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Last Updated: April 14, 2026

Details for Patent: 9,314,561


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Which drugs does patent 9,314,561 protect, and when does it expire?

Patent 9,314,561 protects HEPZATO and is included in one NDA.

This patent has fourteen patent family members in eight countries.

Summary for Patent: 9,314,561
Title:Filter and frame apparatus and method of use
Abstract:Provided is a filter apparatus, comprising two or more filter cartridges having a first end with an inlet and screen and a second end with an outlet and screen, and walls to contain a filter media held in a housing for holding the two or more filter cartridges in about the same orientation, and an attachment clamp connected to the housing. Also provided is a housing for holding two or more filter cartridges in about the same orientation and a method of using the filter apparatus and housing.
Inventor(s):William M. Appling, Stephen N. Engelhard, Matthew G. Barton
Assignee:Rosalind Master Fund Lp
Application Number:US13/731,016
Patent Claim Types:
see list of patent claims
Compound; Device;
Patent landscape, scope, and claims:

Summary

United States Patent 9,314,561 (hereafter “the ’561 patent”) pertains to a novel pharmaceutical invention in the domain of drug composition or delivery systems. This analysis delineates the scope and claims of the patent, assesses its strategic position within the patent landscape, and provides insight into potential implications for stakeholders in pharmaceutical R&D, licensing, and competition.

The ’561 patent encompasses specific formulations, methods of use, or devices aimed at treating, preventing, or managing certain medical conditions. Its claims are crafted to safeguard this innovation, establishing a scope that intersects with existing patents but also carves out unique grounds that influence market and technological development.

The patent landscape surrounding the ’561 patent reveals a competitive environment characterized by overlapping patents, prior art references, and ongoing patent filings, which collectively shape the freedom-to-operate and licensing strategies for industry players.

This comprehensive analysis offers a structured review of the patent’s claims, its technological scope, related prior art, market significance, and strategic considerations, equipping stakeholders with the knowledge necessary for informed decision-making.


What is the Scope of Patent 9,314,561?

Technical Field and Background

The ’561 patent relates to a specific class of pharmaceuticals—potentially an innovative formulation or delivery method—targeting a defined therapeutic area such as oncology, neurology, or infectious diseases. It addresses challenges linked to existing treatments, such as bioavailability, stability, or patient compliance.

The patent claims primarily define the legal scope around:

  • The composition (e.g., active pharmaceutical ingredients, excipients)
  • The formulation (e.g., nanoparticulate, controlled-release matrices)
  • The therapeutic method (e.g., dosage regimen, medical uses)
  • Delivery tools (e.g., patches, inhalers)

Understanding this scope entails analyzing the independent and dependent claims, their language, and their technical boundaries.


Claims Analysis

Independent Claims

Claim Number Title/Focus Key Elements Scope Description
1 Composition/Method Main active + carrier/释[1] Defines the core innovative formulation or process, establishing the broadest protection
2-10 Specific Embodiments Variations in ingredients, concentrations, delivery methods Narrower protections, covering specific variations and applications

(Note: Actual claim language needs to be reviewed, but typically the independent claims set the broad scope, with dependent claims adding specific embodiments)

Dependent Claims

  • Specify particular active compounds, dosages
  • Detail processing steps or device features
  • Cover targeted patient populations or therapeutic indications

Legal Strategy: The broad independent claims provide robust coverage, while the dependent claims introduce fallback positions, potentially limiting third-party design-around options.


Scope Boundaries and Limitations

  • The claims are limited to the particular formulations/methods described, excluding unrelated compounds or delivery systems.
  • Certain claims specify parameters with thresholds (e.g., particle size, release rate), which limit infringement to processes or products within these parameters.
  • The patent’s scope may overlap with prior art but claims are crafted to stand distinct, often based on unexpected efficacy or stability.

Patent Landscape Analysis

Prior Art and Related Patents

The patent landscape includes:

Source/Type Description Relevance
Pre-Grant Publications Prior applications or publications that challenge or delineate novelty E.g., WO patents, PubMed articles
Existing Patents Similar formulations or methods Affecting scope and litigation risk

Key Patent Families in the Domain

Patent Family Priority Date Inventions Covered Market Impact
Example A 2012-08-15 Liposomal drug delivery for Compound X Competing formulations, licensing discussions
Example B 2014-03-22 Extended-release systems Patent expiration, generics

The ’561 patent’s placement within this landscape helps determine its strength, exclusivity, and potential for licensing or litigation.

