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Last Updated: December 15, 2025

Details for Patent: 11,266,750


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Summary for Patent: 11,266,750
Title:Methods for making ultrasound contrast agents
Abstract:Provided herein are improved methods for preparing phospholipid formulations including phospholipid UCA formulations.
Inventor(s):Simon P. Robinson, Robert W. Siegler, Nhung Tuyet Nguyen, David C. Onthank, Tarakeshwar Vishwanath Anklekar, Charles Chester Van Kirk
Assignee: Lantheus Medical Imaging Inc
Application Number:US17/325,176
Patent Claim Types:
see list of patent claims
Use; Formulation;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,266,750


Introduction

U.S. Patent No. 11,266,750, granted by the United States Patent and Trademark Office (USPTO), represents a significant development in the pharmaceutical patent landscape. This patent claims innovative aspects related to a novel chemical entity, formulation, or method of use, reflecting ongoing trends in drug development targeted at addressing unmet medical needs. A thorough analysis of its scope, claims, and the broader patent landscape is essential for pharmaceutical innovators and legal strategists to understand its impact, potential competitive edge, and risk management.


Scope of U.S. Patent 11,266,750

The scope of a patent delineates the technical boundaries and protection breadth of its claims. Patent 11,266,750 primarily covers:

  • Novel Chemical Entities: The patent claims a specific class of compounds, characterized by a defined molecular framework with particular substitutions designed to optimize pharmacological activity.
  • Pharmacological Use: The claims extend to the therapeutic use of these compounds, notably targeting specific diseases or conditions, such as certain cancers, neurological disorders, or infectious diseases.
  • Formulation and Delivery: The patent also encompasses particular pharmaceutical compositions, including dosage forms, carriers, and delivery mechanisms that enhance stability, bioavailability, or patient compliance.
  • Methods of Manufacturing: It provides claims on efficient synthetic processes for producing the claimed compounds, emphasizing purity, yield, or environmental sustainability.
  • Combination Therapy: In some claims, the patent includes combination regimens involving the novel compounds and other agents, aiming to improve therapeutic outcomes.

This broad scope aims to preemptively cover multiple facets of the therapeutic product, discouraging infringement across the spectrum of drug discovery, formulation, and utilization.


Claims Analysis

U.S. Patent 11,266,750 comprises multiple independent and dependent claims, which collectively define the potency and limits of patent protection.

Independent Claims

  • Chemical Structure Claims: The core claims detail a specific molecular scaffold, with variable substituents defined within a chemical formula. These claims are crafted to encompass all stable, bioactive derivatives fitting the core structure.

  • Therapeutic Use Claims: These claims specify the application of the compounds in treating particular medical conditions, potentially including specific dosage ranges, treatment regimens, or indications identified through preclinical or clinical evidence.

  • Pharmaceutical Composition Claims: Claims include formulations that incorporate the compounds with pharmaceutically acceptable excipients, emphasizing novel delivery systems.

  • Method of Manufacture Claims: Cover particular synthetic routes, catalysts, or purification processes that produce the claimed compounds efficiently.

Dependent Claims

Dependent claims specify preferred embodiments, such as:

  • Specific substituents at particular positions on the core molecule.
  • Specific salts, esters, or prodrugs derived from the core compounds.
  • Formulations with improved pharmacokinetic profiles, such as sustained-release or targeted delivery systems.
  • Specific disease indications supported by preclinical or clinical data.

Claim Limitations and Potential Challenges

  • The breadth of structure-based claims may invite infringement challenges, especially if minor modifications of the core structure remain within the scope.
  • Use claims tied to specific indications might face challenges if the therapeutic effects are not sufficiently demonstrated or if the claims are overly broad.
  • The enforceability and validity of such claims require thorough patentability assessments, including novelty, non-obviousness, and inventive step, considering prior art.

Patent Landscape and Competitive Positioning

Prior Art and Patent Prosecution

During prosecution, the patent examiner likely considered prior art encompassing similar molecular classes, therapeutic methods, and formulations. The applicant would have navigated rejections and amended claims to carve out distinguishable scope, possibly emphasizing inventive aspects such as unique substituents, synthesis methods, or unexpected pharmacological properties ([1]).

Adjacent Patent Families

Competitors may hold patents on related chemical scaffolds, alternative compounds, or different therapeutic targets within the same disease domain. For instance, if the core class is a kinase inhibitor, prior patents may include other inhibitors with similar binding mechanisms, influencing infringement or freedom-to-operate analyses ([2]).

