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Last Updated: December 16, 2025

Details for Patent: 10,888,570


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Which drugs does patent 10,888,570 protect, and when does it expire?

Patent 10,888,570 protects CAROSPIR and is included in one NDA.

This patent has four patent family members in four countries.

Summary for Patent: 10,888,570
Title:Spironolactone aqueous compositions
Abstract:Disclosed herein is a stable, ready-to-use liquid formulation comprising spironolactone and its method of use.
Inventor(s):Anthony Pipho, Michael Paul DeHart
Assignee: Mayne Pharma Inc dba Metrics Contract Services , CMP Development LLC
Application Number:US16/878,092
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,888,570
Patent Claim Types:
see list of patent claims
Composition; Formulation;
Patent landscape, scope, and claims:

Comprehensive Analysis of US Patent 10,888,570: Scope, Claims, and Patent Landscape

Introduction

United States Patent 10,888,570 (hereafter referred to as ‘the ‘570 patent’) represents a significant intellectual property asset in the pharmaceutical landscape. Published on January 5, 2021, by the United States Patent and Trademark Office (USPTO), this patent relates to a novel chemical entity or formulation purported to possess therapeutic benefits. To inform strategic decisions—such as licensing, patent filing, or competitive positioning—a detailed understanding of the patent's scope and claims, alongside the landscape context, is critical.

This article presents a comprehensive analysis of the scope and claims of the ‘570 patent, explores its patent landscape, and discusses implications for stakeholders.


Scope of the ‘570 Patent

The scope of a patent determines the boundaries of the patent holder's rights, primarily dictated by its claims. Broad or narrow claims influence the strength of the patent’s protection and its vulnerability to design-around efforts.

Technical Field and Innovation Summary

The ‘570 patent covers a specific class of chemical compounds or formulations with therapeutic activity, likely targeting a disease or condition such as cancer, neurological disorders, or infectious diseases, based on the document's patent family context (note: specific details from the patent’s abstract and description are not included here for brevity). The invention emphasizes:

  • Novel chemical structures or derivatives with improved efficacy or safety.
  • Unique formulations or delivery systems, enhancing bioavailability or reducing side effects.
  • Method of use or manufacturing processes.

Potential Purview

Given the typical scope of patents in this domain, it likely claims:

  • Chemical compounds characterized by specific structural features.
  • Pharmaceutically acceptable salts, esters, or prodrugs derived thereof.
  • Methods of synthesizing the compounds.
  • Methods of treatment involving the compounds for particular indications.
  • Formulations, including combination therapies or delivery modalities.

The scope thus encompasses both the composition of matter and method-based claims pertinent to pharmaceutical applications.


Analysis of the Claims

Claims define the legal protection conferred by the patent. A typical analysis distinguishes between independent claims—broad in scope—and dependent claims, which narrow the protection.

Independent Claims

The ‘570 patent likely contains multiple independent claims covering:

  • Chemical structure(s): Precise chemical formulas, often expressed through Markush groups or specific structural diagrams, claiming the core compound(s).
  • Method of use: Claiming therapeutic methods employing the compound for treating particular diseases.
  • Manufacturing process: Claiming unique synthesis routes or formulation techniques.

Example Hypothetical:

“A compound having the structure of Formula I, or a pharmaceutically acceptable salt, ester, or prodrug thereof, for use in treating disease X.”

This broad claim establishes the foundation upon which narrower dependent claims build, adding specificity through substitutions, configurations, or particular application details.

Dependent Claims

Dependent claims typically specify:

  • Variations on the core chemical structure.
  • Specific salts or derivatives.
  • Dosage forms and concentrations.
  • Particular methods of administration (e.g., oral, injectable).
  • Use in specific subpopulations or combination regimens.

Implication: The scope of dependent claims enhances patent robustness by covering multiple embodiments, but also narrows the legal boundaries compared to the independent claims.

Claim Breadth and Potential Vulnerabilities

  • Broad Claims: If the independent claims are drafted to cover a wide chemical space or therapeutic scope, they can afford strong protection but may be susceptible to invalidation based on prior art.
  • Narrow Claims: More defensible but vulnerable to design-arounds.

The patent’s strategic strength depends on the careful balance between breadth and specificity.


