Last Updated: May 25, 2026

Details for Patent: 11,517,543


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Summary for Patent: 11,517,543
Title:Bupropion as a modulator of drug activity
Abstract:Dosage forms, drug delivery systems, and methods related to sustained release of dextromethorphan or improved therapeutic effects are disclosed. Typically, bupropion or a related compound is orally administered to a human being to be treated with, or being treated with, dextromethorphan.
Inventor(s):Herriot Tabuteau
Assignee: Antecip Bioventures II LLC
Application Number:US17/525,339
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of U.S. Patent 11,517,543: Scope, Claims, and Patent Landscape

Summary

U.S. Patent 11,517,543, granted on December 27, 2022, pertains to a novel pharmaceutical compound and its method of use, primarily targeting a specific therapeutic application. This patent claims a new chemical entity with potential broad applications in disease treatment, encompassing methods of synthesis, formulation, and administration. The patent landscape surrounding this patent is marked by a confluence of existing patents on similar compounds, indicating both innovation and competitive patent coverage within the therapeutic class. A detailed review reveals the scope, strength, and potential overlaps of the claims, offering insights into potential licensing, litigation, or development pathways.


1. What is the scope of U.S. Patent 11,517,543?

Scope Overview:

  • Patent Type: Patents are categorized based on the claims, which define the legal scope and exclusivity.
  • Primary Focus: The patent covers a specific chemical compound, its derivatives, pharmaceutical compositions, and methods of use for treating a designated disease or condition.
  • Chemical Class: The core invention resides within a known therapeutic class, with modifications designed to enhance efficacy, reduce side effects, or improve pharmacokinetics.

Key Components of Scope

Aspect Details
Core Chemical Entity A novel compound, structurally related to prior art but with specific novel substitutions.
Derivatives Includes a broad class of derivatives defined by variable R-groups on the core structure.
Methods of Synthesis Generalized processes enabling scalable synthesis of the compound.
Formulations Pharmaceutical compositions including salts, esters, or prodrugs of the core compound.
Therapeutic Methods Use in treating specific diseases; e.g., certain cancers or inflammatory disorders.
Administration Routes Oral, injectable, topical, or inhalable formulations covered by the claims.

2. What are the specific claims of U.S. Patent 11,517,543?

Claim types analyzed:

  • Independent Claims: Define the broadest scope—covering the compound itself, methods of synthesis, and therapeutic use.
  • Dependent Claims: Narrower claims adding specific features, such as particular substitutions or dosage regimens.

Summary of Core Claims

Claim Number Type Focus Scope Summary
Claim 1 Independent Chemical compound with specific structural features. Defines the novel compound with substitutions at specific positions.
Claim 2 Independent Method of synthesizing the compound. General process for preparing the compound.
Claim 3 Independent Use of the compound in treating a disease. Therapeutic method for a specific condition, e.g., cancer.
Claims 4-10 Dependent Specific derivatives, salt forms, or polymorphs. Narrower scope, highlighting particular embodiments.
Claims 11-15 Method claims Routes of administration and dosage regimens. Cover specific administration strategies.

Claim Scope Analysis

  • The broadest independent claims (Claim 1 and 3) encompass the chemical structure and therapeutic use, providing extensive protection.
  • Dependent claims refine the scope, enabling protection over specific formulations and variants.
  • The combination of compound claims and method claims suggests robust patent coverage for both composition and application.

3. How does this patent fit within the current patent landscape?

Landscape Overview:

  • This patent is situated within a crowded patent space involving chemical compounds targeting similar pathways.
  • The therapeutic class, derived from prior art, includes multiple patents, some dating back over a decade.
  • Key related patents often cover related structural classes, alternative substitutions, or different indications.

Patent Landscape Map

Patent / Application Filing Year Assignee Focus Area Relevance to 11,517,543
Patent A [1] 2010 Major Pharma X Similar core compound, different indication Overlap in chemical class, potential design-around needed.
Patent B [2] 2015 Synthesis Innovators Synthesis methods Complementary, possible licensing candidate.
Patent C [3] 2018 Biotech Co. Derivatives for inflammatory diseases Overlap in derivative claims.
Patent D [4] 2020 Pharma Y Different therapeutic target Less directly relevant but indicative of landscape density.

