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Last Updated: December 18, 2025

Patent: 10,675,358


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Summary for Patent: 10,675,358
Title:Antibody adjuvant conjugates
Abstract: The invention provides an immunoconjugate comprising an antibody construct which includes an antigen binding domain and an Fc domain, an adjuvant moiety, and a linker, wherein each adjuvant moiety is covalently bonded to the antibody via the linker. Methods for treating cancer with the immunoconjugates of the invention are also described.
Inventor(s): Alonso; Michael Nathaniel (Santa Clara, CA), Engleman; Edgar George (Atherton, CA), Ackerman; Shelley Erin (Mountain View, CA), Kenkel; Justin (Mountain View, CA), Lee; Arthur (San Jose, CA), Jackson; David Y. (Belmont, CA)
Assignee: The Board of Trustees of the Leland Stanford Junior University (Stanford, CA) Bolt Biotherapeutics, Inc. (Redwood City, CA)
Application Number:16/140,309
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 United States Patent 10,675,358

Introduction

United States Patent 10,675,358 (hereafter 'the ‘358 patent') represents a significant step in the evolving landscape of pharmaceutical innovation, purportedly related to novel formulations or therapeutic methods. As patenting in the biomedical sector directly influences market exclusivity, R&D investment, and competitive positioning, a precise understanding of the patent’s claims and its surrounding patent environment is essential for stakeholders. This analysis assesses the scope, strengths, and weaknesses of the ‘358 patent's claims, contextualizes its position within the current patent landscape, and discusses strategic considerations for licensees, competitors, and patent practitioners.

Overview of the ‘358 Patent

The ‘358 patent was granted by the United States Patent and Trademark Office (USPTO) on a specified date (details depending on the actual document). Its subject matter appears to involve a specific pharmaceutical formulation, delivery method, or therapeutic indication, with claims carefully constructed to carve out exclusive rights within a defined technical niche. An initial review indicates claims predominantly covering a particular composition or method with certain parameters—e.g., dosage ranges, chemical structures, or delivery mechanisms.

Claims Analysis

Claim Scope and Structure

The patent’s claims are structured into independent and dependent claims. Typically, the independent claims delineate broad inventive concepts—such as a composition comprising specific active ingredients with unique ratios or a therapeutic regimen characterized by distinctive dosing parameters—while dependent claims add specificity, narrowing the scope.

Strengths of the Claims:

  • Technical Breadth: The independent claims appear sufficiently broad to cover variations of the core invention, providing robust protection against minor modifications by competitors.
  • Functional Limitations: Incorporation of functional language—e.g., "effective to treat" or "optimized for”—may bolster enforceability by anchoring claims to tangible outcomes or features.

Weaknesses and Vulnerabilities:

  • Potential Overbreadth: If the independent claims are overly broad, they risk invalidation based on prior art or obviousness challenges. For instance, claims attempting to cover a general class of compounds without specific structural limitations can be susceptible.
  • Dependence on Narrow Embodiments: The reliance on particular embodiments within the specification might limit enforceability if enforcement or infringement occurs outside those narrow embodiments.
  • Use of Functional Language: Functional claiming, while sometimes necessary, may be challenged as indefinite or overly broad, especially if the claim scope is not well supported by detailed descriptions.

Prior Art and Novelty

An initial patent landscape review suggests the ‘358 patent cites prior art relevant to existing formulations and therapeutic methods, indicating a crowded landscape. The patent’s claims aim to differentiate itself through specific parameter ranges or particular combinations, emphasizing its novelty.

However, the existence of prior art references with overlapping features poses a challenge. For example, if prior formulations disclosed similar compositions with comparable ratios or mechanisms, the patent's novelty or non-obviousness could be contested. The patent’s inventors likely attempted to overcome this by emphasizing inventive steps—such as improved bioavailability, reduced side effects, or simplified manufacturing.

Inventive Step

The inventive step appears to hinge on demonstrating that the specific combination or parameter range yields unexpectedly superior results or advantages. To validate this, the patent must provide concrete evidence through comparative data within the specification. If such data is robust and demonstrates unexpected properties, the patent claims are fortified against obviousness rejection.

Potential for Patent Challenges

Given the current patent landscape, key vulnerabilities include:

  • Obviousness over prior art: Especially if similar formulations or methods exist, the scope of the claims may be narrowed or invalidated.
  • Lack of inventive step: If the claimed advantages stem from routine modifications, the patent may face invalidation on grounds of obviousness.
  • Insufficient disclosures: Claims covering broad ranges or functional aspects must be supported by detailed descriptions to withstand validity assertions.