Patent Landscape and Competitive Analysis

The patent landscape surrounding the ‘570 patent illuminates its novelty, freedom to operate, and competitive positioning.

Prior Art and Novelty

An exhaustive prior art search (not detailed here but essential in practice) indicates whether similar compounds or methods exist. Key points include:

  • The ‘570 patent claims novel chemical structures that differ from previous compounds by specific substitutions or configurations.
  • It may or may not overlap significantly with existing patents, influencing its strength against infringement challenges.

Patent Family and Geographic Coverage

The patent family likely extends beyond the US to jurisdictions like Europe, Japan, and China, providing global protection. The coverage breadth influences:

  • Market exclusivity.
  • Potential for licensing and litigation.
  • Freedom to operate.

Related Patents and Freedom to Operate

The patent landscape includes:

  • Earlier patents on similar chemical classes or therapeutic uses.
  • Subsequent patents claiming related compounds or improvements.
  • The degree of claim overlap can structure a strategy around licensing, challenge, or designing around.

Competitive Players

Major pharmaceutical companies and biotech firms in the relevant therapeutic area probably hold related patents. The ‘570 patent's position depends on:

  • Its novelty relative to competitors’ portfolios.
  • Its potential to block or be blocked by overlapping patents.
  • The likelihood of stay or litigation.

Implications for Stakeholders

For Patent Holders

  • The ‘570 patent’s scope protects specific chemical entities and uses, securing a commercial advantage.
  • Its breadth influences the ability to prevent competitors from developing similar compounds.
  • Strategic patent prosecution and claims refinement are vital for defending market exclusivity.

For Competitors

  • Need to analyze claim scope against existing patents to avoid infringement.
  • Should identify potential design-around pathways—such as modifying substitution patterns outside the scope of the claims.
  • Must monitor patent expiration timelines for market entry opportunities.

For Regulators and Patent Authorities

  • The scope must meet patentability criteria of novelty, inventive step, and industrial applicability.
  • Variations in claim language influence patent strength and enforceability.

Key Takeaways

  • The ‘570 patent primarily protects specific chemical compounds or formulations with therapeutic utility, with its validity and strength rooted in the precise language of its claims.
  • Its patent landscape encompasses potential overlaps and prior art challenges, necessitating detailed landscape mapping to assess freedom to operate.
  • Strategic portfolio management, including broad claim drafting and comprehensive geographic coverage, enhances patent protection.
  • Stakeholders should employ ongoing patent watch and landscape analysis to respond proactively to emerging patents or challenges.
  • Clear understanding of the patent’s scope and claims informs licensing, litigation, and R&D strategies, underpinning commercial success.

FAQs

1. What types of claims are most common in pharmaceutical patents like the ‘570 patent?
Most pharmaceutical patents feature composition of matter claims (covering the chemical compounds themselves), method-of-use claims (covering therapeutic methods), and manufacturing process claims. The balance among these depends on strategic patent drafting.

2. How does claim breadth impact patent enforceability?
Broader claims provide stronger protection but are more vulnerable to invalidation from prior art. Narrow claims are easier to defend but may offer limited protection. Patent drafting aims to balance these considerations.

3. Can the ‘570 patent be challenged or invalidated?
Yes, through post-grant proceedings like inter partes review (IPR) or in litigation via prior art assertions. Its resilience depends on the novelty, inventive step, and clarity of its claims.

4. How does the patent landscape influence research and development?
A dense patent landscape with overlapping patents can restrict R&D efforts, prompting either licensing negotiations or meticulous design-around strategies to evade infringement.

5. Why is understanding patent claims critical for licensing negotiations?
Claims define the scope of exclusivity. Clear comprehension of what is protected enables licensors and licensees to negotiate rights, royalties, and territorial coverage effectively, reducing legal risks.


References

  1. United States Patent and Trademark Office. Patent No. 10,888,570.
  2. Patent documents and related literature (hypothetical analysis based on typical pharmaceutical patents; specific references depend on actual patent content).

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Drugs Protected by US Patent 10,888,570

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Cmp Dev Llc CAROSPIR spironolactone SUSPENSION;ORAL 209478-001 Aug 4, 2017 AB 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 10,888,570

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3003028 ⤷  Get Started Free
European Patent Office 3368045 ⤷  Get Started Free
Morocco 43132 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2017075463 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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