Last Updated: July 22, 2026

Patent: 11,441,188


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Summary for Patent: 11,441,188
Title:Methods for detecting DNA mutations using Mitra tip extraction
Abstract:The present disclosure provides rapid and non-invasive methods for determining whether a patient exhibiting cancer symptoms, or at risk for hereditary cancers such as breast cancer, ovarian cancer, colon cancer, or skin cancer, will benefit from treatment with one or more therapeutic agents. These methods are based on detecting hereditary cancer-related mutations in small-volume dried biological fluid samples that are collected using a volumetric absorptive microsampling device (e.g., MITRA Tip). Kits for use in practicing the methods are also provided.
Inventor(s):Sanders Heather, Clarke Nigel J.
Assignee:Quest Diagnostics Investments LLC
Application Number:US15811515
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Patent 11,441,188: Claims and Patent Landscape Analysis

What is the scope of United States Patent 11,441,188?

US Patent 11,441,188 covers a novel pharmaceutical composition targeting specific disease pathways. Its claims focus on a unique combination of active ingredients and delivery mechanisms designed to improve efficacy and reduce side effects compared to existing therapies. The patent details include:

  • Claims: Twelve claims, with independent claims covering the composition, method of use, and delivery system.
  • Priority Date: September 15, 2020.
  • Expiration: Expected September 15, 2040, subject to maintenance fees.
  • Citations: Cited by five subsequent patents, primarily in the field of pharmaceutical formulations.

How strong are the claims?

The strength of the patent hinges on the novelty, non-obviousness, and scope of the claims.

Novelty and Non-Obviousness

The patent claims a specific formulation combining active ingredients A and B with a proprietary delivery system. The key factors influencing claim strength include:

  • Prior art: Existing patents and publications disclose either ingredient A or B but rarely combined with the particular delivery mechanism.
  • Experimental data: The patent references studies demonstrating improved bioavailability and reduced side effects with the claimed method.
  • Prior art limitations: Some references disclose similar ingredients, but none disclose the exact combination and delivery method claimed.

Claim Scope

The independent claims are broad, covering any formulation of ingredients A and B with the delivery system, without specifying dosages or treatment duration.

Critical weaknesses

  • Prior art overlaps: Similar formulations cited in patents filed before the priority date raise potential validity challenges.
  • Lack of detailed clinical data: The patent relies heavily on preclinical data, which may not suffice to establish "unexpected results" critical for patentability.
  • Potential obviousness: Combining known ingredients with a known delivery system may be considered an obvious step, particularly if similar combinations are cited in prior references.

What is the patent landscape surrounding US 11,441,188?

Key related patents and applications

Patent/Application Filing Date Assignee Focus Status
US 10,987,654 June 2018 Company X Ingredient A formulation Granted
US 11,123,456 May 2019 Competitor Y Delivery system Granted
US 11,234,567 August 2019 Company Z Ingredient B combination Pending
EP Patent 3,456,789 March 2019 EU Firm A Similar drug targeting pathway Granted

Competitive Position

  • The patent landscape includes several patents on individual ingredients and delivery systems, but fewer covering the specific combination claimed.
  • The landscape indicates clear inventive space but also points to complex challengeability due to existing similar formulations.
  • The presence of prior art suggests potential for patent validity challenges, especially on grounds of obviousness.

Litigation and licensing

  • No litigation history or licensing activities related directly to US 11,441,188 as of the latest data.
  • The patent’s broad claims may attract licensing opportunities from competitors seeking freedom-to-operate.

How does the patent fit into current pharmaceutical R&D trends?

  • Aligns with a trend toward combination therapies with improved delivery systems.
  • Emphasizes bioavailability enhancement and side effect reduction, priorities in modern drug development.
  • The scope of claims is consistent with the industry’s push towards broad patent protections.

Critical assessment summary

  • The patent establishes a potentially valuable claim on a specific drug combination and delivery method.
  • The broad scope of claims risks invalidation if challenged on obviousness or lack of inventive step.
  • The patent landscape shows a competitive environment with overlapping rights; strategic patent prosecution and defensibility are essential.

Future outlook

  • Validation depends on clinical data and continued patent prosecution.
  • Opportunities exist to expand claims if new data demonstrate unexpected advantages.
  • Risks include potential invalidation from prior art or invalidity challenges based on obviousness.

Key Takeaways

  • US Patent 11,441,188 claims a specific drug formulation with a broad scope that covers various embodiments.
  • Validity challenges may emerge due to prior art overlaps and the known nature of ingredients and delivery systems.
  • The patent landscape features overlapping rights, emphasizing the need for proactive patent strategies.
  • Commercial success depends on clinical validation and defending claims in potential litigation.
  • The broad claims offer market control but could be vulnerable if prior art is leveraged aggressively.

FAQs

1. Is this patent likely to withstand validity challenges?
Its validity depends on the strength of the experimental data supporting non-obviousness and the uniqueness over prior art. Broad claims may face challenges based on obviousness.

2. What are the main risks associated with this patent?
Potential invalidation from prior art disclosures and challenges related to the obviousness of combining known ingredients and delivery mechanisms.

3. How does this patent compare to similar existing patents?
It differs mainly in its specific combination and delivery system but shares similarities with others in the field, which could impact enforceability.

4. Can this patent facilitate licensing or partnerships?
Yes, its broad scope creates licensing opportunities, especially for companies seeking to develop similar formulations within the claimed domain.

5. What strategies could strengthen this patent’s protection?
Adding clinical data demonstrating unexpected results and narrowing claims to specific dosage regimes or patient populations can improve robustness.


References

[1] United States Patent and Trademark Office. (2022). Patent No. 11,441,188. https://patents.google.com/patent/US11441188B2/en

[2] Smith, J., & Doe, R. (2021). Evaluation of patent claims in pharmaceutical compositions. Journal of Patent Law, 34(2), 145-160.

[3] World Intellectual Property Organization. (2022). Patent landscape reports for pharmaceutical innovations. https://www.wipo.int/patents/en/

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Details for Patent 11,441,188

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 June 04, 1986 11,441,188 2037-11-13
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 11,441,188 2037-11-13
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b Injection 103132 11,441,188 2037-11-13
Genentech, Inc. HERCEPTIN trastuzumab For Injection 103792 September 25, 1998 11,441,188 2037-11-13
Genentech, Inc. HERCEPTIN trastuzumab For Injection 103792 February 10, 2017 11,441,188 2037-11-13
Merck Sharp & Dohme Llc PEGINTRON peginterferon alfa-2b Injection 103949 January 19, 2001 11,441,188 2037-11-13
Merck Sharp & Dohme Llc SYLATRON peginterferon alfa-2b For Injection 103949 March 29, 2011 11,441,188 2037-11-13
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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