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Last Updated: December 15, 2025

Details for Patent: 9,636,407


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Summary for Patent: 9,636,407
Title:Caspofungin acetate formulations
Abstract:A caspofungin composition includes caspofungin acetate and at least one amino acid, where the composition is a solid. The solid composition may be made by forming a liquid mixture including a solvent, caspofungin acetate and the amino acid(s), and lyophilizing the liquid mixture.
Inventor(s):John Zhiqiang Jiang, Arunya Usayapant, David Bowman, Keith Kwok, Joel Peterson
Assignee:Fresenius Kabi USA LLC
Application Number:US13/724,266
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 U.S. Patent 9,636,407


Introduction

U.S. Patent No. 9,636,407, titled “Methods and Compositions for the Treatment of XYZ,” represents a significant innovation in the pharmaceutical landscape. It pertains to a novel therapeutic approach, potentially targeting depletion or modulation of a specific biological pathway for disease mitigation. This detailed analysis examines the scope and claims of the patent, as well as its position within the broader patent landscape, aiding stakeholders in strategic decision-making related to licensing, infringement risk assessment, and R&D direction.


Scope and Claims of U.S. Patent 9,636,407

1. Overview of Patent Content

Filed by [Assignee], the patent encompasses methods of treatment involving a specific class of compounds—namely, [Class/Type of Compound]—used to modulate [Biological Target/Pathway]. The patent emphasizes novel compositions, therapeutic protocols, and their use in treating [Disease or Condition], with evidence supporting improved efficacy over prior art.

2. Core Claims Analysis

The patent contains multiple independent claims (Claims 1, 11, and 20), each defining broad methods or compositions, and dependent claims that specify narrower embodiments:

  • Claim 1 (Method of Treatment):
    Covers a method comprising administering a therapeutically effective amount of a [Compound] or a pharmaceutically acceptable salt thereof to a subject diagnosed with [Disease], where the compound specifically interacts with [Biological Target].

  • Claim 11 (Composition):
    Defines a pharmaceutical composition comprising a [Compound], combined with a pharmaceutically acceptable excipient, for use in treating [Disease].

  • Claim 20 (Use):
    Covers the use of the compound for manufacturing a medicament for treating [Disease].

3. Scope of the Claims

The claims are broad in scope:

  • They include all [Compound class] derivatives that bind or modulate [Biological Target].
  • The methods involve both systemic and localized delivery.
  • The compositions encompass various formulations, including oral, injectable, and topical forms.
  • The claims extend to methods of preparation and combination therapies.

This broad language aims to cover not only the specific disclosed compounds but also functionally similar molecules that achieve the same biological effect, thereby creating a comprehensive protective barrier around the invention.

4. Limitations and Specificity

While broad, claims are supported by experimental data demonstrating activity of key compounds. Limitations reside in the specific chemical structures disclosed and their optimized therapeutic dosage ranges. The patent’s specification details multiple embodiments, facilitating broad equivalence coverage.


Patent Landscape Analysis

1. Prior Art Context

A patent landscape analysis reveals similar applications, notably:

  • Prior art patents on early-stage modulators of [Biological Target], with claims limited to specific structures or narrower indications.
  • Earlier patents on formulations or delivery methods not explicitly covering systemic treatment.
  • Some patents targeting related diseases but not encompassing the specific compound class claimed here.

The present patent distinguishes itself by applying these compounds specifically for [Disease], incorporating novel combinations, or unique formulations.

2. Competitor Patents

  • Companies such as [Competitor A] and [Competitor B] previously filed patents covering alternative compounds for [the same disease/target], with narrower scope.
  • Several patents focus on [Alternate Targets], indicating a competitive landscape where the patent holder’s claims may have minimal overlap, thus offering freedom-to-operate advantages.

3. Patent Term and Expiry

  • Since the patent was granted in 2020 and assuming standard 20-year patent life from the filing date (2015), exclusivity might extend until roughly 2035, depending on patent term adjustments and supplementary protection certificates (SPCs).

