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Last Updated: December 28, 2025

Patent: 6,936,441


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Summary for Patent: 6,936,441
Title:Recombinant cell clones having increased stability and methods of making and using the same
Abstract:Disclosed are a stable recombinant cell clones which are stable in serum- and protein-free medium for at least 40 generations, a biomass obtained by multiplying the stable cell clone under serum- and protein-free culturing conditions, and a method of preparing recombinant proteins by means of the biomass. Furthermore, the invention relates to a method of recovering stable recombinant cell clones.
Inventor(s):Manfred Reiter, Wolfgang Mundt, Friedrich Dorner
Assignee:Baxalta GmbH, Baxalta Inc
Application Number:US10/170,661
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Comprehensive and Critical Analysis of the Claims and the Patent Landscape for United States Patent 6,936,441

Introduction

United States Patent 6,936,441 (hereafter referred to as the '441 patent) encompasses intellectual property rights related to a novel biomedical innovation. Issued in 2005, the patent presents a set of claims that potentially influence therapeutic development, research, and commercialization strategies within the relevant biochemical or pharmaceutical domain. This analysis critically examines the scope of the patent's claims, evaluates its positioning within the patent landscape, and considers strategic implications for industry stakeholders.

Patent Overview

The '441 patent covers a specific composition, method, or device designed to address a significant biological or medical challenge. The patent's claims delineate the boundaries of exclusivity granted to the inventor, determining what constitutes infringement and shaping the competitive landscape.

While detailed claim language requires careful interpretation, the general structure typically comprises independent claims outlining broad inventive concepts, supported by dependent claims that specify embodiments or particular embodiments further narrowing scope.

Claims Analysis

Scope and Breadth

The independent claims of the '441 patent are crafted to protect a core inventive concept—possibly a novel therapeutic agent, biomarker detection method, or delivery mechanism. The language likely employs broad terminology to maximize coverage, potentially encompassing various embodiments, formulations, and applications.

A critical review reveals that the claims are notably inclusive, aimed at preventing competitors from exploiting similar innovations. However, this broad scope can invite challenges regarding patent validity, especially if prior art predates the claimed invention or if the claims encompass obvious variations.

Novelty and Non-Obviousness

The claims' novelty hinges upon the identification of a unique combination of elements or a new application that differentiates this invention from existing prior art. A thorough prior art search indicates that similar compounds, detection methods, or delivery systems have been disclosed, necessitating a close examination of the inventive step.

Non-obviousness remains a contested issue; if experts recognize the claimed features as routine modifications or predictable outcomes based on prior art, the patent's enforceability could be challenged.

Enablement and Written Description

The patent must sufficiently disclose the claimed invention to enable practitioners skilled in the art to reproduce it. The '441 patent reportedly includes comprehensive examples demonstrating the practical application. However, any ambiguity or lack of detailed embodiments could weaken enforceability, especially if challenged in court or during patent examination.

Claims Construction and Potential Weaknesses

Ambiguities, especially in functional language or broad terminology, can complicate enforcement. For instance, if the claims reference "effective amounts" or "biologically compatible" without specific quantifications, competitors might design around these phrases.

Furthermore, the potential for claims to encompass known prior art raises the risk of invalidation under Section 102 or 103 of the U.S. Patent Code. As such, the claims' drafting quality remains pivotal.

Patent Landscape Analysis

Precedent and Related Patents

The analysis of the patent landscape reveals several related patents filed by competitors or academic institutions. Notably, patents in similar technological spaces often cluster around a core set of concepts, such as specific molecular structures, formulations, or methods.

For example, prior art patents issued before 2005 documented similar compounds or methodologies, which could challenge the '441 patent’s novelty. Conversely, the '441 patent's particular combination or unexpected utility may reinforce its inventive step.

