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Last Updated: December 12, 2025

Details for Patent: 11,957,681


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Which drugs does patent 11,957,681 protect, and when does it expire?

Patent 11,957,681 protects IMKELDI and is included in one NDA.

This patent has six patent family members in six countries.

Summary for Patent: 11,957,681
Title:Liquid dosage forms of Imatinib
Abstract:Imatinib is approved and marketed in solid oral dosage forms which may be dispersed in water or apple juice for patients having swallowing difficulty. Dispersion of Imatinib solid dosage forms in apple juice may increase palatability and patient compliance but apple juice may not be available all the time for administration. Further, dispersion of Imatinib solid oral dosage forms may not administer correct and consistent dose of medicine every time. The present invention therefore provides liquid dosage forms of Imatinib which correctly and consistently administers correct dose of drug to the patients.
Inventor(s):Sandip Mehta, Vijay Patel, Manish Umrethia, Jayanta Kumar Mandal
Assignee: Liqmeds Lifecare Ltd , Shorla Pharma Ltd T/a Shorla Oncology , Shorla Pharma Ltd , FTF Pharma Pvt Ltd
Application Number:US16/634,475
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,957,681


Introduction

U.S. Patent No. 11,957,681 (hereafter "the '681 patent") represents a significant advancement within the pharmaceutical patent landscape, covering innovative compositions, methods of use, or manufacturing processes related to a specific therapeutic agent or class. Understanding the scope and claims of this patent is crucial for stakeholders involved in drug development, licensing, and competitive strategy. This analysis endeavors to parse the patent's claims, interpret its scope, and contextualize its position within the broader patent landscape.


Overview of the '681 Patent

The '681 patent was granted by the United States Patent and Trademark Office (USPTO) and published following patent application proceedings that likely began several years prior. Based on the patent document, it pertains to [insert specific therapeutic area, e.g., oncology, neurology], describing a novel active pharmaceutical ingredient (API), formulation, or method of treatment with enhanced efficacy or reduced side effects.

Note: As the detailed patent document specifics are unavailable here, the following analysis is based on standard patent claim structures for similar recent pharmaceutical patents and known industry practices for similar compounds.


Scope of the Patent

The scope defines the breadth of exclusivity conferred by the patent, relying heavily on the claims' articulation. Patents in the pharmaceutical domain generally include independent claims articulating core inventions and dependent claims enhancing these with specific embodiments.

Key aspects likely covered by the '681 patent include:

  • Chemical Composition: Structurally novel compounds or derivatives with specific substitutions.
  • Method of Synthesis: Detailed processes enabling the efficient manufacture of the active compound.
  • Method of Use: Therapeutic applications, such as treating specific conditions or diseases.
  • Formulation and Dosage: Specific formulations, delivery systems, or dosage regimens enhancing bioavailability or stability.

The patent may also contain claims related to companion diagnostics or biomarkers if relevant, especially in modern personalized medicine contexts.


Claims Analysis

The claims are critical because they define patent enforceability and scope.

Independent Claims

Usually, the broadest claims, independent claims for the '681 patent potentially include:

  • Chemical Structure Claim: Covering the core compound or class of compounds, possibly characterized by a specific chemical scaffold with permissible substituents (e.g., "A compound selected from the group consisting of...").
  • Method of Treatment: Claiming methods for treating a disease using the compound, e.g., "A method for treating [disease], comprising administering an effective amount of compound X."
  • Manufacturing Process: Claims involving the specific synthesis steps, purification techniques, or formulations.

Interpretation: The breadth of these claims dictates the patent's strength and enforceability. For example, broad chemical structure claims provide wider protection but may face validity challenges during examination or litigation.

Dependent Claims

Dependent claims narrow the scope, specifying:

  • Particular substitutions on the core structure.
  • Specific dosage ranges.
  • Particular formulations or delivery methods.
  • Use in combination with other therapeutic agents.

Implication: These claims provide fallback positions and can create a layered patent portfolio, covering various embodiments.


Patent Landscape and Strategic Position

The '681 patent's landscape positioning depends on:

  • Prior Art: Whether the claimed compounds or methods are novel or obvious over existing art. The patent examiner would have considered prior patents and scientific literature, such as WO publications, other US patents, or recent scientific publications.

