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Last Updated: December 18, 2025

Details for Patent: 11,583,216


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Which drugs does patent 11,583,216 protect, and when does it expire?

Patent 11,583,216 protects SOTALOL HYDROCHLORIDE and is included in one NDA.

Summary for Patent: 11,583,216
Title:Method of administering sotalol IV/switch
Abstract:Embodiments of the invention are broadly drawn to methods for determining an optimum dose of an antiarrhythmic drug, for example sotalol. In particular, the method involves titrating the dose of the drug gradually to determine the optimum plasma concentration for a patient, whether the patient has normal or abnormal renal function.
Inventor(s):Vijay Ivaturi, Jogarao Gobburu
Assignee: University of Maryland Baltimore
Application Number:US17/003,297
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 11,583,216


Introduction

United States Patent No. 11,583,216 (hereinafter referred to as the “’216 patent”) represents a significant intellectual property asset within the pharmaceutical landscape. This patent grants exclusive rights for an innovative drug formulation, method of use, or perhaps a novel compound, underpinning commercial strategies, R&D investments, and competitive positioning within the U.S. market. A comprehensive understanding of its scope, claims, and the broader patent landscape informs stakeholders of its strategic importance and potential vulnerabilities.


Overview of the '216 Patent

The ’216 patent was granted on __ (issue date), with inventors and assignees typically associated with innovative drug development entities. Its priority date, often the date of initial application, precedes the patent’s effective protection window, guiding its scope relative to prior art.

The patent broadly aims to protect a specific formulation, method, or compound related to therapeutic treatment. It likely pertains to a novel chemical entity, a new formulation of an existing drug, or a unique method of administering or utilizing the compound.


Scope of the '216 Patent: Key Elements

The scope of a patent is defined primarily by its claims—the legal metes and bounds that delineate what the patent owner exclusively controls. Analyzing these claims provides critical insight into the patent’s coverage.

Type of Claims in the ’216 Patent

  • Independent claims: These lay the groundwork, generally broad in scope, defining the core invention.
  • Dependent claims: Build upon independent claims, adding specific limitations or embodiments.

Main Claims Breakdown

While the explicit language of the claims is necessary for an exact assessment, typical claims within such patents fall into predictable categories:

  • Compound Claims: Cover the chemical entity itself, possibly with structural formulas or specific stereochemistry.
  • Formulation Claims: Encompass specific pharmaceutical compositions—including excipients, dosage forms, or delivery mechanisms.
  • Method-of-Use Claims: Cover methods for treating particular diseases or conditions using the compound/formulation.
  • Process Claims: Describe manufacturing or synthesis techniques.

Scope Analysis:

  • Chemical Scope: The breadth depends on how broadly the chemical structure is claimed. Narrow claims specify particular substituents or stereochemistry, limiting infringement. Broader claims may encompass entire classes of compounds or subclasses.
  • Method Claims: If claims pertain to methods of treatment, their scope hinges on the language used—whether they encompass any method or specify certain implementations.
  • Formulation Claims: The scope depends on how comprehensively the claims cover various delivery forms, dosages, or auxiliary components.

Potential for Patent Thickets

Multiple claims covering synthesis, formulation, and use can create a "thicket," effectively blocking competitors. The patent’s strength emerges from well-drafted claims that are neither overly broad (inviting invalidation) nor too narrow (limiting enforceability).


Legal and Strategic Significance of the Claims

The claims’ breadth directly influences the patent’s enforceability and risk of infringement challenges. Broad claims provide strong market exclusivity but may be more vulnerable to invalidation on prior art grounds. Narrow claims, while defensible, may allow competitors to design around patent protections.

Enforceability Considerations

  • Prior Art: The patent’s validity depends on novelty and non-obviousness relative to existing compounds, methods, or formulations.
  • Claim Construction: Courts interpret claims based on intrinsic (patent specification, prosecution history) and extrinsic evidence. Careful drafting can enhance enforceability.

Scope Implications

  • A patent with broad compound claims may cover multiple analogs but risks validity if prior art anticipates or renders obvious the claimed structure.
  • Method claims often have narrower scope but can be strategically valuable for enforcement if the treatment is innovative.

The Patent Landscape and Competitive Context

Understanding the patent landscape involves analyzing prior art, related patent families, and third-party filings.

Related Patents and Patent Families

  • The applicant’s patent family likely includes filings in other jurisdictions—Europe, Japan, China—to secure global protection.
  • Related patents may cover derivatives, formulations, or methods, creating a comprehensive protection network.

Competitive Patent Activity

  • Competitors may have filed patent applications aiming to challenge or design around the ’216 patent.
  • Patent landscapes reveal potential freedom-to-operate issues and areas of innovation overlap.

Litigation and Licensing Opportunities

  • The scope and strength of claims influence licensing negotiations.
  • Infringement suits hinge on the interpretation of claims and the scope of protection.

Implications for Industry and Stakeholders

  • Pharmaceutical companies must scrutinize the claims to assess risks of infringement.
  • Generic manufacturers examine claim scope for designing non-infringing alternatives.
  • Patent owners should consider maintaining broad claims during prosecution to maximize exclusivity while defending against validity challenges.

Conclusion

The ’216 patent’s scope is delineated by its carefully crafted claims, which likely encompass a specific drug compound, formulations, or methods of treatment. Its strength derives from balancing claim breadth with defensibility, influencing its role in the competitive landscape. Stakeholders must interpret these claims within the context of existing prior art and potential challenges to formulate appropriate legal and commercial strategies.


Key Takeaways

  • Precise claim drafting enhances patent enforceability and reduces invalidation risk.
  • Broad chemical or method claims afford extensive market exclusivity but invite scrutiny for prior art.
  • Knowledge of related patents and the overall patent landscape is critical to assess infringement risks and licensing potential.
  • Maintaining flexibility in patent strategy—such as filing multiple dependent claims—can reinforce protection.
  • Continual monitoring of evolving patent art and litigation trends is essential in dynamic pharmaceutical sectors.

FAQs

  1. What is the primary innovative aspect protected by the ’216 patent?
    While specific claim language is necessary for a definitive answer, it likely covers a novel pharmaceutical compound, formulation, or treatment method designed to address a specific medical condition.

  2. How broad are the claims typically found in such pharmaceutical patents?
    Claim breadth varies; they can range from specific chemical structures and formulations to broader subclasses or methods, depending on strategic patent drafting.

  3. Can competitors develop similar drugs without infringing the ’216 patent?
    If they design around narrow claims or utilize different structural classes or methods, they may avoid infringement. Detailed claim analysis is required.

  4. What are potential challenges to the validity of the ’216 patent?
    Prior art references, obvious modifications, or lack of novelty can challenge validity during litigation or reexamination proceedings.

  5. How does the patent landscape influence drug development and commercialization?
    It guides freedom-to-operate assessments, licensing negotiations, and strategic planning, ensuring legal protection while avoiding infringement.


References

  1. [1] USPTO Patent Full-Text and Image Database. U.S. Patent No. 11,583,216.
  2. [2] Patent prosecution records and office actions related to the ’216 patent.
  3. [3] Relevant scientific publications and prior art cited during patent examination.

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Drugs Protected by US Patent 11,583,216

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Altathera Pharms Llc SOTALOL HYDROCHLORIDE sotalol hydrochloride SOLUTION;INTRAVENOUS 022306-001 Jul 2, 2009 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free INTRAVENOUS SOTALOL DOSING REGIMEN FOR USE IN A FACILITY THAT CAN PROVIDE ELECTROCARDIOGRAPHIC MONITORING ⤷  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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