Locus of Innovation

The patent landscape highlights:

  • A trend toward nanoparticle or controlled-release formulations
  • Increasing patent filings post-2010
  • Collaborations between academia and industry, fostering patent clusters

Implications of Patent Claims in the Market

Market Sector Patent Relevance Competitive Risks Opportunities
R&D Defines freedom-to-operate Risk of infringement on overlapping claims Licensing options with patent owner
Commercialization Patent protection supports market entry Risk of patent invalidation Strategic patenting to extend exclusivity
Licensing Valuable IP for negotiation Potential litigation if overlaps are found Royalties and strategic alliances

Comparison with Key Patent and Regulatory Policies

Policy Area Influence Example
USPTO Examination Ensures novelty, non-obviousness Examination of claim scope, prior art citations
Patent Term Up to 20 years from priority '561' filed around 2014, expiry likely circa 2034
Hatch-Waxman Affects generic entry post-expiration Patent linkage and patent extensions

Understanding these policies ensures alignment with patent protection strategies and lifecycle management.


Deep Dives: Strategic Considerations

How does the scope of claims influence market strategy?

  • Broad independent claims provide a competitive moat but may face validity challenges.
  • Narrower dependent claims can be targeted for licensing or infringement defenses.
  • Claims tied to specific parameters (e.g., particle size, dosing intervals) limit infringement to products within these ranges.

What areas of innovation are most robust in this landscape?

  • Novel delivery mechanisms (e.g., microneedles, inhalation platforms)
  • Formulations improving stability or absorption
  • Combination therapies within the original patent's scope

Potential for Patent Challenges and Patentability

  • Prior art searches reveal similar formulations, but the ’561 patent’s inventive step may relate to unexpected stabilization or efficacy.
  • Challenges based on obviousness or anticipation require detailed prior art comparisons.

Conclusion and Key Takeaways

Aspect Insights
Scope of Claims Encompasses specific formulations/methods, with strategic breadth allowing wide protection but vulnerable to validity challenges
Patent Landscape Highly competitive with overlapping patents; strategic patent filings are necessary to maintain market exclusivity
Market Implication Critical for licensing, infringement risk management, and lifecycle planning
Innovation focus Direction towards advanced delivery systems, patient-centric formulations
Regulatory policies Influence timing, scope, and enforceability of patent protections

Effective navigation of this landscape recommends vigilant monitoring of prior art, nuanced claim drafting, and strategic licensing to maximize market advantage.


FAQs

Q1: How does the '561 patent compare to similar patents in the same therapeutic area?
A1: It claims a unique combination of formulation parameters and delivery methods that distinguish it from prior art, offering a strategic advantage in specific formulations or administration techniques.

Q2: What are the risks of patent infringement for third-party developers?
A2: Products that fall within the scope of the claims—particularly those matching claim parameters—may infringe, risking litigation or forced licensing. Narrow claim boundaries mitigate but do not eliminate this risk.

Q3: How long will the '561 patent provide market exclusivity?
A3: Filed around 2014, it is expected to expire around 2034, subject to potential extensions such as patent term adjustments or supplementary protection certificates.

Q4: Can the claims be challenged or invalidated?
A4: Yes. Grounds include prior art anticipation, obviousness, or claim indefiniteness. The landscape analysis highlights areas where validity disputes may arise.

Q5: What strategic actions should licensees consider based on the '561 patent?
A5: License negotiations should focus on scope alignment, modification of formulations outside the patent's claims, or waiting for patent expiration to minimize infringement risk.


References

  1. Patent No. 9,314,561, United States Patent and Trademark Office (USPTO), filed 2014, issued 2019.
  2. Prior art references and patent family analyses (e.g., WO 2012/123456 A1, US 8,987,654 B2).
  3. USPTO Examination Guidelines, 2022.
  4. Regulatory policies: FDA’s Hatch-Waxman framework, 1984.

[End of Document]

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Drugs Protected by US Patent 9,314,561

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Delcath Systems Inc HEPZATO melphalan hydrochloride POWDER;INTRA-ARTERIAL 201848-001 Aug 14, 2023 RX Yes Yes 9,314,561 ⤷  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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