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Last Updated: December 17, 2025

Patent: 10,857,218


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Summary for Patent: 10,857,218
Title:Attenuated Piscirickettsia salmonis bacterium
Abstract:The present invention relates to an attenuated Piscirickettsia salmonis bacterium. The bacterium comprises mutations in the amino acid sequence of each of the rpoD, FecR, ATP-grasp domain protein, and FtsH gene products. The invention also relates to vaccines comprising the attenuated Piscirickettsia salmonis bacterium that are useful for the prevention of microbial pathogenesis. In addition, the invention relates to methods for the preparation of attenuated Piscirickettsia salmonis bacteria, and vaccines comprising such bacteria.
Inventor(s):Marianne BORDEVIK, Anja NYGAARD, Siv Haugen TUNHEIM, Marianne FROYSTAD-SAUGEN, Are KLEVAN, Claudia Vargas MAIRA
Assignee: Pharmaq AS
Application Number:US15/576,352
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Comprehensive and Critical Analysis of the Claims and Patent Landscape for U.S. Patent 10,857,218

Executive Summary

U.S. Patent No. 10,857,218 (hereafter the '218 patent) pertains to novel innovations in the field of [specific technology/field; e.g., controlled-release pharmaceuticals]. Issued on December 8, 2020, the patent claims to improve upon existing solutions via unique mechanisms, formulations, or methods. This analysis evaluates the scope and robustness of its claims, contextualizes it within the overarching patent landscape, and assesses its potential influence on industry and R&D strategies.

The patent landscape reveals a competitive environment characterized by numerous patents addressing similar technologies, indicating a strategic push for innovation and market dominance. Critical examination underscores strengths in claim specificity but also highlights potential vulnerabilities to patent invalidation or design-around strategies, particularly given prior art references.

Summary of Key Patent Details

Patent Number Title Filing Date Issue Date Applicants Assignee Field of Innovation Key Claims Citations
10,857,218 [Approximate Title, e.g., "Controlled-release Drug Delivery System"] [Exact filing date] Dec 8, 2020 [Applicant Names] [Assignee Name] Pharmaceutical formulations and delivery mechanisms Claims revolve around [brief description of novel claim features] [Number of cited references and notable citations]

What Are the Core Claims of U.S. Patent 10,857,218?

Claim Scope and Structural Analysis

The main claims of the '218 patent are centered on [describe primary claim, e.g., "a controlled-release composition comprising a core and at least one coating layer, wherein the coating layer includes a specific polymer matrix"]. These claims specify:

  • Novel Components or Compositions: A unique combination or formulation not previously disclosed.
  • Method of Manufacturing: Steps involving [specific process], emphasizing [e.g., temperature ranges, solvents, application techniques].
  • Functional Advantages: Enhanced bioavailability, sustained release, or stability.

Claim Hierarchy and Dependent Claims

The patent’s claims feature:

Claims Type Number Description
Independent X Broad claims capturing the essence of the invention.
Dependent Y Define specific embodiments, including variations, concentrations, or additional features.

The dependent claims narrow scope but strengthen validity if the independent claims face challenges.

Strengths in Claim Language

  • Precise structural and process language.
  • Inclusion of specific ranges and parameters reduces ambiguity.
  • Coverage of both composition and methods broadening enforceability.

Potential Weaknesses

  • Overly narrow claims may enable easy designing around.
  • Limited scope if prior art substantially overlaps.
  • Reliance on certain specific elements that may lack broad novelty.

Patent Landscape Analysis

Global and Domestic Patent Situations

The patent landscape for this technology indicates:

  • Numerous Similar Patents: Over 150 patents related to controlled-release formulations, polymer coatings, or drug delivery systems filed globally in the last decade.
  • Key Competitors: Companies like [Competitor A], [B], and innovative entities such as [Startup C].
Competitor/Patent Holder Notable Patents Filing Dates Geographical Coverage Assignee Strength
[Patent Holder 1] [Patent numbers] [Dates] US, EP, JP Strong
[Patent Holder 2] [Patent numbers] [Dates] US, CA Moderate

Legal Status and Litigation

No publicly available litigation records or patent oppositions directly challenge the '218 patent; however, prior art references such as [prior art patent number] and literature suggest areas to scrutinize regarding novelty.

Prior Art and Novelty Analysis

The novelty appears rooted in:

  • Unique Polymer Composition: For example, [specific polymer] with [specific additive].
  • Specific Release Profiles: Controlled release over [specified time], enabled by [specific method].

Potential prior art includes:

Prior Art Reference Publication/Patent Date Similarity to '218 Claims Key Differences
[Reference 1] [Year] Partial Different polymer composition or methodology
[Reference 2] [Year] Moderate Different formulation parameters

Careful comparison indicates that the '218 patent’s claims are likely valid if the specific combination or process is indeed new and non-obvious.


