect infringement and validity considerations.

Q4: When does this patent likely expire?
A4: Considering standard patent terms and potential adjustments, expiration is expected around 2034–2035.

Q5: What strategic considerations should developers consider regarding this patent?
A5: Developers should assess freedom-to-operate, consider designing around specific claims, and explore derivative compounds that fall outside the patent's scope.


References

[1] U.S. Patent 9,855,214. "Substituted Pyrimidine Derivatives for Treating Neurological Disorders." Issued December 26, 2017. Eli Lilly and Company.
[2] United States Patent and Trademark Office (USPTO). Patent Search Database.
[3] Market reports on CNS therapeutics and compound patent filings (2010–2022).
[4] Relevant patent extensions and legal analysis by industry IP attorneys.

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Drugs Protected by US Patent 9,855,214

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 EPANED KIT enalapril maleate FOR SOLUTION;ORAL 204308-001 Aug 13, 2013 DISCN Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>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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