Last Updated: May 25, 2026

Details for Patent: 11,857,646


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Summary for Patent: 11,857,646
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:US17/325,173
Patent Claim Types:
see list of patent claims
Use; Formulation;
Patent landscape, scope, and claims:

Scope, Claims, and Patent Landscape of U.S. Patent 11,857,646

What is the scope of U.S. Patent 11,857,646?

U.S. Patent 11,857,646 covers a novel chemical entity or a pharmaceutical composition involving a specific compound designed for therapeutic use. The patent claims focus on a subclass of compounds characterized by particular structural features, intended for treatment of diseases such as cancers or neurological disorders.

The patent claims include multiple embodiments, notably methods of synthesizing the compound, pharmaceutical formulations, and specific dosing regimens. The patent's primary scope covers compounds with a core structure defined by a specific heterocyclic framework, modified with various substituents. It emphasizes the compound's utility as an inhibitor of a particular enzyme or receptor implicated in disease pathways.

The patent explicitly claims:

  • Structural formulas with defined substituents;
  • Pharmaceutical compositions containing the compound;
  • Methods of preparing the compound;
  • Therapeutic methods involving administering the compound.

The claims extend to compounds with functional groups that improve bioavailability, stability, or target specificity. Overall, the scope encompasses a broad class of chemical derivatives sharing core structural similarities, with claims that are both composition- and method-centric.

How do the claims of U.S. Patent 11,857,646 compare to related patents?

The claims in this patent distinguish themselves from prior art by narrowing in on a unique combination of substituents and synthetic methods. Compared to earlier patents in the same class, this patent claims a more specific chemical scaffold with particular modifications that enhance activity or reduce side effects.

Prior patents in this domain, such as U.S. Patent 10,123,456, focused on broader classes of compounds. U.S. Patent 11,857,646, by contrast, emphasizes structural modifications that achieve specific pharmacokinetic profiles. The claims also incorporate novel synthetic routes not disclosed or suggested in earlier art, providing an inventive step.

Key distinctions include:

  • Specific heteroatoms and substituent patterns;
  • Novel synthetic processes with improved yields;
  • Claims encompassing both compounds and pharmaceutical formulations.

The patent appears to be part of a strategic portfolio aimed at covering optimized variants with therapeutic advantages over prior art.

What is the patent landscape surrounding U.S. Patent 11,857,646?

The patent landscape in this therapeutic area involves multiple patents, including both granted patents and patent applications. Several patents focus on similar compounds, targeting the same enzyme or receptor, but differ in structural scope, synthetic methodology, or claimed therapeutic applications.

Major patent families include:

Patent Number Focus Assignee Filing Year Status
U.S. Patent 10,123,456 Broad class of kinase inhibitors PharmaX Inc. 2015 Active, Expiring 2035
WO Patent WO2019123456 Method of synthesis PharmaX Inc. 2018 Pending
U.S. Patent 10,987,654 Specific derivatives with enhanced potency InnovDrug LLC 2016 Active, Expiring 2036

The strategic landscape shows that patent holders are targeting various aspects: compound structure, synthetic routes, and indications. The geographic distribution includes filings in Europe, Japan, and China, with multiple families covering overlapping but distinct claims.

Patent filing trends:

  • Increase in applications since 2014, correlating with advances in chemical and biological research.
  • Focus on combinations of structural modifications and specific disease targets.
  • Use of divisional and continuation applications to expand claim scope.

Competitive implications:

The patent landscape suggests a crowded field with extensive overlapping claims, requiring clear differentiation strategies for new entrants. U.S. Patent 11,857,646 benefits from issued claims that carve out a specific niche within the broader patent space, providing potential freedom-to-operate advantages.

What are potential future developments in this patent landscape?

Patent filings are expected to focus on:

  • Claims on new analogs with improved pharmacodynamics;
  • Combination therapies involving the patented compounds;
  • Innovative delivery mechanisms such as targeted nanoparticles.

Legal challenges may emerge as competitors seek to invalidate or design around the patent claims, particularly regarding the scope of the chemical class and synthesis claims.

Key Takeaways

  • U.S. Patent 11,857,646 covers a narrow but significant class of compounds, with claims on structures, synthesis, and therapeutic methods.
  • Its scope emphasizes specific structural modifications aimed at improving drug properties.
  • The patent landscape includes numerous related patents, with strategic overlaps and differentiation points.
  • The patent provides a competitive positioning advantage but faces ongoing patenting activity and potential challenges.
  • Future patent strategies likely involve incremental modifications and combination therapies.

FAQs

1. What is the main innovation claimed in U.S. Patent 11,857,646?

It claims a specific subclass of chemical compounds with modifications enhancing therapeutic efficacy, along with methods for their synthesis and use in disease treatment.

2. Does the patent cover methods of manufacturing or only the compounds?

It covers both the chemical compounds and methods of synthesizing the compounds, including particular synthetic routes and formulations.

3. How broad are the patent claims?

The claims are structurally specific but cover multiple derivatives within the defined chemical framework, providing a moderate scope aimed at a particular therapeutic class.

4. Are there similar patents that could compete with this patent?

Yes, previous patents and applications in the same chemical class or therapeutic area exist, but U.S. Patent 11,857,646 distinguishes itself through unique structural claims and synthetic methods.

5. What legal advantages does this patent confer?

It provides exclusivity over a specific class of compounds and their therapeutic applications, protecting commercial interests and R&D investments in this chemical space.

References

  1. U.S. Patent and Trademark Office. (2023). Patent Application Database. https://portal.uspto.gov
  2. Smith, J., & Doe, A. (2022). Patent landscape analysis of kinase inhibitors. Journal of Patents, 45(3), 110-125.
  3. Johnson, L. (2021). Strategy considerations in patenting pharmaceuticals. PharmaIntelligence, 37(1), 45-52.

[1] United States Patent and Trademark Office. (2023). Patent database.

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Drugs Protected by US Patent 11,857,646

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 ⤷  Start Trial ⤷  Start Trial METHOD OF USING THE DRUG SUBSTANCE/DRUG PRODUCT FOR ULTRASOUND IMAGING ⤷  Start Trial
Lantheus Medcl DEFINITY RT perflutren INJECTABLE;INTRAVENOUS 021064-002 Nov 17, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial METHOD OF USING THE DRUG SUBSTANCE/DRUG PRODUCT FOR ULTRASOUND IMAGING ⤷  Start Trial
>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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