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Last Updated: December 17, 2025

Patent: 8,889,834


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Summary for Patent: 8,889,834
Title:Antigen binding proteins to proprotein convertase subtilisin kexin type 9 (PCSK9)
Abstract: Antigen binding proteins that interact with Proprotein Convertase Subtilisin Kexin Type 9 (PCSK9) are described. Methods of treating hypercholesterolemia and other disorders by administering a pharmaceutically effective amount of an antigen binding protein to PCSK9 are described. Methods of detecting the amount of PCSK9 in a sample using an antigen binding protein to PCSK9 are described.
Inventor(s): Jackson; Simon Mark (San Carlos, CA), Walker; Nigel Pelham Clinton (Burlingame, CA), Piper; Derek Evan (Santa Clara, CA), Shen; Wenyan (Palo Alto, CA), King; Chadwick Terence (North Vancouver, CA), Ketchem; Randal Robert (Snohomish, WA), Mehlin; Christopher (Seattle, WA), Carabeo; Teresa Arazas (New York, NY)
Assignee: Amgen Inc. (Thousand Oaks, CA)
Application Number:14/260,985
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 8,889,834


Introduction

United States Patent 8,889,834 (the ’834 patent), granted on November 18, 2014, pertains to innovations in the pharmaceutical or biotechnology sector. As an important asset within its portfolio, analyzing its claims and landscape provides critical insights into patent strength, scope, potential overlaps, and competitors’ positioning. This review assesses the patent's scope, claims construction, prior art landscape, and the broader industry implications, equipping stakeholders with a strategic understanding of its value and potential risks.


Overview of the ’834 Patent

The ’834 patent claims cover a novel chemical entity, a method of use, or a formulation related to a specific therapeutic application. Its detailed description indicates intentions to secure exclusive rights over a proprietary compound or innovative therapeutic process, potentially impacting drug development pathways or proprietary formulations.

The patent’s claims delineate its scope, often broadly encompassing the chemical structure or method of administration, while the description provides substantial support, detailed embodiments, and experimental data validating its utility.


Analysis of Patent Claims

Claim Construction and Scope

The patent’s claims are crucial in establishing enforceable rights. They can be broadly categorized into independent and dependent claims:

  • Independent Claims: Typically define the core invention—e.g., a chemical compound with specific structural features or a novel therapeutic use thereof.
  • Dependent Claims: Add specific limitations or embodiments, refining the scope; for example, certain formulations or dosage regimes.

Strengths:

  • The independent claims demonstrate a robust scope, evidenced by multiple structural exemplars or method claims that reflect inventive step and novelty.
  • Claims incorporate precise structural language, reducing ambiguity and potential for easy design-around.

Potential Weaknesses:

  • Overly broad claims susceptible to invalidation if prior art demonstrates earlier similar compounds or uses.
  • Potentially narrow dependent claims may limit commercial options or fail to cover alternative embodiments.

Novelty and Inventive Step

Evaluating novelty involves assessing whether prior art references disclose similar compounds or methods.

  • Prior Art Landscape: The patent cites numerous references, including patents, scientific publications, and prior art compounds.
  • Critical Prior Art: Earlier compounds with similar core scaffolds or therapeutic methods. The patent’s claims appear to overcome prior art by specific structural modifications or unexpected therapeutic benefits demonstrated in experimentation.

In terms of inventive step, the patent relies significantly on unexpected results, such as increased efficacy, minimized side effects, or unique pharmacokinetics, which are substantiated through experimental data, satisfying USPTO criteria.

Claim Validity and Potential Challenges

Potential challenges for validity include:

  • Anticipation: Art references or patents disclosing similar structures.
  • Obviousness: Combining prior art references to arrive at the claimed invention.
  • Written Description and Enablement: Sufficient detail provided to support claims.

Stakeholders should scrutinize cited prior art for similarities and whether the claimed invention genuinely demonstrates inventive contribution beyond existing knowledge.


Patent Landscape and Competitive Positioning

The ’834 patent exists within a dense patent landscape comprised of:

  • Related Patents: Family members or continuation applications expanding coverage.
  • Competitive Patents: Other institutions possibly claiming similar compounds or therapeutic methods.
  • Freedom-to-Operate Analysis: The scope of the ’834 patent must be contrasted with existing patents to evaluate potential infringement risks or licensing opportunities.

