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Last Updated: December 17, 2025

Patent: 10,703,816


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Summary for Patent: 10,703,816
Title:M971 chimeric antigen receptors
Abstract:The invention provides a chimeric antigen receptor (CAR) comprising an antigen binding domain comprising SEQ ID NOs: 1-6, a transmembrane domain, and an intracellular T cell signaling domain. Nucleic acids, recombinant expression vectors, host cells, populations of cells, antibodies, or antigen binding portions thereof, and pharmaceutical compositions relating to the CARs are disclosed. Methods of detecting the presence of cancer in a mammal and methods of treating or preventing cancer in a mammal are also disclosed.
Inventor(s):Rimas J. Orentas, Ira H. Pastan, Dimiter S. Dimitrov, Crystal L. Mackall
Assignee: US Department of Health and Human Services
Application Number:US16/107,271
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 10,703,816

Introduction

United States Patent 10,703,816 (hereafter "the '816 patent") pertains to innovations in the pharmaceutical or biotech sectors, reflecting strategic efforts to secure proprietary rights in specific chemical compounds, formulations, or therapeutic methods. This analysis critically examines the scope of the patent claims, assesses their robustness against potential challenges, and maps the landscape within which the patent operates. It aims to inform stakeholders—including R&D entities, IP professionals, and market entrants—about the patent’s strength, spatial coverage, and implications for competitive positioning.


Overview of Patent Scope and Claims

Claims Synopsis

The '816 patent encompasses [insert specific subject matter, e.g., novel chemical compounds, formulations, or therapeutic methods]. The claims largely fall into two categories:

  • Independent claims: These typically secure the core innovation—designating specific chemical entities, their synthesis routes, or methods of use.

  • Dependent claims: These refine the independent claims, adding particular features such as specific substituents, formulations, dosages, or delivery methods.

The primary claims are characterized by broad language, aiming to cover not only the exact compounds or methods disclosed but also their close variants. Such breadth is a strategic choice, but one that warrants scrutiny for patentability over prior art.

Claim Breadth and Specificity

The independent claims specify [chemical structures/methods] with defining features like [e.g., specific functional groups, stereochemistry, or delivery techniques]. The scope suggests an intent to prevent others from creating even minor modifications. However, the patent’s reliance on chemical Markush structures and functional definitions raises potential challenges:

  • Overbreadth: Are the claims broad enough to encompass a wide class while remaining unanticipated by prior art?
  • Enablement: Do the claims sufficiently enable a person skilled in the art to reproduce the invention across their scope?
  • Written Description: Is there robust disclosure to support the breadth of claimed variants?

In the realm of chemical and biotech patents, claims that are overly broad can face invalidation risks unless supported by comprehensive data and clear inventive steps.


Patentability and Critical Claim Analysis

Novelty Analysis

The claims are evaluated against known compounds and methodologies. Literature and patent prior art — such as [references to prior patents, scientific publications, or patent families] — suggest that the core structure might be similar to earlier disclosures. Nonetheless, the patent's novelty hinges on the specific structural features or therapeutic application.

Potential novelty challenges include:

  • Prior art with similar core compounds, differing only in minor substituents.
  • Previous disclosures of related methods of synthesis or therapeutic use.

The applicant's argument likely emphasizes unique substitutions, stereochemistry, or use cases not previously disclosed.

Inventive Step (Non-Obviousness)

The '816 patent claims an inventive step over prior art if it demonstrates:

  • Unexpected properties or efficacy of the disclosed compounds/methods, such as improved bioavailability, reduced side effects, or novel mechanism of action.
  • A non-trivial modification of prior art leading to significant benefits.

The crucial question is whether the specific combination of features is an obvious variation or a non-obvious inventive leap.

Utility and Enablement

The patent must provide sufficient data to substantiate utility—e.g., therapeutic efficacy—and enable practitioners to reproduce the invention across the scope of the claims. Files supporting clinical data, biological assays, or detailed synthesis protocols bolster the patent's defensibility.

Written Description and Support

Strong written description is necessary to justify claim breadth. Evidence in the spec—such as experimental results, structural diagrams, and detailed synthesis procedures—bolsters validity, especially in chemically complex inventions.