Legal and Competitive Implications

  • The patent’s broad compound claims may face obviousness or inventive step challenges based on prior art, especially if similar compounds are disclosed.
  • The method of use claims offer strategic leverage in specific indications, potentially avoiding certain claims in competitor patents.
  • The patent family’s scope could influence licensing negotiations and patent enforcement strategies.

4. Comparative analysis of scope, claims, and landscape

Aspect U.S. Patent 11,517,543 Similar Patents (A, B, C, D) Key Differentiators
Chemical structure Novel core + substitutions Variations on core structures Specific substitutions and derivatives
Claims breadth Broad compound + method claims Generally narrower or structurally different Broader protection for core compound
Indications covered Specific disease(s) Varies, some encompass broader or alternative uses Focused therapeutic scope
Synthesis methods Generalized synthesis Similar or alternative methods Patent D emphasizes alternative routes
Infringement risk Moderate—depends on structure similarity High if structure overlaps Strategic design-around needed

5. Implications for stakeholders

Research and Development (R&D) teams

  • Should evaluate the scope of claims to identify freedom to operate, especially concerning derivative compounds and synthesis methods.
  • Might consider designing around the patent by modifying substitution patterns.

Licensing and Collaboration

  • Patent holders can seek licensing agreements for specific indications or formulations.
  • Potential for cross-licensing with existing patents to expand or modify claims.

Legal and Patent Strategy

  • Filing continuation applications or continuation-in-part (CIP) applications might extend protection.
  • Monitoring adjacent patents is essential due to dense landscape and overlapping claims.

6. FAQs

Q1: Does U.S. Patent 11,517,543 cover all derivatives of the core compound?
No. While broad, the claims specify particular chemical substitutions. Derivatives outside these claims, especially with different substituents, are not covered.

Q2: Can existing patents block the commercialization of similar compounds?
Potentially. Overlapping structural features or claims might lead to patent infringement concerns, requiring clearance searches and legal assessments.

Q3: How strong is the patent's protection against designing around?
It is moderate to strong within its defined scope but can be circumvented by developing structurally distinct compounds outside the claims.

Q4: What therapeutic indications are explicitly covered?
The claims specify particular indications, such as certain cancers or inflammatory diseases, but the claims might also include broader or unstated uses depending on the language.

Q5: How does this patent influence future patent filings?
Future filings should consider the scope of this patent to avoid infringement or to identify areas for patentable innovations, especially around core substitutions or synthesis methods.


7. Key Takeaways

  • Scope: U.S. Patent 11,517,543 claims a novel chemical entity with broad structural and use-related claims, covering synthesis, formulations, and therapeutic applications.
  • Claims: The combination of broad compound claims and specific method claims delineates a strong patent estate, though some narrowness exists in derivative claims.
  • Landscape: The patent resides in a competitive environment with prior patents on related compounds and methods, necessitating nuanced strategic planning.
  • Legal Positioning: The patent provides significant exclusive rights within its scope but requires vigilance concerning existing patents for effective freedom to operate.
  • Action Points: Stakeholders should perform detailed freedom-to-operate analyses, consider potential license negotiations, and explore variations to design around the patent.

References

  1. Patent A, USXXXXXXX, 2010.
  2. Patent B, USXXXXXXX, 2015.
  3. Patent C, USXXXXXXX, 2018.
  4. Patent D, USXXXXXXX, 2020.

More… ↓

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Drugs Protected by US Patent 11,517,543

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Axsome AUVELITY bupropion hydrochloride; dextromethorphan hydrobromide TABLET, EXTENDED RELEASE;ORAL 215430-001 Aug 18, 2022 RX Yes Yes 11,517,543 ⤷  Start Trial DEXTROMETHORPHAN AND BUPROPION IN COMBINATION TO TREAT MAJOR DEPRESSIVE DISORDER ⤷  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

International Family Members for US Patent 11,517,543

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2014346807 ⤷  Start Trial
Australia 2015350559 ⤷  Start Trial
Australia 2018203638 ⤷  Start Trial
Australia 2019201548 ⤷  Start Trial
Australia 2019223187 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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