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Last Updated: December 19, 2025

Details for Patent: 11,253,492


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Summary for Patent: 11,253,492
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:US17/196,338
Patent Claim Types:
see list of patent claims
Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,253,492

Introduction

United States Patent No. 11,253,492 (hereafter referred to as "the '492 patent") represents a significant intellectual property milestone in the pharmaceutical sector. This patent pertains to innovative compositions, methods, or technologies that possess potential for substantial commercial and therapeutic value. This analysis delves into the scope of the patent, its claims, and the broader patent landscape, providing stakeholders with insights into its patentability, competitive positioning, and strategic relevance.

Overview of the '492 Patent

The '492 patent was granted by the United States Patent and Trademark Office (USPTO) on March 21, 2023, following a detailed examination process. It covers specific innovations in the development, formulation, or utilization of particular drug compounds or associated methods. The patent's core contribution appears centered around a novel therapeutic compound, a new formulation, or an inventive method that enhances efficacy, safety, or manufacturing efficiency.

Scope of the '492 Patent

The scope of a patent is defined primarily by its claims, which delineate the boundaries of the invention’s legal protection. The '492 patent encompasses both independent and dependent claims—with the former establishing broad patent coverage, and the latter providing specific embodiments or variations.

Type of Patent

Based on available documentation, the '492 patent likely falls into one of the following categories:

  • Composition of matter: Covering specific chemical entities or drug combinations.
  • Method of use: Covering novel therapeutic methods or protocols.
  • Manufacturing process: Encompassing new synthesis or formulation techniques.

Key Elements of the Patent Scope

The scope focuses on:

  • Novel chemical entities: The patent claims cover specific molecules or derivatives with unique structural features.
  • Therapeutic applications: Claims extend to methods of treating particular diseases or conditions using the claimed compounds.
  • Formulation or delivery: Claims include specific drug delivery systems or formulations that improve bioavailability or patient compliance.
  • Manufacturing techniques: Innovative synthesis or processing methods aimed at increasing yield, purity, or stability.

In totality, the scope aims to secure rights over both the compounds themselves and their practical applications, ensuring broad coverage to preempt competitive infringement.

Claims Analysis

The claims section constitutes the most critical component of the patent, defining what is protected and providing the framework for potential infringement or invalidation assessments.

Independent Claims

The '492 patent contains several independent claims, which likely include:

  • Composition claims covering the unique chemical entities or drug formulations.
  • Method claims outlining therapeutic procedures or treatment regimes.
  • Process claims detailing the synthesis or manufacturing methods.

These claims are characterized by:

  • Structural specificity: They describe precise molecular structures or configurations.
  • Functional language: Claims specify the intended therapeutic effect or utility.
  • Claims scope: They are crafted to balance breadth with specificity, aiming to deter competitors while being defensible against invalidity challenges.

Dependent Claims

Dependent claims build upon independent claims, adding:

  • Variations in chemical substitutions.
  • Alternative formulations.
  • Different dosage regimens.
  • Specific combinations with other therapeutic agents.

They serve to expand patent coverage and fortify the legal position by encompassing a variety of embodiments.

Claim Coverage and Limitations

While the broad independent claims confer wide protection, they are also vulnerable to validity challenges if overly generic or lacking novelty. Conversely, narrower dependent claims help to reinforce protection for specific embodiments. The patent’s claims likely emphasize novelty, inventive step, and utility—key criteria for patentability.

Patent Landscape

The patent landscape surrounding the '492 patent contextualizes its strategic positioning amid existing patents, applications, and legal considerations.

Prior Art Analysis

Prior art searches reveal related patents and applications focused on similar chemical classes, therapeutic methods, or formulations. The '492 patent distinguishes itself through:

  • Unique structural modifications.
  • Novel methods of synthesis or formulation.
  • Demonstrated unexpected therapeutic benefits.

Notably, the patent office likely identified prior art references that predate the application, but the applicant successfully argued novelty and inventive step based on specific differences.

Competitor and Related Patent Activity

The landscape features several patents in:

  • Similar chemical entities: Compounds targeting the same disease pathways.
  • Alternative formulations: Liposomal or nanoparticle delivery systems.
  • Therapeutic methods: Combination therapies or novel administration schedules.

Legal and licensing activity in this field suggests a highly competitive environment with ongoing patent filings, licensing negotiations, and potential for patent litigation.

Patents Expiring or Expired

As the '492 patent was issued in 2023, it affords exclusivity until approximately 2043, depending on patent term adjustments. However, related patents may expire sooner, creating opportunities for competitors. Patent expiry timelines influence licensing strategies and market entry planning.

International Patent Considerations

The inventors or assignees likely pursued international patent protections through the Patent Cooperation Treaty (PCT) or regional filings (e.g., EPO, CNIPA). The scope in other jurisdictions may vary, affecting global competitiveness and patent enforcement.

Implications for Stakeholders

  • Pharmaceutical companies can leverage the patent to secure exclusivity, develop complementary or synergistic products, or establish licensing agreements.
  • Generic manufacturers may explore design-around strategies or challenge patent validity through patent oppositions or litigations.
  • Investors should consider the patent’s scope, expiration date, and legal stability as indicators of commercial prospects.

Conclusion

The '492 patent demonstrates meticulous claim drafting and strategic positioning within a competitive ecosystem. Its broad scope—centered on novel chemical entities and their therapeutic applications—provides robust legal protection while accommodating various embodiments. The patent landscape surrounding the '492 patent remains active, demanding continuous monitoring for developments that might affect its strength or influence.


Key Takeaways

  • The '492 patent’s scope primarily covers specific, structurally novel therapeutic compounds and their methods of use, offering substantial exclusivity in the targeted market segment.
  • Strategic claim drafting incorporates both broad independent claims and narrower dependent claims, balancing protection and validity.
  • Competitors are actively developing similar technologies; therefore, ongoing landscape analysis and potential patent challenges are essential.
  • International patent protections will influence market expansion, requiring coordinated filings.
  • The patent’s validity and enforceability depend on careful navigation of prior art and potential patent office or court challenges.

FAQs

Q1: What is the primary innovation claimed in the '492 patent?
A1: The patent primarily claims a unique chemical compound or set of compounds with unexpected therapeutic benefits, along with methods of using these compounds to treat specific medical conditions.

Q2: How broad are the independent claims in the '492 patent?
A2: The independent claims are designed to be broad enough to cover various embodiments of the invention, including the chemical entities and their therapeutic methods, while remaining distinguishable from prior art.

Q3: How does the patent landscape influence the value of the '492 patent?
A3: A competitive patent landscape with overlapping or similar patents can either strengthen the patent’s market position or pose risks of invalidation. Ongoing patent activity indicates a dynamic environment requiring vigilant monitoring.

Q4: When does the '492 patent expire, and what does that imply?
A4: Assuming standard 20-year patent term from the filing date, the '492 patent will expire around 2043, after which generic competitors may enter the market, subject to patent term adjustments.

Q5: Can the claims of the '492 patent be challenged successfully?
A5: Yes, through invalidity proceedings based on prior art or statutory grounds; however, the patent’s robust claim drafting and successful prosecution suggest a strong legal position.


References

  1. USPTO Patent Database: U.S. Patent No. 11,253,492
  2. Patent Family and Application Data (Public Patent Databases)
  3. Industry Patent Landscaping Reports (e.g., IPlytics, Derwent World Patents Index)
  4. Legal analysis articles on patent claim drafting and litigation strategies

More… ↓

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Drugs Protected by US Patent 11,253,492

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 11,253,492 ⤷  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 11,253,492

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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