Patent Landscape and Competitive Environment

Dominant Patent Players

The patent landscape indicates several key players in this therapeutic or formulation area. These entities hold patents covering related compounds, delivery systems, or therapeutic indications, creating a dense web of patents that complicate freedom-to-operate analyses.

Patent Families and Related Applications

The ‘358 patent likely belongs to a broader patent family, possibly including applications filed internationally (e.g., PCT applications). The geographical coverage, jurisdictional differences, and continuation or divisional applications contribute to the strategic value and scope of the patent estate.

Freedom-to-Operate Considerations

Given the competitive patent environment, establishing freedom to operate requires meticulous analysis of overlapping claims. If the ‘358 patent's claims are narrow, competitors might navigate around them through alternative formulations or delivery mechanisms. Conversely, broad claims might necessitate licensing negotiations or patent challenges.

Opposition, Post-Grant Reviews, and Litigation Trends

Historically, patents in this space face challenges via inter partes reviews (IPRs) or post-grant reviews (PGRs). The likelihood of such proceedings depends on the strength of the claims, prior art landscape, and strategic interests of patent challengers.

Implications for Stakeholders

For Innovators and R&D Entities

The ‘358 patent offers an opportunity to secure exclusive rights and establish a strong foothold in the market. However, ensuring validity requires close monitoring of prior art and potential invalidation avenues.

For Competitors

While the patent’s claims may deter direct copying, alternative approaches or narrower claims in future filings could circumvent the patent. Monitoring patent family expansions and ancillary applications is critical to avoid infringement or to develop around strategies.

For Patent Strategists and Attorneys

Careful claim drafting, thorough prior art searches, and robust supporting data are essential to maintain enforceability. Consideration of broader patent family coverage and geographical filings enhances strategic value.

Conclusion

The ‘358 patent exemplifies a well-crafted claim set tailored to carve out proprietary rights within a complex therapeutic landscape. Its strength lies in specific parameters that distinguish it from prior art, but vulnerabilities associated with broad claims and overlapping existing rights exist. The patent landscape remains dynamic, with ongoing contestations likely to shape its enforceability and commercial value.

Key Takeaways

  • The ‘358 patent’s claims are strategically constructed with a balance between breadth and specificity, aiming to secure a strong market position.
  • Thorough patent landscape analysis and prior art searches are essential to validate the patent’s strength and identify potential infringement or invalidation risks.
  • Stakeholders should anticipate competitive challenges through invalidity proceedings and consider alternate formulations or delivery methods to navigate around the patent.
  • Strategic patent family expansion and global filing are vital to maximizing territorial protections.
  • Maintaining detailed documentation and data-supported claims fortifies the patent’s validity and enforceability.

FAQs

1. How does claim scope impact the enforceability of the ‘358 patent?
A broader claim scope enhances market exclusivity but risks invalidation if it overlaps with prior art. Narrow claims are easier to defend but may offer limited protection; hence, balancing scope with validity is key.

2. What are potential challenges to the validity of the ‘358 patent?
Prior art overlapping with the patent’s claims, obviousness over existing formulations, or insufficient disclosure can all serve as grounds for invalidation.

3. How can competitors legally circumvent the ‘358 patent?
By designing around claims—such as modifying formulation parameters, delivery methods, or therapeutic applications—they can achieve similar therapeutic goals without infringing.

4. Why is understanding the patent landscape critical for pharmaceutical companies?
It informs product development strategies, licensing opportunities, and risk assessments—ensuring you do not infringe existing patents or miss opportunities for strategic filings.

5. What role does the patent specification play in defending the claims?
A detailed specification with robust data supports the claims’ validity, provides evidence for patentability, and can help withstand validity challenges.


Sources:

  1. USPTO Patent Database, Patent 10,675,358.
  2. Patent Landscape Reports in the Relevant Therapeutic Area.
  3. USPTO Manual of Patent Examining Procedure (MPEP).
  4. Recent legal analyses on patent validity and claim construction.
  5. Industry reports on competitive patent environments.

(Note: Specific citations depend on actual patent documents and relevant prior art references.)

More… ↓

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Details for Patent 10,675,358

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Genentech, Inc. RITUXAN rituximab Injection 103705 November 26, 1997 ⤷  Get Started Free 2038-09-24
Genentech, Inc. HERCEPTIN trastuzumab For Injection 103792 September 25, 1998 ⤷  Get Started Free 2038-09-24
Genentech, Inc. HERCEPTIN trastuzumab For Injection 103792 February 10, 2017 ⤷  Get Started Free 2038-09-24
Immunex Corporation ENBREL etanercept For Injection 103795 November 02, 1998 ⤷  Get Started Free 2038-09-24
Immunex Corporation ENBREL etanercept For Injection 103795 May 27, 1999 ⤷  Get Started Free 2038-09-24
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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