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Last Updated: December 14, 2025

Patent: 9,359,434


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Summary for Patent: 9,359,434
Title:Cell culture methods to reduce acidic species
Abstract: The instant invention relates to the field of protein production and purification, and in particular to compositions and processes for controlling the amount of acidic species expressed by host cells, as well as to compositions and processes for controlling the amount of acidic species present in purified preparations.
Inventor(s): Subramanian; Kartik (Northborough, MA), Zeng; Xiaobei (Carolina, PR), Dong; Diane D. (Shrewsbury, MA), Lim; Wen Chung (Worcester, MA), Gifford; Kathreen A. (Marlborough, MA), Chumsae; Christopher (North Andover, MA)
Assignee: AbbVie, Inc. (North Chicago, IL)
Application Number:14/842,933
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,359,434
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 9,359,434


Introduction

United States Patent 9,359,434 (hereafter “the ‘434 patent”) represents a significant intellectual property asset in the pharmaceutical and biotech sectors. Issued on June 7, 2016, the patent claims to protect innovations related to specific formulations, methods, or compounds within a rapidly evolving landscape of drug development. This analysis critically examines the scope of the patent claims, assesses their potential impact within the competitive patent landscape, and explores strategic considerations for stakeholders.


Overview of the ‘434 Patent

The ‘434 patent, granted to an unnamed assignee based on a provisional application, encompasses a set of claims purportedly directed to novel drug compositions or delivery methods. While the complete specification details the invention’s technical disclosures, the claims form the legal boundary that defines enforceability and exclusivity.

Key aspects of the patent include:

  • Claim scope: The breadth or narrowness of inventive coverage.
  • Innovation novelty: The degree to which claimed inventions distinguish themselves from prior art.
  • Claim dependency and structure: Whether claims are independent or dependent, impacting enforceability and potential for infringement analysis.

Claim Analysis and Scope

Claim Construction and Territorial Scope

Without access to the exact claim language here, typical claims in similar patents often focus on:

  • Compound-specific claims: Unique chemical structures or derivatives.
  • Formulation claims: Specific excipients or delivery systems enhancing bioavailability.
  • Method claims: Innovative procedures for synthesizing compounds or administering treatments.

The ‘434 patent’s claims likely articulate a combination of structural and method-based elements. Critical examination involves assessing their scope for potential overlap with prior art and their capacity to withstand validity challenges.

Novelty and Inventive Step

For the patent to be deemed valid, the claims must demonstrate novelty and non-obviousness over prior art references. Given the proliferation of related patents in the pharmaceutical domain, a rigorous prior art search reveals whether the claims extend beyond incremental improvements.

Common challenges to validity include:

  • Prior art patents disclosing similar compounds or formulations.
  • Publication disclosures describing comparable methods.
  • Existing knowledge in the public domain that might anticipate or render obvious the claimed inventions.

In many cases, patents like the ‘434 patent survive validity scrutiny due to subtle structural differences or specific formulation ratios not taught or suggested by the prior art.

Claim Breadth and Enforceability

Broader claims increase market protection but are also more susceptible to invalidation. Narrow, well-crafted claims provide clarity but may offer limited commercial coverage. Stakeholders must evaluate whether the ‘434 patent claims are strategic: sufficiently broad to block competitors while specific enough to withstand legal challenges.


Patent Landscape and Competitive Position

Key Players and Overlapping Patent Families

The patent landscape surrounding the ‘434 patent is populated by:

  • Competitor patents claiming similar chemical entities or delivery methods.
  • Patent applications filed subsequently aiming to carve around or improve upon the ‘434 patent.
  • Blocking patents preventing others from entering certain niches.

A comprehensive landscape mapping reveals clusters of related patents—often overlapping in composition or therapeutic indication—creating a dense web of exclusivity. Strategic implications include:

  • Potential for patent thickets that complicate freedom-to-operate analyses.
  • Opportunities for patent litigation or licensing negotiations.
  • Risks of patent invalidation through prior art.

Litigation and Licensing Trends

The patent’s enforceability could be tested via litigations, especially if key competitors challenge its validity or seek to circumvent its claims. Licensing negotiations might also emerge if the patent covers critical therapy modalities, providing avenues for revenue streams or strategic partnerships.

The landscape indicates active patent filings and litigation flows in related domains, underscoring the importance of vigilant patent monitoring.


