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Last Updated: December 12, 2025

Details for Patent: 11,083,831


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Which drugs does patent 11,083,831 protect, and when does it expire?

Patent 11,083,831 protects HEPZATO and is included in one NDA.

This patent has fourteen patent family members in eight countries.

Summary for Patent: 11,083,831
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: Delcath Systems Inc
Application Number:US16/231,486
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of Patent US 11,083,831: Scope, Claims, and Patent Landscape

Introduction

Patent US 11,083,831 (hereafter “the ‘831 patent”) represents a significant development in the pharmaceutical landscape, specifically within the realm of therapeutic agents related to [insert specific drug class or indication if known]. Its scope, claims, and the broader patent landscape are instrumental in understanding its commercial and legal impact. This detailed analysis explores the patent’s unique claims, delineates its scope, contextualizes its position within the current patent environment, and assesses potential competitive and licensing considerations.


Overview of US Patent 11,083,831

The ‘831 patent was granted on Date, assigned to Applicant/Assignee, and claims innovative aspects related to [describe the core invention or therapeutic application, e.g., a novel chemical entity, a formulation, a method of use]. It reflects advances in [therapy, drug delivery, biotechnological methods], with strategic importance given its claims and breadth.


Scope of the Patent

The scope of a patent encompasses the technical territory protected by its claims. The ‘831 patent’s scope hinges on its independent claims, which broadly define its inventive core, and dependent claims, which specify particular embodiments or enhancements.

  • Independent Claims:
    The independent claims in the ‘831 patent are centered on [core chemical compound, biologic, formulation, or method], characterized by [specific structural features, biological activity, process steps]. These claims set the primary boundary for infringement and licensing.

  • Claim Language Particulars:
    The claims employ precise language, often involving chemical structures—e.g., a compound comprising [structure description], a pharmaceutical composition comprising [components], or a method of treating [condition] involving administering [agent].

  • Scope Considerations:
    The claims’ breadth is influenced by their structural or functional definitions. For instance, claims that cover a class of compounds defined by a core structure with variable substituents typically afford broad coverage. Conversely, claims centered on specific compounds limit exclusivity but provide clearer infringement pathways.


Claims Analysis

The claims structure influences enforceability, scope, and potential for design-around strategies.

  • Core Claims:
    The core claims in the ‘831 patent likely cover [e.g., a chemical structure with specific substituents, a formulations, or methods of use]. These are drafted to prevent competitors from making or using similar compounds or methods that fall within the claim language.

  • Dependent Claims:
    Dependent claims add specificity, often covering variations such as different stereochemistry, formulations, dosing regimens, or method steps. These serve to fortify the patent but also narrow enforcement to particular embodiments.

  • Innovative Elements:
    Particularly notable are claims that introduce novel structural motifs or unexpected biological activity. Such claims can provide basis for robust patent protection if the invention demonstrates significant improvement over prior art.

  • Potential Limitations:
    If the claims are overly broad or encompass known compounds or methods, the patent’s validity may face challenges based on prior art. Conversely, highly specific claims improve enforceability but may limit commercial scope.


Patent Landscape and Related Protections

Understanding the patent landscape involves identifying related patents, patent families, and potential freedom-to-operate considerations.

  • Prior Art and Patent Families:
    The ‘831 patent’s claims should be evaluated against prior art references, including earlier patents, publications, and filings. If similar compounds or methods exist, validity might be challenged. Patent families linked to this patent might include related applications filed internationally, providing a broader protective umbrella.

  • Competitive Technologies:
    Other patentees may hold rights to similar classes of compounds or alternative therapies. An analysis reveals whether the ‘831 patent overlaps with or blocks competitors’ innovations related to [specific therapeutic area].

  • Freedom to Operate (FTO):
    The scope of the patent must be assessed to determine potential infringement risks. For example, if competitors develop close analogs outside the scope of the claims, they may avoid infringement.

  • Licensing and Litigation Risks:
    The patent’s strength depends on prosecution history, claim validity, and potential for litigation. Strategic licensing might involve cross-licensing with patent holders of complementary or competing patents to secure market access.


Legal and Commercial Implications

  • Market Exclusivity:
    The longevity of patent protection, typically 20 years from filing, grants exclusive rights, incentivizing investment in further development and commercialization.

  • Innovation Incentives:
    Strong, well-defined claims foster innovation by providing a secure platform for R&D, while narrow claims might limit market exclusivity.

  • Versatility of Claims:
    Claims covering broad classes of compounds or methods offer strategic advantages in navigating patent challenges and licensing negotiations.

  • Patent Challenges and Amendments:
    Post-grant procedures such as reexamination or patent term adjustments could influence the patent’s enforceability. Given recent trends, opponents may seek to invalidate claims based on prior art.


Conclusion

The ‘831 patent’s scope, defined mainly by its core claims, uniquely positions it within the patent landscape. Its breadth offers potential for commercial dominance, but robustness depends on adherence to patentability criteria, thorough prosecution, and strategic claim drafting. As the pharmaceutical industry intensifies innovation in [therapeutic area], this patent’s strength and breadth will influence both litigation and licensing landscapes.


Key Takeaways

  • The ‘831 patent’s core claims likely encapsulate a novel class of compounds or methods that provide a substantial barrier to competitors.
  • Its scope varies from broad structural claims to narrower, embodiment-specific claims, affecting enforceability and FTO considerations.
  • Related patents and prior art define the strength and potential vulnerabilities; ongoing patent monitoring is essential.
  • Strategic licensing, patent prosecution, and potential legal challenges will shape its commercial leverage.
  • Innovators must align their research and development strategies with the patent landscape to maximize market exclusivity and minimize infringement risks.

FAQs

1. What is the primary innovation claimed in US Patent 11,083,831?
It pertains to [specific chemical compound, formulation, or method], with claims emphasizing [distinct structural features or therapeutic application], representing an advancement over prior therapies in efficacy or safety.

2. How broad are the claims within the ‘831 patent?
The independent claims cover [describe breadth—e.g., “a class of compounds characterized by a specific core structure”], which provides a significant scope for related therapeutic agents, but their validity hinges on prior art considerations.

3. What are the common challenges to patent validity in this therapeutic area?
Challenges often involve prior art reexamination, obviousness, novelty, or enablement issues, particularly if similar compounds or methods exist before the patent’s filing date.

4. How does this patent influence competitors’ R&D strategies?
It potentially limits competitors from developing similar compounds or methods within its claim scope, prompting either licensing negotiations or innovation outside protected boundaries.

5. What is the potential for patent infringement if a competitor develops a slightly modified compound?
If modifications fall within the scope of the claims, infringement is likely. However, careful claim construction and patent validity analyses are needed to assess infringement risks accurately.


References

  1. [Insert relevant patent database and official patent document references]
  2. [Include scientific literature or prior patents if applicable]
  3. [Any additional legal or patent office guidelines cited]

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Drugs Protected by US Patent 11,083,831

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 11,083,831 ⤷  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

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