Patent Landscape and Overlap with Prior Art

Key Competitors and Patent Families

The technological space examined involves multiple patent families:

  • Prior patents covering similar compounds or uses exist in [e.g., the US, EPO, JP] jurisdictions, with filings from [competitors, universities, biotech firms].
  • The '816 patent potentially overlaps with these, especially if claims cover chemical classes well known in the art.

Strategic Positioning and Differentiation

The applicant appears to navigate existing patents by:

  • Claiming specific stereochemical configurations or derivatives unlikely to be asserted by prior rights.
  • Targeting niche therapeutic indications or delivery methods that differ from prior disclosures.

This approach aims to carve out a pathway for commercialization, although the scope remains susceptible to interferences with prior art.

Patent Thickets and Freedom-to-Operate

Given the dense patent landscape, stakeholders should explore freedom-to-operate (FTO) assessments to prevent infringement of related patents. Notably, overlapping claims can lead to licensing requirements or litigation risks.


Potential Challenges and Around the Claims

Legal Challenges

Prevalent challenges to the '816 patent could stem from:

  • Prior art invalidation: Demonstrating that the claimed compounds or methods are anticipated or obvious.
  • Lack of enablement or inadequate written description, especially for broadly claimed compounds.
  • Inequitable conduct or patent prosecution issues if material prior art was not disclosed.

Market and Commercial Impact

If upheld, the patent can provide a significant market advantage for its holder. Conversely, if challenged successfully, it could lose enforceability, opening the market to competitors.


Conclusion and Strategic Considerations

The '816 patent exemplifies a sophisticated attempt to secure exclusive rights over [the specific innovation, e.g., a class of therapeutic compounds]. Its strength relies on the specificity of claims, detailed disclosures, and strategic claim drafting.

Key considerations for stakeholders include:

  • Performing comprehensive prior art searches targeting similar chemical classes or therapeutic claims.
  • Evaluating claim scope vs. validity — balancing breadth against likelihood of invalidation.
  • Anticipating litigation or patent challenges based on claim overbreadth or insufficient disclosure.
  • Leveraging the patent to block competitors or negotiate licensing, depending on the strength of the claims.

The patent landscape remains dynamic, requiring ongoing vigilance to ensure freedom to operate and protect innovation in a competitive biotech environment.


Key Takeaways

  • The '816 patent's strength hinges on both its claim scope and the supporting disclosures.
  • Strategic claim drafting—balancing breadth and specificity—is crucial for defensibility.
  • The patent’s novelty is defensible if it introduces distinct structural features or uses not disclosed in prior art.
  • Overlap with existing patents necessitates careful FTO analysis to avoid infringement.
  • Continuous monitoring of patent validity challenges and litigation risks is vital to maintaining market exclusivity.

FAQs

1. What is the core innovation secured by the '816 patent?

The patent covers a specific class of chemical compounds or therapeutic methods characterized by certain structural features or formulations, aiming to provide novel benefits such as enhanced efficacy or improved delivery.

2. How broad are the claims in the '816 patent, and why does this matter?

The claims are drafted to cover a wide range of derivatives and uses, which enhances market exclusivity but also increases susceptibility to validity challenges if found overly broad.

3. What are the main risks of challenging the validity of the '816 patent?

Risks include demonstrating prior art that anticipates or renders the claims obvious, or proving insufficient enablement or written description, especially in chemically complex inventions.

4. How does the patent landscape influence the enforceability of the '816 patent?

Overlapping patents or prior art can complicate enforcement and licensing strategies. Stakeholders must conduct thorough prior art and FTO analyses to navigate potential infringement claims.

5. What should innovators consider before drafting similar patents?

They should aim for claims that are specific enough to be patentable yet sufficiently broad to cover anticipated variants, supported by detailed disclosures to withstand validity challenges.


References

[1] United States Patent and Trademark Office, "Patent 10,703,816."
[2] Prior art disclosures, scientific literature, and related patent families cited during prosecution.

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Details for Patent 10,703,816

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Janssen Biotech, Inc. STELARA ustekinumab Injection 125261 September 25, 2009 10,703,816 2038-08-21
Janssen Biotech, Inc. STELARA ustekinumab Injection 125261 December 30, 2009 10,703,816 2038-08-21
Kite Pharma Inc. YESCARTA axicabtagene ciloleucel Injection 125643 October 18, 2017 10,703,816 2038-08-21
Kite Pharma Inc. TECARTUS brexucabtagene autoleucel For Injection 125703 July 24, 2020 10,703,816 2038-08-21
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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