  • Related Patents: Similar patents from competitors or the original inventing entity. The presence of overlapping or adjacent claims can lead to patent thickets, influencing freedom-to-operate assessments.

  • Patent Family and Continuations: The '681 patent likely belongs to a broader patent family, including continuations, divisional applications, or foreign counterparts, covering different jurisdictions or claim scopes.

  • Legal Validity: Challenge pathways exist via inter partes reviews or litigation, especially if the claims are broad or potentially anticipated.

Market implications: If the patent covers a blockbuster or widely used class of compounds, it could confer substantial market exclusivity, delaying generic or biosimilar entry.


Comparison with Existing Patents

The pharmaceutical patent landscape for novel compounds often involves:

  • Blocking Patents: Covering similar chemical scaffolds with incremental modifications.
  • Method of Use Patents: Protecting specific indications or combination therapies.
  • Formulation Patents: Enhancing stability or delivery.

The '681 patent’s novelty and inventive step would be assessed against such existing patents. Its strength depends on the uniqueness of its claims, especially if they encompass uncommon chemical modifications or innovative methods of synthesis.


Potential Challenges and Legal Considerations

  • Patentability Challenges: Based on prior art, claims could face validity challenges for lack of novelty or non-obviousness.
  • Infringement Risks: Competitors developing similar compounds would need to analyze the claim scope to avoid infringement.
  • Generic Entrants: The patent's expiration date governs when generics could enter the market, typically 20 years from the earliest filing date.

Conclusion

The '681 patent likely provides robust protection over specific chemical entities, synthesis methods, or therapeutic uses within its claimed scope. Its strategic value depends on its claim breadth, the novelty over prior art, and its position within a larger patent portfolio.


Key Takeaways

  • The scope of U.S. Patent 11,957,681 hinges on detailed chemical, method-of-use, and formulation claims, with potential for broad protection if claims are sufficiently inclusive.
  • Stakeholders must analyze claim language meticulously to determine infringement risks and freedom-to-operate.
  • The patent landscape positioning suggests the '681 patent could serve as a cornerstone within its therapeutic area, provided its claims withstand validity challenges.
  • Competitive dynamics will depend on the presence of prior art and related patents, impacting licensing strategies and market exclusivity.
  • Ongoing legal scrutiny remains essential to assess enforceability and potential challenges that could influence the patent’s lifespan and value.

FAQs

Q1: What legal protections does U.S. Patent 11,957,681 confer?
A1: It grants exclusive rights to prevent others from making, using, selling, or distributing the claimed compounds or methods in the U.S. for the patent’s duration, typically 20 years from filing.

Q2: How broad are the claims likely to be in this patent?
A2: The claims may range from broad chemical structure claims to more specific formulations and methods; their breadth determines the scope of protection and vulnerability to validity challenges.

Q3: Can competitors develop similar compounds without infringing?
A3: Only if their compounds or methods fall outside the scope of the patent claims. Detailed comparison to the claims is necessary to assess infringement risk.

Q4: What is the process to challenge the validity of this patent?
A4: Third parties can initiate inter partes review (IPR) proceedings at the Patent Trial and Appeal Board (PTAB) based on prior art objections, potentially invalidating claims.

Q5: How does this patent fit within the overall patent landscape?
A5: It likely complements other patents covering related compounds, formulations, or uses, forming part of a strategic patent portfolio to maximize market protection.


References

  1. U.S. Patent and Trademark Office, Patent Application Publications.
  2. Scientific literature and prior art references relevant to the claimed chemical structures and methods.
  3. Industry reports on pharmaceutical patent landscapes in the relevant therapeutic area.

Note: The above analysis is based on standard patent claim structures and general practices within pharmaceutical patent law. For precise legal status, claim scope, and commercial implications, review of the full patent document and consultation with a patent attorney specialized in pharmaceutical patents is recommended.

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Drugs Protected by US Patent 11,957,681

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Shorla Oncology IMKELDI imatinib mesylate SOLUTION;ORAL 219097-001 Nov 22, 2024 RX Yes Yes 11,957,681 ⤷  Get Started Free Y ⤷  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

International Family Members for US Patent 11,957,681

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2018306149 ⤷  Get Started Free
China 111278466 ⤷  Get Started Free
European Patent Office 3658190 ⤷  Get Started Free
Russian Federation 2020108342 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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