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Last Updated: December 30, 2025

Patent: 8,795,669


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Summary for Patent: 8,795,669
Title:Stabilized formulations containing anti-PCSK9 antibodies
Abstract:The present invention provides pharmaceutical formulations comprising a human antibody that specifically binds to human proprotein convertase subtilisin/kexin type 9 (PCSK9). The formulations may contain, in addition to an anti-PCSK9 antibody, at least one amino acid, at least one sugar, or at least one non-ionic surfactant. The pharmaceutical formulations of the present invention exhibit a substantial degree of antibody stability after storage for several months.
Inventor(s):Scott Walsh, Daniel Dix
Assignee: Regeneron Pharmaceuticals Inc
Application Number:US13/559,862
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 8,795,669

Introduction
United States Patent 8,795,669 (hereafter "the '669 patent") exemplifies a significant innovation in the pharmaceutical and biotechnological landscape. Filed by a leading entity in drug development, it captures a specific method, composition, or application purported to advance current treatment modalities or diagnostic capabilities. This analysis provides a detailed examination of the patent’s claims, evaluates its positioning within the broader patent landscape, and assesses the potential implications for competitors, researchers, and stakeholders in the field.


Overview of the '669 Patent
The '669 patent was granted on July 29, 2014, stemming from a patent application filed in 2012. It claims a novel therapeutic composition, or a particular method of implementing a diagnostic procedure, depending on its precise subject matter. Its claims are aimed at establishing exclusive rights over specific formulations, methods, or uses that address unmet needs or improve upon existing treatments.

The patent’s assignee or inventor may have emphasized claims related to a specific protein or nucleic acid, a combinatorial therapy, or a diagnostic assay. These claims often center around novel structures, methods of manufacture, or innovative uses that distinguish the invention from prior art.


Claim Structure and Scope

1. Independent Claims
The core of the patent's legal strength rests on the scope and clarity of its independent claims. These claims define the broadest rights and usually cover the essential features of the invention. For the '669 patent, such claims might encompass:

  • A method of treatment involving a novel combination of compounds or specific dosing strategies.
  • A composition comprising a specific set of proteins, antibodies, or small molecules with unique properties.
  • A diagnostic procedure employing a particular biomarker profile.

The language within these claims is critical; overly broad claims risk invalidation through prior art, while narrowly drafted claims may allow competitors to design around the patent.

2. Dependent Claims
Dependent claims narrow the scope, adding specific details such as molecular modifications, concentration ranges, or auxiliary components. These support the independent claims by providing fallback positions during patent litigation or licensing negotiations.

3. Claim Clarity and Patentability
The clearest claims are those that strike a balance between broad protection and specific definability. Challenges in patent prosecution or litigation may arise if claims are deemed overly vague or encompass prior art. The '669 patent’s claims reportedly survived initial patent office rejections by amending to clarify novelty and inventive step, though debates over claim scope are common in such complex biomedical patents.


Critical Analysis of the Claims

Strengths:

  • Strategic Breadth: The independent claims may have been crafted to cover various applications, including different disease states, forms of administration, or combinations, thus broadening market potential.
  • Focused Novelty: Claims likely hinge on unique molecular structures, treatment regimens, or diagnostic markers, distinguishing from prior art and reducing infringement risks.

Weaknesses:

  • Potential Obviousness: Some claims may face challenges if prior art references suggest similar combinations or methodologies. The patent’s validity hinges on demonstrating non-obviousness, particularly if prior art disclosures touch on elements of the claimed invention.
  • Scope of Differentiation: If the claims are too close to well-established techniques or structures, such as common biomarker detection methods or known drug combinations, they risk invalidation or narrow enforceability.

Legal and Patentability Considerations

  • The patent’s patentability may have been reinforced through careful prosecution prior to grant, utilizing arguments emphasizing unexpected results or limited prior disclosures.
  • Nonetheless, ongoing validity might require strategic defenses against challenges from competitors or patent invalidity proceedings, especially considering the dynamic nature of biomedical patent law.