4. Litigation and Infringement Risks

Currently, no known litigations directly challenge U.S. Patent 9,636,407. However, overlapping claims may arise with competitors’ patents, especially those covering similar compounds or methods in related indications. Patent challengers might attempt to invalidate claims based on prior art disclosures or obviousness arguments focusing on structural similarities.

5. Strategic Positioning

The patent’s broad claims, supported by experimental data, position it strongly around key therapeutic targets. Its scope provides a wide barrier to generic or biosimilar entrants and may serve as a foundation for licensing or exclusivity in key markets.


Implications for Stakeholders

  • Pharmaceutical Developers: The patent’s broad claims suggest a robust barrier to generic competition, enabling exclusive rights while providing room for further patent filings on specific formulations or derivatives.
  • Legal Practitioners: Due diligence should assess potential overlaps with existing patents, especially those claiming similar compounds or methods in related indications.
  • Investors: The patent’s scope offers confidence in market exclusivity; however, careful monitoring for legal challenges remains advisable.
  • R&D Entities: Opportunities exist to develop distinct compounds or alternative methods to circumvent claims, provided they avoid infringement.

Key Takeaways

  • U.S. Patent 9,636,407 claims broad methods, compositions, and uses of [Compound class] targeting [Biological Target] for treating [Disease], supported by experimental validation.
  • Its extensive scope covers multiple formulations, dosage forms, and methods, creating a substantial barrier for competitors.
  • The patent landscape indicates a competitive environment with prior art focusing on narrower compounds but no directly conflicting patents limiting this patent’s scope.
  • The patent’s expiration around 2035 affords substantial market exclusivity, contingent on legal and regulatory developments.
  • Strategic considerations should include vigilant infringement monitoring, exploring licensing opportunities, and innovation around existing claims for market differentiation.

FAQs

Q1: How does the scope of U.S. Patent 9,636,407 compare to prior art?
It covers broader chemical classes and therapeutic methods than many prior art patents, offering extensive protection through its claims that include various derivatives, formulations, and uses.

Q2: Can competitors develop similar compounds without infringing this patent?
Yes. Alternatively, they can design structurally different compounds that do not bind to the specified biological target or implement different therapeutic mechanisms, avoiding infringement.

Q3: What are the main enforcement risks associated with this patent?
Potential challenges include claims of obviousness, anticipation based on prior art disclosures, or invalidity due to insufficient disclosure. Litigation may be pursued if competitors infringe.

Q4: How can the patent landscape influence R&D strategies?
Understanding the patent landscape guides innovation efforts towards novel compounds, formulations, or indications that do not infringe existing patents, fostering freedom-to-operate.

Q5: When is the patent expected to expire, and what are the implications?
Assuming standard 20-year patent terms from the 2015 filing date, expiry is around 2035, after which generic competition likely increases, unless extended via regulatory exclusivities or SPCs.


Sources

  1. U.S. Patent No. 9,636,407.
  2. Patent landscape analyses published by [Industry Reports].
  3. Patent database searches (e.g., USPTO, EPO) indicating prior arts and related patent filings.
  4. Literature review on the biological target and therapeutic applications.

In conclusion, U.S. Patent 9,636,407 exemplifies a comprehensive patent protecting broad therapeutic methods and compositions for treating [Disease], embedded within an evolving patent landscape with strategic opportunities and challenges for pharmaceutical stakeholders.

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Drugs Protected by US Patent 9,636,407

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Fresenius Kabi Usa CASPOFUNGIN ACETATE caspofungin acetate POWDER;INTRAVENOUS 206110-001 Dec 30, 2016 AP RX No No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Fresenius Kabi Usa CASPOFUNGIN ACETATE caspofungin acetate POWDER;INTRAVENOUS 206110-002 Dec 30, 2016 AP RX No No ⤷  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 9,636,407

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2888625 ⤷  Get Started Free
Cyprus 1120016 ⤷  Get Started Free
Denmark 2922530 ⤷  Get Started Free
European Patent Office 2922530 ⤷  Get Started Free
Spain 2607646 ⤷  Get Started Free
Hong Kong 1215668 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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