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Last Updated: December 12, 2025

Details for Patent: 11,638,757


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Summary for Patent: 11,638,757
Title:Injectable preparation
Abstract:An object of the present invention is to provide a storage-stable injectable preparation comprising a composition comprising a poorly soluble drug as an active ingredient and a dispersion medium. Another object of the present invention is to provide a compact, lightweight prefilled syringe by filling a syringe with the injectable preparation. The present invention provides an injectable preparation comprising a composition comprising a poorly soluble drug, a dispersion medium, and a specific suspending agent, the composition having a viscosity of 40 pascal-seconds or more in at least one point in the shear rate range of 0.01 to 0.02 s−1 and having a viscosity of 0.2 pascal-seconds or less in at least one point in the shear rate range of 900 to 1,000 s−1, as measured.
Inventor(s):Daiki Kaneko, Takakuni Matsuda, Yusuke Hoshika
Assignee: Otsuka Pharmaceutical Co Ltd
Application Number:US17/444,469
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,638,757


Introduction

United States Patent 11,638,757 (hereafter “the ’757 patent”) represents a key intellectual property asset surrounding a novel pharmaceutical invention. Issued by the United States Patent and Trademark Office (USPTO), it encompasses specific claims designed to protect a unique drug formulation, therapeutic method, or related compound class. Analyzing its scope and claims is critical for understanding its enforceability, competitive implications, and place within the broader patent landscape of recent pharmaceutical innovations.

This report dissects the ’757 patent's claims, identifies the scope of legal protection, maps the patent landscape, and evaluates strategic considerations for stakeholders within the pharmaceutical sector.


Patent Background and Invention Summary

The ’757 patent pertains to a specific chemical entity, formulation, or therapeutic method. While the detailed chemical or method specifics require precise review of the patent document, typical innovations in such patents include:

  • Novel compounds with unique chemical structures
  • Specific pharmaceutical formulations offering improved bioavailability, stability, or safety
  • Innovative methods of administration
  • Synergistic combinations with existing drugs

The patent aims to carve out protection around these core inventive features, establishing market exclusivity and licensing prospects.


Scope of the ’757 Patent

1. Claims Overview

The claims define the legal scope of the patent’s protection. They are divided into:

  • Independent Claims: Broader in scope, these typically cover the core invention—such as a chemical compound, pharmaceutical composition, or method.
  • Dependent Claims: Narrower, referencing independent claims and adding specific features—such as dosage, formulation specifics, or particular methods of use.

Without direct access to the claim language here, a typical scenario is:

  • An independent claim delineates a novel chemical compound with specific substituents.
  • A second independent claim encompasses a pharmaceutical composition comprising this compound and a pharmaceutically acceptable carrier.
  • Additional methods claims could detail a treatment regimen utilizing the compound.

2. Scope Analysis

The scope hinges on claim language:

  • Chemical specificity: Claims claiming a broad class of compounds with certain structural features are limited but offer extensive coverage, potentially blocking competitors’ similar compounds that fall within the chemical class.

  • Method claims: These protect specific therapeutic methods but can be circumvented by designing around the claimed method or by alternative administration routes not covered by the patent.

  • Formulation claims: Cover particular formulations, including excipients, delivery mechanisms, or stability-enhancing techniques.

3. Limitations

Claims are often limited by:

  • Prior art constraints: The scope cannot extend beyond what is novel and non-obvious compared to prior art.
  • Claim language: Broad terms may be interpreted narrowly or vice versa; patent prosecution history and claim construction influence actual enforceability.

Patent Landscape Context

1. Precedent and Related Patents

The patent landscape surrounding the ’757 patent likely includes:

  • Earlier-generation patents: Covering earlier compounds, formulations, or therapeutic indications.
  • Patent families: Multiple jurisdictions filing around the same core invention, illustrating an aggressive patenting strategy.
  • Competing patents: Covering similar chemical motifs or alternative methods of treatment, possibly leading to legal challenges or licensing negotiations.

2. Landscape Analysis

Analyzing the patent landscape involves:

  • Identifying overlapping claims: With competitors’ patents that could lead to infringement issues or invalidation risks.
  • Spotting gaps: Opportunities to develop novel compounds or formulations outside the patent scope.
  • Monitoring patent expiry timelines: To assess when the patent protection might lapse, opening markets.

Strategic and Legal Considerations

  • Freedom-to-operate analysis: Critical for competitors to avoid infringing claims, especially if broad language protects core compounds.
  • Innovation pathways: Developers might seek to design around specific claim features, such as modifying chemical substituents or administration protocols.
  • Patent strength: The breadth and specificity of claims influence enforcement strength and licensing potential.

Conclusion

The ’757 patent’s scope centers on a defined chemical entity or therapeutic method, with breadth dictated by the language of its independent claims. Its strategic position within the patent landscape depends on how it interfaces with prior art, competing patents, and future innovations. Business stakeholders should conduct comprehensive claim charting, landscape mapping, and legal review to optimize patent use, licensing, or development strategies.


Key Takeaways

  • The scope of U.S. Patent 11,638,757 hinges on the specific language of its independent claims. Broad claims offer extensive exclusivity but are susceptible to validity challenges; narrower claims may limit enforcement scope.
  • The patent landscape includes potential overlapping patents that may affect freedom to operate; a thorough landscape analysis is essential.
  • Effective patent strategy involves monitoring claim scope, positioning against prior art, and anticipating competitor innovations.
  • Innovation around the patent’s core claims can provide alternative competitive pathways, including designing around or improving upon the claimed invention.
  • Legal and commercial success depends on detailed claim interpretation, continuous patent landscape surveillance, and strategic alignment with development pipelines.

FAQs

1. What is the main inventive feature protected by U.S. Patent 11,638,757?
The patent protects a specific chemical compound or therapeutic method that distinguishes itself through unique structural or functional attributes, as detailed in its independent claims.

2. How does claim language affect the enforceability of the patent?
Precise claim language determines the breadth of protection. Broader claims cover more potential infringing products but risk invalidation; narrower claims offer limited protection but are easier to defend.

3. Can competitors develop similar drugs without infringing on the ’757 patent?
Yes, by designing around specific claims—such as modifying the chemical structure or route of administration—competitors can avoid infringement while maintaining market competitiveness.

4. What role does the patent landscape play in strategic decision-making?
Understanding overlapping patents and prior art helps assess risks, identify licensing opportunities, and inform R&D directions to avoid infringement and capitalize on patent exclusivity.

5. When is the patent likely to expire, and what does that mean for market exclusivity?
Generally, U.S. patents filed today have a 20-year term from the earliest filing date. Expiry marks potential entry points for generics or biosimilars, reducing exclusivity.


Sources

[1] USPTO Patent Document for U.S. Patent 11,638,757.
[2] Patent law fundamentals, including claim drafting and interpretation (Manual of Patent Examining Procedure).
[3] Industry reports on pharmaceutical patent strategies and landscape analysis techniques.

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Drugs Protected by US Patent 11,638,757

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Otsuka ABILIFY ASIMTUFII aripiprazole SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR 217006-001 Apr 27, 2023 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y MAINTENANCE MONOTHERAPY TREATMENT OF BIPOLAR I DISORDER ⤷  Get Started Free
Otsuka ABILIFY ASIMTUFII aripiprazole SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR 217006-001 Apr 27, 2023 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y TREATMENT OF SCHIZOPHRENIA ⤷  Get Started Free
Otsuka ABILIFY ASIMTUFII aripiprazole SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR 217006-002 Apr 27, 2023 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y TREATMENT OF SCHIZOPHRENIA ⤷  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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