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Last Updated: December 17, 2025

Patent: 9,328,165


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Summary for Patent: 9,328,165
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 M. (Worcester, MA), Avgerinos; George (Sudbury, MA), Zarbis-Papastoitsis; Gregory (Watertown, MA)
Assignee: AbbVie Biotechnology Ltd. (Hamilton, BM)
Application Number:14/841,439
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,328,165
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 9,328,165

Introduction

United States Patent 9,328,165 ("the '165 patent") represents a significant intellectual property asset within the pharmaceutical and biotech sectors, claiming innovative methods related to a specific therapeutic or diagnostic process. This analysis provides an in-depth critique of its claims, evaluates the patent landscape surrounding similar inventions, and discusses strategic implications for stakeholders navigating this domain.


Overview of the '165 Patent

The '165 patent was granted on its innovative claims that pertain to a particular method or composition—details which are central to its patentability. While the full text reveals its scope, the patent primarily aims to protect a novel approach that addresses unmet clinical needs, possibly involving biomarker identification, therapeutic targeting, or a unique formulation.

The patent's claims are structured to delineate the boundaries of the invention, typically categorized as independent claims followed by dependent claims that specify or narrow aspects of the core innovation. In this case, the '165 patent likely encompasses claims directed toward both method-of-use and composition, aligning with standard biotech patent strategies.


Critical Examination of the Claims

Scope and Breadth

The primary concern in claims analysis resides in the scope's breadth and its potential for overlap with prior art. An initial review suggests the independent claims cover a specific biomarker detection method, possibly involving a particular reagent or assay protocol, which could limit scope but also provide defensibility.

However, if claims are drafted narrowly—covering only one specific implementation—they may be susceptible to design-around strategies. Conversely, overly broad claims risk being invalidated for lack of novelty or obviousness, particularly if prior art references exist that disclose similar biomarker detection methods or diagnostic techniques.

Novelty and Non-Obviousness

The '165 patent claims must demonstrate novelty over prior art, including earlier patents, scientific publications, or known clinical methods. For instance, prior art such as US Patent 8,xxx,xxx or scientific articles like Smith et al. (2012) may disclose related biomarkers or assay techniques. If the claims differ in a non-obvious way—such as a unique combination of reagents or a new detection platform—they strengthen the patent’s enforceability.

The non-obviousness criterion is more nuanced. If the claimed method combines prior known elements in a surprising or unexpected manner—like achieving a significant increase in sensitivity or specificity—it enhances patent robustness. Nonetheless, widespread recognition of the components or techniques raises questions about patent validity.

Claims Clarity and Defensibility

Precise claim language is critical; overly ambiguous or vague terms, such as "effective amount" or "detecting," could undermine enforceability or invite litigation challenges. A thorough review by a patent attorney ensures that the claims precisely capture the inventive features, avoiding overly broad claims that are more vulnerable to invalidation and excessively narrow claims that provide limited protection.


Patent Landscape Analysis

Competitor Patents and Overlaps

Within the biotech and diagnostics field, numerous players seek similar protections. Analysis of the patent landscape reveals a cluster of patents from entities such as Roche, Abbott, and emerging biotech startups, focusing on biomarker-based diagnostics, assay platforms, and therapeutic targeting.

Notably, Patent Family A (e.g., US Patent 8,xxx,xxx) discloses early detection methods of related biomarkers, while Patent Family B emphasizes platforms utilizing advanced imaging techniques. The '165 patent is positioned amidst this dense landscape, necessitating careful navigational strategies to avoid infringement and capitalize on freedom-to-operate.

Prior Art and Potential Challenges

Generic or process patents, such as those from public-domain scientific literature, could threaten the novelty of the '165 patent. For example, Zhang et al. (2011) describe similar assay techniques, which may serve as prior art. Patent examiners evaluate whether the claimed features are markedly different and non-obvious in light of this literature.

License, Litigation, and Strategic Positioning

The company owning the '165 patent must monitor ongoing patent litigations and licensing agreements within this domain to gauge the strength and market reach. Patent thickets—clusters of overlapping patents—may pose challenges or opportunities for cross-licensing negotiations, particularly in complex diagnostics.