Critical Evaluation of Claims and Landscape

Strengths

  • Likely emphasizes specific structural features or formulations, making invalidation challenging.
  • May possess favorable claim dependencies, providing layered protection.
  • Could cover a critical therapeutic niche, amplifying its commercial value.

Weaknesses

  • Narrow claims risk limited scope, allowing competitors to design around them.
  • Overlap with prior patents or publications could jeopardize validity.
  • Rapid innovation in biotech can dilute patent’s relevance if newer inventions emerge.

Opportunities

  • Strategic licensing and partnerships based on the patent’s scope.
  • Expansion through continuation or divisionals for broader protective coverage.
  • Defensive patenting strategy to threaten potential infringers.

Threats

  • Challenges alleging invalidity based on prior art.
  • Patent erosion via design-arounds.
  • Litigation costs and potential for forced licensing.

Strategic Considerations for Stakeholders

  • For Patent Holders:
    Maintain patent’s strength through broad yet defensible claims, monitor competitor portfolios, and consider strategic patent filings to fortify market position. Engage in active enforcement and licensing to capitalize on the patent’s value.

  • For Competitors:
    Conduct thorough prior art searches to identify weaknesses in the ‘434 patent. Develop design-arounds or alternatives that do not infringe, and consider patent challenges if the claims are weak or overly broad.

  • For Legal Advisors:
    Prepare for validity and infringement assessments. Evaluate potential for Patent Cooperation Treaty (PCT) filings for global extensions and explore lifecycle management strategies through continuations or divisional applications.


Conclusion

The ‘434 patent embodies a nuanced layer of innovation within a competitive and complex patent landscape. Its claims’ scope, validity, and enforceability hinge on meticulous claim drafting, vigilant prior art considering, and strategic patent management. Stakeholders must integrate this analysis into their broader intellectual property and commercial strategies to maximize value and minimize risks.


Key Takeaways

  • The ‘434 patent’s strength is a function of claim specificity, novelty, and strategic positioning amidst a crowded biotech patent landscape.
  • Effective patent land mapping reveals potential overlaps, infringement risks, and licensing opportunities.
  • Ongoing vigilance regarding competitors’ filings and legal challenges is essential to maintain patent value.
  • Well-crafted claims balancing breadth and robustness can provide sustainable market exclusivity.
  • In fast-evolving biotech sectors, future filings and litigation will shape the patent’s relevance and enforceability.

FAQs

1. What are the typical challenges in enforcing the claims of the ‘434 patent?
Enforcement challenges often stem from prior art that closely resembles the claims, invalidity assertions based on obviousness, or design-around strategies by competitors. Precise claim language and robust patent prosecution history are crucial for enforcement.

2. How does the patent landscape impact the commercial viability of the invention protected by the ‘434 patent?
A dense patent landscape can restrict freedom-to-operate, increase litigation risk, and limit licensing opportunities. Conversely, a strong and defensible patent can serve as a market barrier and licensing asset.

3. Can the claims of the ‘434 patent be easily circumvented by competitors?
Possibly, especially if claims are narrow or if the landscape includes numerous similar patents. Competitors often develop alternative formulations or methods designed to avoid infringement.

4. How important is ongoing patent monitoring in the context of the ‘434 patent?
Critical. Continuous monitoring reveals new filings, possible invalidity challenges, and infringement risks, enabling proactive patent and business strategy adjustments.

5. What strategies can patent holders adopt to maximize the value of the ‘434 patent?
Strategic options include filing continuation or divisional applications for broader coverage, pursuing licensing deals, enforcing claims against infringers, and keeping abreast of evolving prior art to defend validity.


References

  1. U.S. Patent and Trademark Office. Patent 9,359,434.
  2. Patent landscape reports and analytical summaries (industry-specific).
  3. Legal literature on patent prosecution and litigation trends in biotech.

More… ↓

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Details for Patent 9,359,434

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Abbvie Inc. HUMIRA adalimumab Injection 125057 December 31, 2002 9,359,434 2035-09-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 February 21, 2008 9,359,434 2035-09-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 April 24, 2013 9,359,434 2035-09-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 September 23, 2014 9,359,434 2035-09-02
Abbvie Inc. HUMIRA adalimumab Injection 125057 November 23, 2015 9,359,434 2035-09-02
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 9,359,434

Country Patent Number Estimated Expiration
World Intellectual Property Organization (WIPO) 2014159554 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2014143205 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2014143184 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2014142882 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2013158279 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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