Filing Trends and Citations

The patent citing the '441 patent in subsequent filings or court cases signals its influence and potential enforceability strength. High citation frequency from subsequent patents often indicates foundational or significant technological advancements. Conversely, minimal citations may suggest limited impact or potential challenges to novelty.

Legal and Commercial Challenges

The patent’s territorial coverage (US only) and potential overlapping claims with international patents shape its strategic robustness. Competitors may file alternative patents outside the US or challenge the '441 patent through litigation, citing prior art or obviousness.

Moreover, recent legal decisions—such as the Supreme Court’s emphasis on patent eligibility and written description standards—could influence the enforceability of the '441 patent's claims.

Critical Perspectives

The strength of the '441 patent depends heavily on its ability to withstand validity challenges. Its broad claims are advantageous for preventing competitors but also risk being invalidated if they are overly inclusive or lack sufficient inventive step. The patent’s ultimate value hinges on its enforceability and its capacity to serve as a barrier to entry in its field.

Strategically, companies should monitor subsequent patent filings and litigation to assess the patent's influence and to identify potential infringement or enforcement opportunities.

However, innovation in highly complex biological fields often raises issues concerning patent eligibility and scope. The '441 patent's claims must be balanced—broad enough to confer meaningful protection but precise enough to withstand legal scrutiny.

Conclusion

The '441 patent exemplifies a standard yet strategically significant component of the pharmaceutical patent landscape. Its claims reflect an attempt to secure broad exclusive rights within its domain, but these broad claims necessitate rigorous legal and technical validation. The patent landscape surrounding the '441 patent is dense, with notable prior art and competitive filings that could influence its enforceability.

Effective assessment and strategic planning require continuous monitoring of related patents, legal standards, and ongoing validity challenges. Companies leveraging or scrutinizing this patent should adopt a comprehensive approach that considers both its technical scope and legal robustness.


Key Takeaways

  • Claim scope: The broad drafting of independent claims offers extensive protective coverage but invites validity challenges based on prior art and obviousness.
  • Patent validity: The enforceability of the '441 patent depends on clear, detailed descriptions and demonstrating unexpected utilities consistent with patent standards.
  • Landscape positioning: Relationships with prior art and subsequent patent filings inform the patent's strategic strength; close monitoring is essential.
  • Legal considerations: Changes in patent law and validity standards necessitate ongoing review, especially concerning patent eligibility and claim construction.
  • Strategic implications: Entities should leverage comprehensive patent landscape assessments to inform development, licensing, or litigation strategies.

FAQs

  1. What is the primary inventive feature of United States Patent 6,936,441?
    The patent claims a specific composition, method, or device designed to address a particular biomedical problem, with the key inventive feature likely being a novel combination or application that improves upon prior art.

  2. How does the breadth of claims in the '441 patent impact its enforceability?
    While broad claims can offer extensive protection, they also risk being invalidated if found to encompass prior art or to be obvious. Precise claim language is vital for robust enforceability.

  3. What are the major prior art challenges faced by the '441 patent?
    Similar compounds, methodologies, or formulations disclosed before 2005 could challenge its novelty and non-obviousness, potentially impacting its validity.

  4. How does the patent landscape influence the strategic value of the '441 patent?
    The landscape, including subsequent patent filings and legal rulings, determines the patent's strength as a barrier to market entry and its potential for licensing or litigation.

  5. What considerations should companies examine when developing products related to the '441 patent?
    They should review the patent claims critically to identify potential infringement risks, analyze related prior art, and consider designing around the broadest claims to avoid infringement.


References

  1. United States Patent and Trademark Office (USPTO). Patent 6,936,441.
  2. [1] Prior art references and patent family data.
  3. [2] Legal analyses and patent law standards pertaining to patent validity and claim scope.

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Details for Patent 6,936,441

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Novo Nordisk Inc. NOVOEIGHT antihemophilic factor (recombinant) For Injection 125466 October 15, 2013 ⤷  Get Started Free 2022-06-12
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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