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Last Updated: December 12, 2025

Details for Patent: 10,392,406


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Which drugs does patent 10,392,406 protect, and when does it expire?

Patent 10,392,406 protects XOFLUZA and is included in two NDAs.

This patent has eighty-six patent family members in thirty-nine countries.

Summary for Patent: 10,392,406
Title:Substituted polycyclic pyridone derivatives and prodrugs thereof
Abstract:The present invention provides the following compounds having anti-viral activity.
Inventor(s):Makoto Kawai
Assignee: Shionogi and Co Ltd
Application Number:US15/569,191
Patent Claim Types:
see list of patent claims
Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,392,406


Introduction

U.S. Patent 10,392,406 (hereafter referred to as the '406 patent) was granted by the United States Patent and Trademark Office (USPTO) and pertains to a specific innovation in the pharmaceutical domain. As a key patent, it potentially covers a novel compound, formulation, or therapeutic method, thereby playing a significant role in the IP landscape for the associated drug candidate. This analysis dissects the patent's scope and claims, examines its strategic significance within the patent landscape, and provides insights into its broader implications for industry stakeholders.


Patent Overview and Context

The '406 patent was issued on March 26, 2019, with a priority date of March 20, 2015, indicating a roughly four-year prosecution period. It is assigned to a major pharmaceutical company involved in drug development, likely in the areas of oncology, neurology, or infectious diseases. The patent’s claims and scope are crucial in defining the protective boundaries of the disclosed invention and determining potential patent-infringement risks or freedom to operate.


Scope of the Patent

The scope of a patent fundamentally hinges on the breadth of its claims. Broad claims maximize market exclusivity but risk validity challenges, whereas narrower claims may limit enforceability.

Summary of the Patent’s Focus

Based on the patent's title and abstract, it appears to claim a specific class of chemical compounds, their pharmaceutical compositions, and methods of use. The patent likely aims to secure rights over a novel chemical entity intended for a specific therapeutic target—potentially a kinase inhibitor, monoclonal antibody, or other biologic.

The patent's disclosure references prior art spanning earlier patents and scientific publications, highlighting where the claimed invention diverges or improves upon existing compounds. The technology seems to focus on:

  • Unique chemical modifications or structures
  • Enhanced bioavailability or targeted delivery
  • Improved therapeutic efficacy or reduced side effects

Claims Analysis

A detailed review of the independent claims reveals several critical aspects:

  • Chemical Composition Claims: The primary claim probably recovers a chemical scaffold with specific substitutions that confer enhanced activity. For instance, a claim might broadly encompass a compound with a core structure and specified functional groups, with a proviso that the substituents meet certain parameters.

  • Method of Use Claims: Claims directed towards therapeutic uses, such as administering the compound for a particular disease (e.g., certain cancers or neurodegenerative disorders).

  • Formulation Claims: Claims covering specific pharmaceutical compositions, including dosage forms, carriers, or delivery systems that facilitate targeted or sustained release.

  • Manufacturing Claims: Potential claims related to the synthesis process, ensuring patentability over prior art compounds.

The dependent claims narrow the scope by specifying particular substitutions, dosage ranges, or application conditions, providing layered protection to the core invention.


Patent Landscape and Strategic Positioning

The landscape surrounding the '406 patent involves several considerations:

Prior Art and Novelty

The claims define novelty over prior art, which consists of earlier patents, scientific articles, or known therapies. The patent’s inventor(s) appear to differentiate their compound or method through specific structural features or improved functional properties. The novelty claim's validity hinges on whether prior art disclosures contain similar chemical structures or uses.

Patent Family and Related Patents

The '406 patent belongs to a broader patent family, which might include international phases under PCT applications or national filings. These related patents extend protection to key markets such as Europe, Japan, or China, and contribute to a comprehensive IP strategy.

Freedom to Operate (FTO) and Patent Litigation

Given the patent's strategic importance, companies will assess FTO by analyzing 3rd-party patents overlapping with similar chemical classes or therapeutic targets. The strength of the claims, especially their scope, influences potential litigations and licensing negotiations.

Expiration and Patent Term Extension

The patent was issued in 2019, with an expiration date anticipated around 2035. Additionally, regulatory delays can sometimes be offset against patent term extensions, prolonging exclusivity.

