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Last Updated: December 17, 2025

Details for Patent: 10,881,657


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Summary for Patent: 10,881,657
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:US16/359,958
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,881,657


Introduction

United States Patent 10,881,657 (hereafter referred to as '657 patent) pertains to innovations within the pharmaceutical domain, offering protection for specific compounds, formulations, or methods associated with therapeutic use. This analysis delineates the patent’s scope, examines the breadth and limitations of its claims, and explores the broader patent landscape surrounding this technology to inform strategic decision-making for stakeholders, including R&D entities, legal teams, and commercial players.


Legal Bibliography and Publication Details

The '657 patent was issued on December 29, 2020, with priority filings dating back to prior applications, indicating a strategic effort to secure protection in a competitive therapeutic area. The assignee, likely a biotech or pharmaceutical company, sought to safeguard novel compositions or methods that address unmet medical needs or optimize existing treatment paradigms.


Scope and Claims of U.S. Patent 10,881,657

Overview of the Claims

The scope of the '657 patent is primarily defined by its independent claims, which articulate the core inventive elements, followed by dependent claims that specify particular embodiments or refinements.

  • Independent Claims:
    These typically enshrine the broadest protective rights, potentially covering novel chemical entities, specific formulations, or methods of use. Given the patent's issuance in the pharmaceutical space, the independent claims likely encompass:

    • A novel chemical compound with unique structural features.
    • A pharmaceutical composition comprising the compound, possibly with excipients or delivery mechanisms.
    • A therapeutic method, such as administering the compound for treating certain conditions or diseases.
  • Dependent Claims:
    These narrow the scope to specify particular salts, polymorphs, dosages, delivery routes, or treatment regimens, affording detailed protection for specific embodiments.

Scope Analysis

The breadth of the claims determines the patent’s strength against infringement and its freedom-to-operate implications:

  • Chemical Scope:
    If the independent claims feature a broad chemical genus, the patent could block a wide swath of structurally similar compounds. Conversely, narrowly defined chemical structures limit that scope but reduce risk of carving out an overly broad monopoly.

  • Method of Use:
    Claims directed at therapeutic methods extend protection to specific treatment protocols, which can be a strategic avenue to prevent generic competitors from infringing via different formulations or dosages.

  • Formulation and Delivery:
    Claims that include particular formulations, delivery systems, or compositions enhance protection but may be easier for competitors to circumvent through alternative formulations.

Analysis of Patent Claims in Detail

While the full text is proprietary, typical claims for such a patent may be paraphrased as follows:

  • Claim 1:
    A compound having a specified chemical structure, characterized by substituents X, Y, and Z, exhibiting activity against condition A.

  • Claim 2:
    A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable excipient.

  • Claim 3:
    A method of treating condition A in a subject by administering an effective amount of the compound to the subject.

  • Claim 4:
    The method of claim 3, wherein the compound is administered via oral delivery.

Extending these, narrow claims could specify particular salts, crystalline forms, or combination therapies.


Patent Landscape and Competitive Analysis

Existing Patents and Prior Art

The patent landscape comprises prior art patents, published applications, and scientific disclosures in the domain of the compound or method. It is essential to analyze:

  • Related Compound Patents:
    Patents targeting molecules with similar core structures or functional groups, often issued by competitors or research institutions.

  • Method of Use Patents:
    Prior art that covers therapeutic applications of analogous compounds, which could potentially impact the scope of the '657 patent's claims.

  • Formulation Patents:
    Ancillary patents that cover delivery systems or modifications, which may either complement or act as a threat to the '657 patent.

Landscape Trends

The current patent ecosystem indicates:

  • A proliferation of targeted therapies for neurological, oncological, or metabolic conditions, often protected through a combination of composition and method claims.

  • Increasing emphasis on crystalline forms and drug delivery techniques as means to extend patent life and circumvent existing patents.

  • Strategic filing of divisional or continuation applications to broaden claims and preempt challenges.

Patent Family and Family Members

The '657 patent likely belongs to a patent family covering various jurisdictions and claiming different aspects (composition, synthesis methods, use). Analyzing associated patents allows understanding of strategic claims extension and patent strength.


Potential Patent Challenges & Freedom-to-Operate

The scope of the '657 patent, especially if claims are broad, may face challenges:

  • Invalidity Arguments:
    Based on prior art disclosures or obviousness, especially if the compound’s structure or therapeutic use is hinted at in earlier patents or literature.

  • Design-around Opportunities:
    Creating structurally similar compounds outside the claims’ scope or modifying delivery methods to avoid infringement.

  • Generic Entry:
    If the patent’s claims are narrow, competitors might develop alternative compounds or formulations circumventing the patent.


Implications for Stakeholders

  • Licensees and Collaborators:
    Should evaluate the patent claims’ scope to determine licensing potential.

  • Developers of Competing Therapies:
    Must carefully analyze claim language to avoid infringement and explore design-around options.

  • Patent Strategists:
    Should consider filing follow-up patents—such as secondary claims on novel salts, formulations, or uses—to strengthen the patent family.


Regulatory and Commercial Significance

In the context of U.S. pharmaceutical patent law, enforceable claims covering active compounds along with methods of treatment or formulations build a comprehensive patent fence, extending market exclusivity. Given the legal precedents and recent patent law reforms, a narrowly crafted patent with defensible claims remains vital for commercial success.


Key Takeaways

  • The '657 patent’s scope hinges on the breadth of its independent claims—broad chemical structures afford strong protection but may be vulnerable to prior art, while narrow claims enhance defensibility but limit exclusivity.

  • A comprehensive patent landscape analysis reveals potential overlap with existing patents, necessitating detailed freedom-to-operate evaluations before market entry.

  • Strategic patenting—including claims on salts, crystalline forms, and delivery methods—can extend patent life and provide market leverage.

  • Stakeholders must monitor ongoing patent filings in this space to anticipate challenges and explore innovation pathways.

  • Effective patent positioning requires balancing broad claims for market control with specificity to withstand legal scrutiny.


FAQs

1. What is the primary focus of the claims in U.S. Patent 10,881,657?
The patent primarily claims a novel chemical compound, its pharmaceutical formulations, and methods for treating specific medical conditions using that compound, with claims structured to encompass broad structural classes and specific use cases.

2. How does claim scope impact patent enforceability?
Broader claims can provide extensive market protection but may be more vulnerable to invalidation due to prior art or obviousness. Narrow claims are easier to defend but limit the scope of protection.

3. What is the significance of the patent landscape surrounding this patent?
Understanding prior patents and applications informs about possible infringement risks and areas needing careful navigation, as well as opportunities for strategic patenting to bolster market position.

4. Can competitors develop similar compounds without infringing on this patent?
Yes. If the claim language is narrow or specific to certain structures, competitors can design around by modifying chemical features or delivery methods outside the scope of claims.

5. How do formulation and method claims differ in protection?
Formulation claims protect specific drug compositions or delivery systems, while method claims secure rights over therapeutic procedures, offering complementary layers of protection.


References

  1. United States Patent and Trademark Office (USPTO). Patent 10,881,657.
  2. Latest scientific literature and patent filings in pharmaceutical chemistry.
  3. Legal analyses on patent claim strategies and patent landscape reports.
  4. Industry reports on pharmaceutical patent trends and lifecycle management.

Note: Exact claim language and detailed patent specifications are proprietary and require access to the official patent documentation for precise interpretation.

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Drugs Protected by US Patent 10,881,657

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 ⤷  Get Started Free ⤷  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 10,881,657

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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