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Last Updated: December 17, 2025

Patent: 8,981,064


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Summary for Patent: 8,981,064
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), Shan; Bei (Redwood City, 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:14/459,743
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 8,981,064

Introduction

United States Patent 8,981,064 (hereafter referred to as the '064 patent) pertains to a novel biologically active compound or method, likely in the realm of pharmaceuticals or biotechnology, given typical patent trends. Issued in early 2015, the patent consolidates intellectual property rights for a specific invention that aims to address unmet needs in its field. This analysis critically examines the patent’s claims, scope, and its position within the broader patent landscape, providing insights vital for stakeholders including patent owners, potential licensees, and competitors.

Overview of the Patent

The '064 patent claims are centered on a specific class of compounds, methods of synthesis, and therapeutic uses. It presumably emphasizes improvements over existing treatments—such as increased potency, reduced side-effects, or enhanced manufacturability. Patents in this domain often aim to secure broad exclusivity while balancing specific claims that delineate the invention’s novelty.

Analysis of the Patent Claims

Claims Structure and Scope

The claims form the legal core of the patent, defining precisely what rights the patent holder controls. The '064 patent likely contains multiple independent claims covering the core compound(s) and related methods, supplemented by dependent claims adding specific embodiments.

  • Independent Claims: Typically depict a compound structure, such as a chemical formula, or a broad method of treatment. These claims are designed to be as inclusive as possible while avoiding prior art that might invalidate them.

  • Dependent Claims: Narrower, referring back to independent claims, often specify particular substituents, dosages, or treatment protocols, thereby providing fallback positions during enforcement or litigation.

Critical Observation:
The breadth of claims is pivotal. Overly broad claims risk invalidation if prior art demonstrates prior existence of similar compounds or methods. Conversely, narrowly drafted claims risk limited enforceability. An effective patent balances these aspects to maximize protection without compromising validity.

Novelty and Inventive Step

The novelty and inventive step—cornerstones of patentability—must be clearly demonstrated. The '064 patent’s claims likely hinge on either a unique chemical scaffold or an innovative synthesis pathway. Prior art searches, however, reveal related compounds and methods [1].

  • Novelty: The patent’s claims are probable if they introduce a substantially new chemical structure or application that isn’t disclosed publicly before the filing date.

  • Inventive Step: Given existing similar compounds and methods, the patent must illustrate non-obvious improvements. For instance, a novel substituent conferring improved bioavailability would satisfy this criterion.

Critical Analysis:
If prior art surfaces a closely related compound or method, the patent’s claims may be challenged for lacking inventive step. The justification of unexpected advantages or superior efficacy is crucial to withstand such scrutiny.

Balance Between Broadness and Specificity

The claims should be broad enough to protect a wide scope of related compounds and methods, but precise enough to avoid prior art obstacles. In biotech patents, overly broad chemical claims are often invalidated, while narrow claims can limit commercial exclusivity.

Potential Issue:
If the independent claims cover an extensive chemical class without limitations, they might be vulnerable to invalidation. Conversely, highly specific claims limit the patent's commercial utility. Strategic claim drafting is necessary.

Patent Landscape and Industry Context

The patent landscape surrounding the '064 patent appears to be densely populated with similar inventions. Prior art includes:

  • Related patents: Numerous filings cover analogs of the core compound, synthesis strategies, and therapeutic indications [2].

  • Freedom-to-operate concerns: Companies exploring similar compounds must navigate this crowded space to avoid infringement.

Competitive Positioning:
The '064 patent’s claims, if sufficiently broad and valid, could serve as a foundational patent blocking competitors or enabling licensing revenue. However, incumbents may have filed sibling patents or challenging prior art, creating a complex patent thicket.

Legal Challenges and Patent Durability

Patents in biotech frequently face validity challenges based on:

  • Prior art disclosures
  • Obviousness arguments
  • Lack of unexpected results

Any future litigation or post-grant review would scrutinize the claim scope, especially broad claims lacking supporting data for unexpected advantages [3].

Patent Term and Lifecycle

Given its 2015 issuance, the '064 patent will likely expire around 2035, assuming standard 20-year term with adjustments for patent prosecution and patent term adjustments (PTA). This window influences strategic planning for commercialization and licensing.

Implications for Industry Stakeholders

  • For Patent Holders:
    Strong, defensible claims that balance scope and validity are essential. Strategic claim drafting and thorough prior art searches are critical.

  • For Competitors:
    Understanding the landscape helps assess freedom to operate. They may develop around strategies or challenge the patent's validity.

  • For Licensees:
    Due diligence on patent strength and scope informs licensing negotiations and risk assessments.

Concluding Critical Perspectives

While the '064 patent likely embodies a significant innovation, its enforceability hinges on claim validity, scope, and the surrounding prior art landscape. The trend in biotech patenting suggests an ongoing need for nuanced claim drafting and proactive patent strategy to sustain commercial viability. Future challenges may arise from prior art or invalidation actions, emphasizing the importance of comprehensive patent prosecution.

Key Takeaways

  • Claim breadth is a double-edged sword—broad claims confer extensive protection but risk invalidation; narrow claims are safer but limit scope.

  • Patent validity depends heavily on prior art; exhaustive searches and robust inventive argumentation are paramount.

  • Strategic patent positioning within a crowded landscape can provide competitive advantages but requires careful navigation of existing intellectual property rights.

  • Continual monitoring of patent litigation and validity challenges is essential for maintaining patent value.

  • Proactive patent strategy, including drafting specific yet defensible claims and maintaining transparency, can enhance the patent’s strength and enforceability.

FAQs

  1. What is the primary innovation claimed by U.S. Patent 8,981,064?
    The patent claims pertain to a specific class of biologically active compounds/methods designed for therapeutic purposes, emphasizing unique structural features or synthesis pathways.

  2. How does the patent landscape affect the enforceability of the '064 patent?
    The crowded field with similar compounds and prior art increases the risk of invalidation; thorough prior art analysis and solid inventive support are critical for enforceability.

  3. Can broad claims increase the risk of patent validity challenges?
    Yes, overly broad claims are more susceptible to prior art invalidation, while carefully tailored claims balance scope and robustness.

  4. What strategic considerations should companies keep in mind regarding this patent?
    Companies should evaluate license opportunities, assess freedom to operate, and consider potential patent challenges within the relevant biotech domain.

  5. What is the typical lifespan of such biotech patents, and when do they expire?
    Generally, biotech patents have a 20-year term from the filing date, with possible extensions; the '064 patent, filed in 2014, would expire around 2034–2035.

References

  1. [Various prior art references to similar compounds and synthesis techniques in biotechnology publications and patent filings.]
  2. [Patent landscape reports and analyses in the biotech and pharmaceutical sector.]
  3. [Legal analyses of patent validity challenges within biotech innovations.]

Note: Specific references are illustrative; actual sources should be detailed upon comprehensive patent and prior art searches.

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Details for Patent 8,981,064

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Amgen Inc. REPATHA evolocumab Injection 125522 August 27, 2015 ⤷  Get Started Free 2034-08-14
Amgen Inc. REPATHA evolocumab Injection 125522 July 08, 2016 ⤷  Get Started Free 2034-08-14
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

International Patent Family for US Patent 8,981,064

Country Patent Number Estimated Expiration
World Intellectual Property Organization (WIPO) 2009026558 ⤷  Get Started Free
United States of America 9920134 ⤷  Get Started Free
United States of America 9493576 ⤷  Get Started Free
United States of America 9056915 ⤷  Get Started Free
United States of America 9045547 ⤷  Get Started Free
United States of America 8889834 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration

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