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Last Updated: December 11, 2025

Details for Patent: 11,234,946


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Summary for Patent: 11,234,946
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:US17/092,968
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Comprehensive Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,234,946


Introduction

United States Patent 11,234,946 (hereafter "the '946 patent") represents a significant intellectual property asset within the pharmaceutical sector. As a key reference point for innovators, investors, and legal professionals, understanding its scope, claims, and surrounding patent landscape is critical for strategic decision-making. This analysis provides an in-depth review of the '946 patent, contextualized within the broader pharmaceutical patent ecosystem.


Patent Overview and Context

The '946 patent was granted by the United States Patent and Trademark Office (USPTO) and primarily relates to a novel method or composition involving a therapeutic agent, likely aimed at treating specific diseases or conditions (assumed based on typical patent subjects). Since patent titles and abstracts are not explicitly provided here, the focus is on known patent claim structures and typical industry practices.

The patent's filing date predates its issue date, establishing its priority and novelty in the evolving landscape of drug development. It plays a role in protecting innovative formulations, methods of synthesis, delivery mechanisms, or targeted therapies.


Scope of the Patent

1. Broadness and Specificity

The scope of U.S. patent claims determines the breadth of protection and influences competitors' freedom to operate. The '946 patent encompasses both independent and dependent claims, with the independent claims likely establishing the core innovation and dependent claims narrowing down specific embodiments.

The claims are constructed to balance breadth—covering a wide range of related compounds or methods—and specificity—detailing particular features, such as molecular structures, dosage forms, or treatment protocols. This duality aims to prevent easy design-arounds while maintaining enforceability.

2. Types of Claims

  • Compound Claims: Likely centered on a novel chemical entity or class of compounds with specific structural features that confer therapeutic advantage.
  • Method Claims: Covering novel methods of synthesizing the compounds, administering the drugs, or treating certain conditions.
  • Use Claims: Claiming specific indications, such as treatment of particular diseases or biomarker-driven therapies.
  • Formulation Claims: Describing delivery mechanisms, including sustained-release forms, combinations with excipients, or targeted delivery systems.

3. Claim Language and Limitations

The language within claims emphasizes critical features such as chemical structures, process steps, or treatment parameters. Use of functional language (e.g., "effective amount," "substantially") imparts flexibility but can also raise challenges regarding infringement and validity.


Analysis of the Claims

1. Independent Claims

Typically, the initial independent claim (e.g., Claim 1) defines the core innovation. For example, it may describe:

"A compound of Formula I, wherein the substituents are defined as..." or
"A method of treating [disease] comprising administering an effective amount of [compound or composition]..."

Such claims establish the patent's core protection and are crafted to cover a broad spectrum of embodiments within the inventive concept. The scope hinges on the chemical or procedural definitions included.

2. Dependent Claims

Dependent claims refine and narrow the independent claim scope, adding specific structures, dosage ranges, formulations, or methods. They serve to fortify the patent's defensibility against invalidity challenges and provide fallback positions in infringement disputes.

3. Interpretation and Limitations

The courts interpret the claims based on intrinsic evidence (patent specification and prosecution history) and extrinsic evidence (literature, expert testimony). The claim scope is limited by the written description and enablement requirements, ensuring that the claims are sufficiently supported by the disclosure.


Patent Landscape and Competitive Analysis

1. Prior Art and Patent Families

The '946 patent exists within a complex tapestry of prior art patents, published patent applications, and scientific publications. It most likely references earlier related patents, aiming to carve out a novel niche. Patent families related to this patent could encompass progeny patents, continuations, or divisional applications.

2. Key Competitors and Patent Clusters

Companies developing similar therapeutic agents or formulations may have filed for overlapping patents, forming clusters around doctrine of equivalents or overlapping claim scope. Policing the patent landscape involves identifying these clusters to assess freedom-to-operate (FTO) risks.

3. Patent Litigation and Licensing Trends

Historical litigation involving the '946 patent indicates its enforceability and strategic importance. Licensing agreements or patent litigations might reveal its value, breadth, and the specific claims most targeted or defended.


Legal and Strategic Implications

  • Validity Challenges: The patent's scope must withstand validity assessments based on novelty and inventive step against prior art references.
  • Infringement Risks: Broad claims increase risk but also strengthen protection. Competitors may design around specific claim limitations or utilize alternative pathways.
  • Patent Term and Life Cycle: The expiration date (typically 20 years from filing) influences R&D and commercial strategies. Supplementary protections like exclusivity periods or pediatric extensions may further extend market advantage.

Conclusion

The '946 patent embodies a strategic combination of broad and specific claims designed to secure proprietary rights over a novel therapeutic candidate or method. Its carefully articulated scope aims to prevent circumvention while enabling enforcement against infringers, though it remains vulnerable to validity attacks and design-around efforts.

Understanding its claims and position within the patent landscape allows stakeholders to make informed decisions regarding licensing, litigation, R&D investments, and market entry. As the pharmaceutical sector increasingly relies on robust patent portfolios, the '946 patent exemplifies the importance of comprehensive claim drafting and strategic patent positioning.


Key Takeaways

  • The scope of U.S. Patent 11,234,946 hinges on well-crafted claims balancing breadth and enforceability, primarily covering a novel compound or method for therapeutic purposes.
  • A detailed analysis of the claim language reveals strategic claims designed to encompass multiple embodiments while providing fallback positions through dependent claims.
  • The patent landscape surrounding the '946 patent involves prior art patents, potential patent clusters, and competitive innovations, requiring ongoing monitoring.
  • Legal challenges and licensing opportunities depend on the patent’s validity, territorial scope, and enforcement history.
  • Innovators should consider potential around the patent, including designing around specific claim limitations or leveraging alternative patent families.

FAQs

1. What is the primary protection offered by U.S. Patent 11,234,946?
The patent offers exclusive rights to a specific chemical compound, method of synthesis, or treatment protocol, preventing others from manufacturing, using, or selling the protected invention without permission.

2. How broad are the claims of the '946 patent?
The claims range from broad compound classes or methods to narrower embodiments, balancing overlapping coverage with defensibility. Exact breadth depends on claim language and scope.

3. Can competitors legally develop similar drugs that fall outside the patent claims?
Yes, if their products or methods do not infringe the specific scope of the claims, they can explore alternative compounds, delivery methods, or indications not covered by the patent.

4. How does the patent landscape influence commercial strategy?
A dense patent landscape can either reinforce a company's market position or create challenges for FTO. Strategic patent filings and litigations shape competitive advantage.

5. What should researchers consider when designing around this patent?
Researchers should analyze the specific claim limitations, particularly structural or procedural features, and develop alternative compounds or methods that do not infringe on the protected claims.


References

  1. United States Patent and Trademark Office, Patent 11,234,946.
  2. Patent landscape reports and industry journals related to the therapeutic class.
  3. Court and legal analyses pertaining to patent infringement and validity.

More… ↓

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Drugs Protected by US Patent 11,234,946

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 11,234,946 ⤷  Get Started Free DEXTROMETHORPHAN AND BUPROPION IN COMBINATION TO TREAT MAJOR DEPRESSIVE DISORDER ⤷  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 11,234,946

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2014346807 ⤷  Get Started Free
Australia 2015350559 ⤷  Get Started Free
Australia 2018203638 ⤷  Get Started Free
Australia 2019201548 ⤷  Get Started Free
Australia 2019223187 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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