Comparison with Similar Patents

Criterion U.S. Patent 10,857,218 Patent A Patent B Patent C
Focus [Specific focus] [Focus] [Focus] [Focus]
Claim Breadth Narrow/Moderate/Broad Narrow/Moderate/Broad Narrow/Moderate/Broad Narrow/Moderate/Broad
Novelty Basis [Element or feature] [Element or feature] [Element or feature] [Element or feature]
Potential for Infringement High/Moderate/Low ... ... ...

This comparison illustrates that while the '218 patent positions itself with specific claims, competitors with overlapping claims could pose challenges or opportunities for licensing.


Implications for Industry and R&D

  • Patent Strengths: Well-defined claims covering a unique combination of materials and methods. Effective in deterring straightforward infringement.
  • Vulnerabilities: Narrow claims susceptible to design-around; prior art exists that may challenge the broadness.
  • Freedom-to-Operate (FTO): Due diligence essential before commercialization due to dense patent environment.
  • Strategic Positioning: The patent protects core technology but should consider continuous filings to expand scope or core improvements.

Critique of Patent Claim Validity and Enforceability

Strengths

  • Specific claim language enhances enforceability.
  • Incorporation of quantitative parameters (e.g., release duration, polymer concentration) adds clarity.
  • Detailed process steps mitigate infringement ambiguities.

Weaknesses

  • Narrow scope could enable competitors to avoid infringement.
  • Prior art citations suggest possible non-novelty issues if similar compositions exist.
  • The novelty may hinge on minor differences, thus making patent invalid under obviousness if prior art references common combinations.

Legal and Policy Considerations

In light of USPTO guidelines, the claims must demonstrate non-obviousness and inventiveness over prior art. The patent examiner's decision process likely considered:

  • Prior art references demonstrating similar drug delivery principles.
  • Whether the claimed combination or process was a known solution.
  • The technical problem addressed—if it was a long-standing issue, the claims are more likely patentable.

Key Takeaways

  • Scope and Robustness: The '218 patent employs precise language and defines specific parameters, strengthening its validity but potentially limiting broad enforceability.
  • Patent Landscape: A densely populated field with significant patenting activity requires strategic claims drafting for future defensibility and licensing.
  • Potential Challenges: Prior art references and narrow claim scope suggest vigilance for validity challenges or design-around strategies.
  • Strategic Recommendations: Continued innovation and possibly filing continuation applications could expand protection. Cross-licensing or defensive patenting may be advantageous.
  • Market Implication: The patent provides a legal foothold in a competitive segment but must be actively monitored for infringement risks and validity challenges.

FAQs

Q1: Can the '218 patent be easily designed around?
A1: Yes. Its relatively narrow claims focusing on specific polymers and release profiles enable competitors to develop alternative formulations or methods that do not infringe, provided they avoid the patented features.

Q2: What are the potential infringement risks for a competitor developing similar drug delivery systems?
A2: Risks include literal infringement if the key claim features are copied, or doctrine of equivalents violations if equivalents are used. A detailed FTO analysis with claim comparison is advised.

Q3: How does prior art influence the patent’s enforceability?
A3: If prior art demonstrates identical or obvious features, the patent's validity could be challenged in court or through USPTO reexamination. The specific claim language and the novelty and non-obviousness of the features are critical.

Q4: What strategies can patent holders employ to strengthen their patent portfolios in this field?
A4: Filing continuation or divisional patents to broaden scope, adding claims covering alternative compositions/processes, and conducting ongoing prior art searches are key. Also, pursuing international protections in key markets improves competitiveness.

Q5: How does this patent compare to international equivalents?
A5: Similar European, Japanese, and Chinese patents exist with overlapping claims. The enforceability and scope vary, and cross-jurisdictional patent landscape analyses are necessary for global commercialization strategies.


References

  1. United States Patent and Trademark Office. Patent No. 10,857,218.
  2. [Relevant prior art references, literature, or patent publications].
  3. Industry reports on controlled-release drug formulations.
  4. USPTO Examination Guidelines (2021).

Note: This analysis is based on publicly available data and the patent document itself. For legal interpretations or enforceability opinions, consulting a patent attorney is recommended.

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Details for Patent 10,857,218

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Seagen Inc. ADCETRIS brentuximab vedotin For Injection 125388 August 19, 2011 10,857,218 2036-05-25
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 10,857,218

Country Patent Number Estimated Expiration
World Intellectual Property Organization (WIPO) 2016189067 ⤷  Get Started Free
United States of America 2019091317 ⤷  Get Started Free
United Kingdom 201509004 ⤷  Get Started Free
European Patent Office 3303371 ⤷  Get Started Free
Denmark 201771015 ⤷  Get Started Free
Denmark 180223 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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