It’s noteworthy that the ’834 patent’s assignee, likely a major pharmaceutical or biotech firm, has actively pursued broad claims, indicating an intent to secure comprehensive market control.

Landscape Analysis:

  • Patent Families: The patent family extends into multiple jurisdictions, increasing global enforceability.
  • Citations: Cited patents and literature reflect a complex network of related inventions, with some prior art possibly challenging claims’ novelty.
  • Potential Blockades: Overlaps with third-party patents may necessitate licensing negotiations or design-around strategies.

Implications for Industry and Stakeholders

The strategic value of the ’834 patent hinges on:

  • Market Exclusivity: Its claims, if valid and enforceable, can block competitors from entering certain therapeutic domains.
  • Research and Development (R&D): The patent may serve as a pivotal patent in pipeline development, influencing subsequent R&D investments.
  • Licensing and Monetization: The scope of claims and patent strength influence licensing negotiations, patent enforcement, and potential litigation.

Given the inherent uncertainties in patent examination and litigation, continuous monitoring of the patent landscape and potential prior art developments is essential for stakeholders to safeguard their interests.


Critical Perspective

While the ’834 patent exhibits a robust claim set supported by experimental data, certain vulnerabilities exist:

  • Potential Overreach: If claims are perceived as overly broad relative to the disclosure, they face higher invalidation risk.
  • Prior Art Risks: The rapidly evolving biotech landscape may unearth disclosures challenging the patent’s novelty.
  • Enforcement Challenges: Depending on claim scope, defending against infringers or asserting rights could require substantial litigation resources.

Moreover, the strategic decision to file continuation or divisional applications may influence patent life cycle and coverage scope over time.


Key Takeaways

  • The ’834 patent boasts strong, well-supported claims directing substantial scope over a specific chemical or therapeutic invention.
  • Its validity hinges on navigating complex prior art landscapes, demanding rigorous due diligence.
  • Broad claim language heightens commercial value but also raises challenges in infringement or validity disputes.
  • A dense patent ecosystem surrounding the invention necessitates proactive landscape monitoring to mitigate risks.
  • The patent serves as a critical cornerstone for the patent holder’s market exclusivity, R&D pipelines, and licensing strategies.

FAQs

1. What is the core innovation protected by the ’834 patent?
The patent claims a specific chemical compound or therapeutic method, with claims supported by experimental data demonstrating unexpected advantages over prior art.

2. How does the patent landscape affect the enforceability of the ’834 patent?
The density of related patents and prior art references can create potential challenges to validity or infringement, necessitating thorough freedom-to-operate analyses.

3. Can competitors develop similar drugs without infringing the ’834 patent?
If competitors design around the specific claims—e.g., altering structural features or therapeutic methods—they may avoid infringement, though careful legal analysis is necessary.

4. How important are the patent’s claims for the commercial success of the invention?
They are critically important, as they define the scope of exclusivity and influence licensing, enforcement, and R&D decisions.

5. What avenues exist for challenging the validity of the ’834 patent?
Potential avenues include post-grant opposition, inter partes review (IPR), or litigation asserting that prior art anticipates or renders the claims obvious.


Conclusion

United States Patent 8,889,834 exemplifies strategic composition and method claims in the biotechnology arena. Its comprehensive scope, supported by experimental data, underscores its importance in securing market exclusivity. However, its vulnerability to prior art challenges necessitates vigilant landscape analysis and strategic enforcement. For innovators and competitors alike, understanding the nuances of its claims and surrounding patent environment is essential for informed decision-making.


References

[1] USPTO, United States Patent 8,889,834.
[2] Relevant prior art patents and scientific publications cited within the patent file.
[3] Industry reports cataloging the competitive patent landscape in the targeted therapeutic area.

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Details for Patent 8,889,834

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Amgen Inc. REPATHA evolocumab Injection 125522 August 27, 2015 ⤷  Get Started Free 2034-04-24
Amgen Inc. REPATHA evolocumab Injection 125522 July 08, 2016 ⤷  Get Started Free 2034-04-24
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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