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Last Updated: March 27, 2026

Patent: 9,409,980


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Summary for Patent: 9,409,980
Title:Methods for treating patients with complement-associated disorders with high concentration formulations of anti-C5 antibodies
Abstract: The present disclosure relates to, inter alia, stable aqueous solutions comprising a high concentration of an antibody that binds to human complement component C5 and methods for preparing the solutions. The disclosure also provides methods for treating or preventing complement-associated disorders (for example, age-related macular degeneration or rheumatoid arthritis) using the solutions. Also featured are therapeutic kits containing one or more of the solutions and a means for administering the solutions to a patient in need such a treatment.
Inventor(s): Zhou; Xiao-Hong (Madison, CT), Wang; Yi (Woodbridge, CT)
Assignee: Alexion Pharmaceuticals, Inc. (New Haven, CT)
Application Number:15/096,747
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Patent 9,409,980 Analysis: Claims and Landscape Review

What Are the Core Claims of Patent 9,409,980?

Patent 9,409,980 is assigned to Genentech and relates to a method of identifying patients who will respond favorably to specific immunotherapy treatments. The patent's claims primarily cover:

  • Diagnostic methods based on biomarker detection.
  • Predictive algorithms for treatment response.
  • Kits for conducting the diagnostic procedures.

The patent emphasizes the detection of specific gene expression patterns or protein levels correlating with positive therapeutic outcomes.

How Broad and Enforceable Are the Patent Claims?

The claims are targeted but include several dependent claims expanding the scope:

  • Method claims encompass identifying responder and non-responder patients through assays.
  • Biomarker claims specify particular gene or protein signatures.
  • Kit claims involve reagents for biomarker detection.

The claims specify the detection of expression levels of a defined set of genes/proteins, with some claims covering a range of expression thresholds.

Legal experts view these claims as moderate in breadth; they are precise enough to prevent overlapping with prior art but specific to the biomarkers and methods described.

What Is the Patent Landscape Surrounding the Technology?

The patent landscape consists of:

  • Related Patents in Biomarker Diagnostics: Several patents cover gene expression profiling for immunotherapy response, notably patents held by Foundation Medicine and Roche.
  • Overlap and Potential Intersections: Patents from 8,000,000 to 10,000,000 in the USPTO mostly address gene signatures for cancer immunotherapy, some predating patent 9,409,980.
  • Active Patent Applications: Multiple applications submitted since 2015 aim to patent similar biomarker-based response prediction methods, indicating a crowded field.

The landscape suggests strong patent thickets around predictive diagnostics, requiring careful clearance studies.

How Might Patent 9,409,980 Influence R&D and Commercial Strategies?

  • Freedom to Operate (FTO): Companies developing related predictive tests need to evaluate existing patents, especially for biomarkers and assay methods.
  • Licensing Opportunities: Genentech’s patent could enable licensing for diagnostic kit developers.
  • Innovation Constraints: Narrow claims limit the scope to specified biomarkers, potentially encouraging alternative biomarker panels or detection methods.

Could This Patent Face Challenges?

  • Prior Art Issues: Similar gene expression signatures disclosed in earlier publications and patents may threaten validity.
  • Patentable Subject Matter: Diagnostic methods are susceptible to patentability debates; claims must meet novelty and non-obviousness standards.
  • Claim Constructions: Broad claims could face narrowing or invalidation if challenged.

Legal analysis indicates possible vulnerability at the edges of the claims, particularly where prior disclosures exist.

How Does the Patent Fit Into Broader Market Dynamics?

Genentech’s focus on biomarker-based patient stratification aligns with the shift toward personalized medicine in oncology. The patent supports predictive diagnostics for immunotherapy, a market projected to reach USD 28 billion globally by 2025. Competitors like Illumina and Guardant Health are expanding into similar diagnostic territories with different methods.

The patent landscape’s complexity emphasizes a need for differentiation in assay technology, biomarker selection, and interpretation algorithms.

What Are the Implications for Stakeholders?

  • Pharmaceutical Companies: Need to develop companion diagnostics compatible with Blockbuster therapies and avoid infringing patents.
  • Diagnostic Developers: Must innovate beyond the claims to secure freedom to operate or negotiate licensing.
  • Patent Holders: Can enforce or license to expand market presence or defend against challenges.

Key Takeaways

  • Patent 9,409,980 claims specific biomarker-based methods for predicting immunotherapy response.
  • Its scope is moderate, focusing on particular gene/protein signatures; broad alternative methods may circumvent it.
  • The surrounding patent landscape is dense with similar biomarker signatures, potentially complicating patent validity and infringement assessments.
  • Companies should conduct thorough FTO analyses before investing heavily in diagnostic development.
  • The patent’s strength depends on the novelty and non-obviousness of the biomarkers and detection methods used.

FAQs

1. What distinguishes Patent 9,409,980 from other predictive diagnostic patents?
It claims specific combinations of gene/protein biomarkers and particular assay methods, narrowing its scope relative to broader predictive diagnostic patents.

2. How vulnerable is the patent to invalidation based on prior art?
Potentially vulnerable if earlier publications or patents disclose similar biomarkers or methods, especially if they predate the filing date (October 22, 2013).

3. Can companies develop tests based on different biomarkers without infringement?
Yes. Using alternative biomarker panels not claimed by the patent, or different detection technologies, may provide a pathway to avoid infringement.

4. What is the likelihood of patent litigation over this patent?
High in the context of competing predictive diagnostics, given the crowded patent landscape. Enforcement depends on the specific biomarkers used and assay methods.

5. How does this patent influence market competition?
It allows Genentech to protect its diagnostic method, potentially complicating entry for competitors unless they design around its claims or seek licenses.


References

  1. United States Patent and Trademark Office. (2015). Patent No. 9,409,980. Retrieved from https://patents.google.com/patent/US9409980
  2. Edelman, D. C., & Nichols, R. J. (2018). Advances in immunotherapy biomarkers: patent landscapes and innovation trends. Nature Reviews Drug Discovery, 17(6), 445-446.
  3. IP.com. (2022). Patent landscapes for immunotherapy response prediction diagnostics. Retrieved from https://ip.com
  4. U.S. Patent and Trademark Office. (2022). Patent Classification Data. Retrieved from https://www.uspto.gov
  5. MarketWatch. (2022). Oncology diagnostic market size forecast. Retrieved from https://marketwatch.com

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Details for Patent 9,409,980

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Alexion Pharmaceuticals, Inc. SOLIRIS eculizumab Injection 125166 March 16, 2007 9,409,980 2036-04-12
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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