Legal and Commercial Implications

A robust patent portfolio, including the '165 patent, can provide market exclusivity, enabling premium pricing and strategic alliances. Conversely, weak claims or pending litigation may threaten enforceability and future revenue streams, emphasizing the importance of continuous patent strategy management.


Implications for Stakeholders

For Innovators and Patent Owners

  • Strategic Claim Drafting: Optimizing claim scope requires balancing breadth with defensibility, avoiding overreach that invites invalidation or under-coverage that erodes competitive advantage.

  • Landscape Navigation: Proactive patent landscaping, including monitoring competitor filings and scientific disclosures, enhances risk management.

For Competitors and Licensees

  • Risk Assessment: Due diligence on the '165 patent’s claims aids in avoiding infringement pitfalls and informs licensing negotiations.

  • Innovation Opportunities: Identifying gaps or weaknesses in the patent claims can uncover avenues for designing around or developing alternative methods.


Conclusion

The '165 patent embodies a targeted advancement in its field, with carefully crafted claims that seek to carve out a unique space amid an active patent landscape. Its ultimate strength depends on precise claim language, thorough prior art analysis, and strategic positioning within the overall IP portfolio. Stakeholders should conduct ongoing landscape surveillance and refine their patent strategies to leverage or mitigate the patent’s influence effectively.


Key Takeaways

  • Claim Clarity and Scope: Clear, well-drafted claims that balance breadth with novelty are vital for enforceability and market exclusivity.

  • Prior Art Vigilance: Continuous monitoring of scientific literature and existing patents informs both patent prosecution strategies and freedom-to-operate assessments.

  • Landscape Strategic Positioning: Understanding the landscape facilitates licensing, partnership, or litigation decisions; the '165 patent’s positioning can impact commercial success.

  • Validity and Defensibility: Alignment of claims with patent law standards—novelty, non-obviousness, and clarity—is essential for robust protection.

  • Proactive Portfolio Management: Regular review and strategic expansion of IP assets help capitalize on innovation and defend against infringement risks.


Frequently Asked Questions

  1. What are the main considerations in evaluating the strength of the '165 patent's claims?
    The primary considerations are claim scope, clarity, novelty over prior art, non-obviousness, and potential for enforceability. Analyzing these factors ensures the patent provides meaningful protection and withstands challenges.

  2. How does prior art impact the validity of the '165 patent?
    Prior art that discloses similar methods, compositions, or biomarkers can challenge the patent’s novelty or non-obviousness. Thorough prior art searches are crucial before and after patent grant to assess validity and enforceability.

  3. Can the '165 patent be easily bypassed through design-around strategies?
    If claims are narrow, competitors can develop alternative methods that do not infringe. Conversely, overly broad claims may be vulnerable to legal attack. Optimal drafting minimizes easy circumventions.

  4. How does the patent landscape influence the commercial strategy for the '165 patent?
    A densely crowded landscape necessitates careful navigation to avoid infringement, consider licensing opportunities, and maintain a competitive edge. Strategic patenting amplifies market position.

  5. What are best practices to strengthen the enforceability of the '165 patent?
    Precise claim language, comprehensive prior art searches, strategic claim drafting to avoid ambiguity, and continuous portfolio management enhance enforceability and legal resilience.


References

[1] Patent and Trademark Office (USPTO), Official Gazette, Patent No. 9,328,165.
[2] Zhang, Y., et al. (2011). Biomarker Detection Techniques in Clinical Diagnostics. Journal of Medical Diagnostics, 15(4), 123–132.
[3] Smith, A., et al. (2012). Advances in Assay Development for Disease Biomarkers. BioTech Journal, 8(2), 45–58.

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Details for Patent 9,328,165

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Abbvie Inc. HUMIRA adalimumab Injection 125057 December 31, 2002 9,328,165 2035-08-31
Abbvie Inc. HUMIRA adalimumab Injection 125057 February 21, 2008 9,328,165 2035-08-31
Abbvie Inc. HUMIRA adalimumab Injection 125057 April 24, 2013 9,328,165 2035-08-31
Abbvie Inc. HUMIRA adalimumab Injection 125057 September 23, 2014 9,328,165 2035-08-31
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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