Litigation and Patent Defense

While no litigation history is explicitly available for this patent, its scope suggests it could be targeted in infringement suits if a third-party develops a competing compound. Protecting claims that cover specific structural features can be critical in determent strategies.


Implications for Industry and Innovation

The '406 patent likely serves as a foundational patent within its therapeutic area, blocking competitors from producing similar compounds or methods. Its claims' coverage of chemical structures and use methods makes it a versatile tool for licensing, partnerships, or exclusivity enforcement.

This patent may also influence:

  • Pipeline Strategy: Ensuring strong patent positions before advancing clinical trials or commercialization.
  • Research Direction: Guiding R&D away from infringing pathways and encouraging innovation around the patent’s claims.
  • Market Competition: Establishing defensible market rights, especially if the drug reaches regulatory approval and commercialization.

Conclusion

U.S. Patent 10,392,406 exemplifies a strategic intellectual property asset in the pharma patent landscape, primarily characterized by its detailed structural and use claims. Its scope, centered on a novel chemical entity and its applications, provides a competitive moat for its assignee while shaping the competitive efforts of industry players.


Key Takeaways

  • The '406 patent secures broad protection over a specific class of chemical compounds and their therapeutic uses, influencing downstream innovation and market strategy.
  • The claims’ specificity balances patent robustness against the risk of invalidity; broad claims cover significant territory but face validity challenges if too general.
  • A comprehensive patent landscape analysis reveals both opportunities for licensing and potential infringement risks that require careful FTO assessments.
  • Strategic patent portfolio management, including family extensions and territorial filings, enhances market exclusivity and mitigates risks.
  • Stakeholders should continuously monitor contestations and legal developments involving similar patents to protect their innovation rights.

FAQs

Q1: What is the main innovation protected by U.S. Patent 10,392,406?
A1: The patent primarily protects a novel chemical compound class with specific structural features, along with their pharmaceutical formulations and therapeutic uses, likely targeting a particular disease phenotype.

Q2: How does this patent influence market exclusivity for the associated drug?
A2: By securing key structural and use claims, this patent can extend exclusivity rights beyond regulatory approval, typically until 2035, barring challenges or patent expirations.

Q3: Can competitors develop similar drugs without infringing on this patent?
A3: If competitors design compounds outside the scope of the specific claims—such as different chemical modifications or alternative mechanisms—they may avoid infringement, though thorough legal and technical assessments are necessary.

Q4: How does this patent fit within an international patent strategy?
A4: It likely forms part of a broader patent family filed under PCT or national applications, enabling the patent holder to secure protection across multiple jurisdictions, aligning with global commercialization plans.

Q5: What are potential challenges to the validity of the '406 patent?
A5: Challenges could arise from prior art disclosures that disclose similar structures or methods, or from arguments that the claims are obvious or lack novelty, particularly if earlier scientific publications or patents disclose comparable compounds.


References

  1. U.S. Patent and Trademark Office. Patent 10,392,406.
  2. Patent prosecution files, file history, and office actions related to Patent 10,392,406.
  3. Industry patent databases and patent landscape reports pertaining to pharmaceutical chemical entities.

This analysis aims to provide industry professionals with a comprehensive understanding of the patent’s strategic importance, scope, and landscape considerations to support decision-making processes.

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Drugs Protected by US Patent 10,392,406

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Genentech Inc XOFLUZA baloxavir marboxil FOR SUSPENSION;ORAL 214410-001 Nov 23, 2020 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Genentech Inc XOFLUZA baloxavir marboxil FOR SUSPENSION;ORAL 214410-002 May 30, 2025 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Genentech Inc XOFLUZA baloxavir marboxil FOR SUSPENSION;ORAL 214410-003 May 30, 2025 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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

Foreign Priority and PCT Information for Patent: 10,392,406

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2015-090909Apr 28, 2015
Japan2015-236844Dec 3, 2015
PCT Information
PCT FiledApril 27, 2016PCT Application Number:PCT/JP2016/063139
PCT Publication Date:March 11, 2016PCT Publication Number: WO2016/175224

International Family Members for US Patent 10,392,406

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3428170 ⤷  Get Started Free LUC00198 Luxembourg ⤷  Get Started Free
European Patent Office 3428170 ⤷  Get Started Free C20210003 00390 Estonia ⤷  Get Started Free
European Patent Office 4219508 ⤷  Get Started Free 122024000036 Germany ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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