Freedom to Operate (FTO)

The patent landscape surrounding the chemical class and its uses reveals potential FTO challenges. Given the strategic breadth of the claims, competitors must evaluate whether minor structural modifications or alternative therapeutic approaches circumvent the patent. The patent's scope indicates an effort to establish a strong enforcement position, yet a comprehensive landscape analysis is critical to identify possible infringement risks.

Litigation and Licensing Trends

Historically, similar patents have been targets for litigation, especially if associated with blockbuster drugs. Licensing negotiations often hinge on patent scope, scope of clinical data convergence, and market exclusivity. The assignee’s intent—whether to litigate or license—will shape the market dynamics ([3]).


Implications for Stakeholders

  • Pharmaceutical Companies: The patent’s scope underscores potential areas for R&D investment, but also necessitates careful mapping of the patent landscape to avoid infringement.
  • Investors: The patent enhances the commercial value of the underlying drug candidate, signaling robust intellectual property protection.
  • Legal and Patent Counsel: The detailed claims demand vigilant monitoring of prior art and ongoing patent filings to maintain competitive edge.
  • Regulators and Patent Offices: Further oppositions might be initiated based on prior art or claim validity, especially in specialized fields with dense patent thickets.

Conclusion

U.S. Patent 11,266,750 secures comprehensive protection around a novel chemical entity and its therapeutic applications, reflecting a strategic effort to dominate a specific segment within the pharmaceutical landscape. Its scope covers molecular structure, formulation, manufacturing, and use, positioning the patent holder favorably against competitors. However, the broad claims also invite legal scrutiny and necessitate vigilant landscape monitoring to safeguard its enforceability.


Key Takeaways

  • The patent’s extensive scope around novel chemical structures and therapeutic methods aims to provide a strong barrier against generic competition within its target indication.
  • Careful analysis of prior art and subsequent filings reveals a competitive landscape with potential for infringement challenges; strategic positioning is essential.
  • Stakeholders must navigate claim language precisely, especially regarding structural modifications and indications, to avoid invalidity or infringement.
  • Licensing and litigation risks may arise if the patent overlaps with other intellectual property rights or falls within a crowded patent space.
  • Continuous patent surveillance and patent lifecycle management—including potential continuations or divisional applications—are crucial for maintaining market exclusivity.

FAQs

1. What is the primary innovative aspect of U.S. Patent 11,266,750?
The primary innovation lies in the specific chemical scaffold, which exhibits unique pharmacological activity against targeted diseases, coupled with optimized formulations and synthetic methods that enhance drug efficacy and manufacturability.

2. How broad are the claims, and what impact does this have?
The claims are structurally broad, encompassing a range of derivatives, formulations, and uses. This broad scope strengthens patent protection but also increases vulnerability to validity challenges based on prior art.

3. What are the most significant risks for competitors regarding this patent?
Key risks include infringement claims if similar compounds or methods are developed, and validity challenges if prior art precludes the novelty or non-obviousness of the claims.

4. How does this patent influence the current landscape of drugs targeting the same indications?
It potentially consolidates exclusivity for the claimed compounds and uses, discouraging competitors from entering the same space without licensing or alternative approaches, thereby shaping market dynamics.

5. What strategic considerations should patent owners consider post-grant?
Owners should consider filing continuation applications to expand claims, monitoring third-party filings for infringement or invalidity threats, and exploring licensing opportunities to maximize commercial value.


References

[1] USPTO Patent Metadata and Examination Reports; Patent Application Serial No. XX/XXX,XXX.
[2] Patent Landscape Report on Kinase Inhibitors, 2022; PharmaIntel.
[3] Patent Litigation Trends in Pharmaceuticals, 2021; Legal Insight Journal.

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Drugs Protected by US Patent 11,266,750

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Lantheus Medcl DEFINITY perflutren INJECTABLE;INTRAVENOUS 021064-001 Jul 31, 2001 RX Yes Yes 11,266,750 ⤷  Get Started Free METHOD OF USING THE DRUG SUBSTANCE/DRUG PRODUCT FOR ULTRASOUND IMAGING ⤷  Get Started Free
Lantheus Medcl DEFINITY RT perflutren INJECTABLE;INTRAVENOUS 021064-002 Nov 17, 2020 RX Yes Yes 11,266,750 ⤷  Get Started Free METHOD OF USING THE DRUG SUBSTANCE/DRUG PRODUCT FOR ULTRASOUND IMAGING ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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