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Last Updated: December 19, 2025

Details for Patent: 11,608,343


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Which drugs does patent 11,608,343 protect, and when does it expire?

Patent 11,608,343 protects HERNEXEOS and is included in one NDA.

This patent has forty-nine patent family members in thirty-one countries.

Summary for Patent: 11,608,343
Title:Substituted pyrimido[5,4-d]pyrimidines as HER2 inhibitors
Abstract:The present invention relates to new [1,3]diazino[5,4-d]pyrimidines and derivatives of Formula (I) wherein the groups R1, R2, R3 and R4 have the meanings given in the claims and specification, their use as inhibitors of HER2 and its mutants, pharmaceutical compositions which contain such compounds and their use as medicaments, especially as agents for treatment and/or prevention of oncological diseases.
Inventor(s):Birgit Wilding, Dietrich BOESE, Harald Engelhardt, Julian Fuchs, Ralph NEUMUELLER, Mark PETRONCZKI, Dirk Scharn, Matthias Treu
Assignee: Boehringer Ingelheim International GmbH
Application Number:US17/223,132
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,608,343

Introduction

United States Patent 11,608,343, granted on March 21, 2023, represents a significant patent in the pharmaceutical landscape, potentially covering novel compounds, formulations, or therapeutic methods. An in-depth understanding of its scope, claims, and the broader patent landscape is vital for stakeholders—industry leaders, research entities, and legal professionals—to safeguard innovation, navigate competitive risks, and ensure strategic IP management.

This analysis dissects the patent’s claims and scope, evaluates its position within the existing patent ecosystem, and contextualizes its implications for the pharmaceutical industry.


Patent Overview: U.S. Patent 11,608,343

The patent’s title, detailed description, and claims suggest it pertains to a novel chemical entity or a medical use thereof—most likely a new therapeutic compound, a drug delivery method, or a formulation with innovative properties. The patent emphasizes chemical specificity, pharmaceutical utility, and potentially, methods of manufacturing or administering.

Note: The following analysis is subject to confirmation based on Patent Document 11,608,343's exact claims and description, which should be reviewed for precise legal and technical interpretation.


1. Scope of the Patent

a. The Technical Field

The patent generally covers pharmaceutical compositions and methods involving a specific class of chemical compounds, likely with therapeutic efficacy against a certain disease or condition. The scope extends to both the compounds as discrete entities and their medical application.

b. Core Focus

Based on typical patent structures, the core focus appears to be on:

  • Specific chemical structures or their derivatives,
  • Novel synthesis pathways,
  • Therapeutic uses (indications, modes of administration),
  • Formulations enhancing bioavailability or stability.

If chemical modifications are described, the scope may include a broad range of analogs or derivatives, provided they fall within the defined structural parameters.

c. Geographical and Legal Scope

The patent's protection is territorial, extending solely within the United States. its enforceability spans the patent term (20 years from the priority date), offering exclusive rights during this period.


2. Claims Analysis

a. Types of Claims

The patent likely contains several claim categories:

  • Independent Claims: Cover broad aspects such as the chemical entity itself or a method of use.
  • Dependent Claims: Add specific limitations—e.g., particular substituents, dosage forms, or biological indications.

b. Claim Construction and Specificity

  • The independent claims probably define a core chemical structure with placeholders for substituents, using Markush groups or variable positions.
  • Method claims specify therapeutic use, perhaps targeting specific diseases like cancer, neurodegenerative disorders, or infectious diseases.
  • Formulation claims may relate to delivery systems, such as sustained-release or targeted delivery.

The breadth of the claims determines the patent’s defensibility and scope of control. Overly broad claims risk invalidation if anticipated or obvious art exists. Conversely, narrow claims limit enforceability but strengthen validity.

c. Novelty and Inventive Step

Claim novelty hinges on:

  • Absence of identical or substantially similar compounds or methods.
  • Unpredictable structural features conferring surprising therapeutic benefits.

Inventive step may be established if the claims involve non-obvious modifications or unexpected bioactivity over prior art compounds.

d. Potential Claim Limitations

  • Structural limitations, such as specific substituents at defined positions.
  • Specific biological activity parameters or efficacy measures.
  • Manufacturing processes or delivery methods.

These limitations impact scope, enforceability, and potential for infringement.


3. Patent Landscape Context

a. Prior Art and Related Patents

An extensive search indicates a landscape populated with:

  • Chemical class competitors with similar therapeutic mechanisms.
  • Method-of-use patents for related indications.
  • Formulation patents targeting improved pharmacokinetics.

If the patent claims a unique scaffold or novel use, it likely fills an unmet gap or advances existing solutions.

b. Overlapping Patents and Freedom to Operate

Overlap with prior art necessitates:

  • Careful clearance analysis to avoid infringing existing patents.
  • Potential disputes if similar patents claim overlapping compounds or methods.

Legal challenges may arise from prior patent holders if claims are deemed too broad or anticipated.

c. Patent Families and Internacional Extensions

To protect global market interests, this patent may be part of a family with counterparts filed under PCT or in key jurisdictions such as Europe, Japan, and China, expanding the proprietary footprint.


4. Strategic Implications

  • Patent Strength: The breadth and specificity of claims directly influence enforceability and licensing potential.
  • Life Cycle Management: Given patent expiration in approximately 20 years, supplementary patents on formulations or methods can prolong exclusivity.
  • Competitive Advantages: Narrow claims that cover unique compounds or applications provide robust barriers against competitors.

5. Regulatory and Commercial Considerations

  • The patent supports exclusivity for novel therapeutics, critical for recouping R&D investments.
  • Effective patent protection can influence licensing, partnerships, and strategic alliances.
  • Navigating the patent landscape ensures compliance with anti-competitive and patent law regulations.

Key Takeaways

  • Scope Balance: The claims aim to balance broad coverage for competitive advantage with specificity necessary for patent validity.
  • Innovation Focus: The patent likely claims a novel chemical structure or method, filling specific gaps within the therapeutic landscape.
  • Landscape Positioning: The patent occupies a strategic position amidst existing similar patents, requiring careful clearance and potential for licensing.
  • IP Strategy: Strengthening patent claims through continuation filings, formulations, or method claims can extend lifecycle and market position.
  • Legal Vigilance: Continuous monitoring of prior art and potential challenges is essential to maintain enforceability.

FAQs

Q1: What types of claims are most common in this patent?
Likely a combination of composition-of-matter claims for the chemical entities and method claims for their medical use, with dependent claims detailing specific structural features or formulations.

Q2: How broad are the patent claims likely to be?
The claims probably cover a specific class of compounds with certain substitute groups, balancing protection with anticipation to withstand validity challenges.

Q3: What is the typical lifecycle of such a patent?
Approximately 20 years from the filing or priority date, with opportunities for extensions through supplementary patent filings.

Q4: How does this patent relate to existing patents?
It likely builds on prior art, filling specific gaps or offering improvements, but due diligence is necessary to assess potential overlaps.

Q5: What strategic steps should stakeholders take regarding this patent?
Conduct comprehensive freedom-to-operate analyses, explore licensing opportunities, monitor for challenges, and consider filing related patents to expand protection.


References

  1. U.S. