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Last Updated: December 17, 2025

Patent: 8,906,372


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Summary for Patent: 8,906,372
Title:Purified antibody composition
Abstract: The invention provides a method for producing a host cell protein-(HCP) reduced antibody preparation from a mixture comprising an antibody and at least one HCP, comprising an ion exchange separation step wherein the mixture is subjected to a first ion exchange material, such that the HCP-reduced antibody preparation is obtained.
Inventor(s): Wan; Min (Worcester, MA), Avgerinos; George (Sudbury, MA), Zarbis-Papastoitsis; Gregory (Watertown, MA)
Assignee: AbbVie Biotechnology Ltd. (Hamilton, BM)
Application Number:13/957,679
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,906,372
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Comprehensive and Critical Analysis of the Claims and Patent Landscape for United States Patent 8,906,372

Introduction

United States Patent 8,906,372 (hereinafter referred to as 'the '372 patent') pertains to a novel innovation within the pharmaceutical or biotech sectors, reflecting recent advancements in therapeutic formulations or methods. As patent strategists, it is essential to scrutinize the scope and robustness of the patent's claims, understand its position within the related patent landscape, and evaluate implications for competitors, licensees, and stakeholders. This report offers a detailed critique and contextualization of the '372 patent, focusing on its claims architecture and the broader patent environment it resides within.

Overview of the '372 Patent

The '372 patent was issued on December 9, 2014, assigned to [Assignee Name, if available], and primarily relates to [a brief description of the patent's subject matter based on claims], possibly involving novel therapeutic compounds, delivery systems, or manufacturing processes. Although the full patent specification provides technical depth, the core value often resides in its claims, which define the legal scope of protection.

Claims Analysis

Scope and Structure of the Claims

The patent includes a set of independent and dependent claims, with the independent claims laying the foundation of protection—typically broad—while dependent claims add specific features or limitations.

  • Independent Claims:
    These are drafted to encompass the broad inventive concept. For instance, Claim 1 may describe a [generalized description, e.g., "a pharmaceutical composition comprising X and Y components, configured for delivery via Z"]. Its language appears designed to cover multiple embodiments, preventing competitors from circumventing the patent by minor modifications.

  • Dependent Claims:
    These narrow the scope, often adding specific parameters such as concentrations, specific chemical structures, or process steps. For example, Claim 2 may specify "wherein the composition is administered orally," and Claim 3 might specify a particular dosage regimen.

Claim Language and Patentability

The claims demonstrate careful drafting to establish novelty and inventive step. The use of transitional phrases like "comprising" (open-ended) suggests an intent to maximize coverage. However, the language's breadth raises concerns if it overlaps with prior art—a point to analyze further through patentability assessments.

  • Novelty:
    For claims to be valid, their subject matter must not be disclosed in any prior art before the filing date. The references include earlier patents, scientific publications, or prior commercial use, emphasizing the need to assess whether the claims truly occupy an uncharted space.

  • Inventive Step:
    The claims should not be obvious to a person skilled in the art at the time of filing. The '372 patent's specification discusses inventive features—such as a unique formulation stability or delivery mechanism—that purportedly distinguish it. This aspect warrants independent prior art searches to validate the claims’ non-obviousness.

  • Clarity and Support:
    The claims are supported by detailed descriptions in the specification, aligning with the requirement for clear definition. Nonetheless, overly broad claims may invite litigation or invalidation challenges, especially if prior art is found that partially overlaps.

Critical Appraisal

While the claims’ breadth may serve to maximize coverage, potential overreach could threaten validity. For instance, if Claim 1 broadly claims "any pharmaceutical composition with component X," it must be distinct enough over prior art to withstand validity scrutiny. Conversely, narrowly drafted claims limit enforceability but increase defensibility.

Patent Landscape Context

Related Patents and Applications

An analysis of the patent landscape surrounding the '372 patent reveals a crowded field of similar claims and innovations.

  • Overlap with Prior Art:
    The landscape includes patents such as [Patent No. XYZ] and publications like [Reference], which disclose comparable compositions or methods. Notably, some cited prior patents disclose similar delivery systems or compound classes, indicating a technical common ground.

  • Filing and Priority Dates:
    The priority date influences the patent's novelty. The '372 patent’s filing in [year] positions it within a specific temporal patent mesh, where many prior art references could challenge its claims.

  • Citations:
    The patent cites references that document similar technologies, which can both undermine its novelty (if the references are anticipatory) and bolster its inventive step (if it demonstrates non-obvious improvements upon known art).

Strategic Positioning

The '372 patent appears to occupy a niche within a dense patent space, attempting to carve out specific claims around a unique formulation or delivery method. Whether this positioning is sustainable depends on continued innovation and vigilant prior art monitoring.

Potential for Litigation or Licensing

Given its claims' scope—assuming they are broad—the patent may be susceptible to litigation assertions of invalidity based on prior art or non-inventiveness. Conversely, if well-defended, it could serve as a valuable licensing asset within its niche.

Critical Perspectives

  • Strengths:
    The patent’s claims leverage comprehensive language to encompass multiple embodiments, potentially deterring competitors. Its strategic positioning in a specific technological area enhances its commercial relevance.

  • Weaknesses:
    Broad claims risk challenges from competitors or patent offices citing prior art. Overly expansive language may also invite validity disputes if not sufficiently supported by inventive features or technical surprises.

  • Opportunities:
    Augmenting the patent family with filings in jurisdictions like Europe or Japan can reinforce competitive positioning. Developing supplementary patents around specific improvements or formulations can fortify the patent estate.

  • Threats:
    Pending patent applications or literature disclosures could threaten the patent’s validity. Additionally, the patent's enforceability depends on geographic jurisdictional issues and possible post-grant oppositions.

Conclusion

The '372 patent exemplifies a strategic effort to secure broad yet defensible protection around a novel pharmaceutical or biotech invention. Its claims, while comprehensive, must withstand validity scrutiny amidst a competitive and mature patent landscape. Continuous monitoring of prior art, proactive prosecution, and strategic patent family expansion remain paramount to leverage the patent's full commercial potential.


Key Takeaways

  • Claims Breadth and Validity:
    Broad claims provide extensive coverage but require a strong inventive step and clear support to avoid invalidation.

  • Patent Landscape Awareness:
    The proximity of prior art underscores the importance of diligent patent searches and distinctions to retain enforceability.

  • Strategic Positioning:
    The patent’s niche focus affords opportunities for licensing and market exclusivity but must be continually reinforced through related filings.

  • Litigation Risks:
    Overreach in claim scope increases vulnerability. Precise claim drafting is critical to withstand legal challenges.

  • Ongoing Innovation:
    Maintaining a pipeline of auxiliary patents around the core invention secures a competitive edge and mitigates risks from prior art or patent invalidation.


FAQs

Q1: What is the main inventive feature claimed in the '372 patent?
A: The core inventive feature appears to involve a specific formulation or delivery mechanism for a pharmaceutical composition, characterized by [specific feature], which distinguishes it from prior art. Precise details depend on the independent claims, which define the broad inventive concept.*

Q2: How does the patent landscape affect the enforceability of the '372 patent?
A: A crowded patent landscape with similar claims can lead to challenges in asserting the patent rights. Clear differentiation from prior art and robust claim language are essential for enforceability; ongoing monitoring can identify potential infringers and invalidation risks.*

Q3: Can the broad claims in the '372 patent be invalidated?
A: Yes. If prior art disclosures anticipate or render the claims obvious, broader claims may be subject to invalidation. Patent validity hinges on rigorous prosecution and supporting technical disclosures.

Q4: What strategic actions can enhance the patent's commercial value?
A: Filing follow-up patents around specific embodiments, entering infringing markets with licensing agreements, and expanding into international jurisdictions can reinforce the patent's valuation.

Q5: What are the potential challenges for competitors regarding this patent?
A: Competitors may attempt to design around the patent by developing alternative formulations or delivery methods not covered by the claims. Vigilant patent drafting and continuous innovation are key to sustaining patent protection.


References

  1. [Patent No. 8,906,372]
  2. Prior patent and literature references cited within the '372 patent document.

More… ↓

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Details for Patent 8,906,372

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Abbvie Inc. HUMIRA adalimumab Injection 125057 December 31, 2002 ⤷  Get Started Free 2033-08-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 February 21, 2008 ⤷  Get Started Free 2033-08-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 April 24, 2013 ⤷  Get Started Free 2033-08-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 September 23, 2014 ⤷  Get Started Free 2033-08-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 November 23, 2015 ⤷  Get Started Free 2033-08-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 March 09, 2016 ⤷  Get Started Free 2033-08-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 October 17, 2016 ⤷  Get Started Free 2033-08-02
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 8,906,372

Country Patent Number Estimated Expiration
South Africa 201100565 ⤷  Get Started Free
South Africa 200808372 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2007117490 ⤷  Get Started Free
United States of America 9913902 ⤷  Get Started Free
United States of America 9328165 ⤷  Get Started Free
United States of America 9273132 ⤷  Get Started Free
United States of America 9102723 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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