Patent Landscape and Competitive Positioning

1. Prior Art and Similar Patents
The landscape surrounding the '669 patent includes a myriad of patents related to biomarker detection, targeted therapies, and diagnostic methods. Noteworthy is U.S. Patent 7,987,123, which covers analogous diagnostic techniques, and several other filings focusing on molecular therapeutic combinations.

2. Freedom to Operate and Overlap
A thorough freedom-to-operate analysis reveals potential overlaps with existing patents. For example, if the '669 patent claims a composition comprising a known biomarker with a particular therapeutic agent, competitors might proceed to develop alternative biomarkers or delivery methods to circumvent the patent.

3. Opportunities for Licensing or Litigation
Given its scope, the '669 patent provides avenues for licensing, especially if it covers a promising therapeutic or diagnostic tool. Conversely, it may also be a target for challenges, particularly if prior art or obviousness arguments weaken its claims.

4. Patent Families and International Protection
The assignee likely secured foreign counterparts, forming a patent family covering jurisdictions such as Europe or Japan. The strength of these equivalents varies with local patentability standards, especially regarding obviousness and inventive step, influencing global commercialization strategies.


Implications for Industry Stakeholders

  • Pharmaceutical Developers: Must carefully analyze the '669 patent’s claims to design around its protections while exploring complementary innovations.
  • Research Institutions: May need to consider licensing or work in areas outside the patent’s scope to advance foundational science.
  • Legal Practitioners: Should monitor potential infringing activities or validity challenges, especially given the complex interplay of multiple biomedical patents.
  • Investors: Should evaluate the patent’s enforceability and market coverage to inform licensing, development, or litigation strategies.

Conclusion

The '669 patent exemplifies a strategic approach to securing protection in a competitive biotech arena. Its claims, carefully tailored to emphasize novelty and inventive step, constrain competitors but are potentially vulnerable to prior art challenges. Its position within the patent landscape underscores the importance of continuous innovation, diligent patent prosecution, and strategic enforcement to maximize commercial value.


Key Takeaways

  • The '669 patent's broad independent claims aim to secure a leading position in targeted therapies or diagnostics but must withstand scrutiny against prior art.
  • Its patent landscape is crowded, necessitating proactive monitoring, licensing, and defense strategies.
  • Companies should analyze the scope and validity of the claims thoroughly to avoid infringement risks or to leverage licensing opportunities.
  • The patent’s strength is partly dependent on its international counterparts and ongoing patent prosecution efforts.
  • Continuous innovation and strategic patent management are critical to maintain competitiveness in rapidly evolving biomedical fields.

FAQs

1. What is the core innovation claimed by the '669 patent?
While specific details depend on the patent's exact claims, it generally relates to a novel therapeutic composition or diagnostic method involving particular molecular markers or treatment protocols that distinguish it from prior art.

2. How does the '669 patent compare to similar patents in the field?
It appears to employ strategic broad claims focusing on specific molecules or methods, a common approach in biotech patents, aiming for wide protection while balancing the risk of prior art invalidation.

3. Can competitors develop alternatives that circumvent the '669 patent?
Yes, by modifying molecular structures, using different biomarkers, or altering methods, competitors can design around the patent, particularly if claims are narrowly interpreted or challenged.

4. What are potential legal challenges to the validity of the '669 patent?
Challenges could focus on prior art references, obviousness, or insufficient disclosure. The strength of such challenges depends on the originality and documentation of the claimed invention.

5. How should patent owners leverage the '669 patent in industry?
Owners can commercialize, license, or enforce the patent, while continuously monitoring the landscape to defend against infringement and explore new claims to extend their protection.


References
[1] US Patent 8,795,669, "Title and Abstract" (specific details from the patent document).
[2] Prior art references, patent databases, and legal case law related to biomedical patents, accessed via USPTO and EPO databases.

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Details for Patent 8,795,669

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Regeneron Pharmaceuticals, Inc. PRALUENT alirocumab Injection 125559 July 24, 2015 ⤷  Get Started Free 2032-07-27
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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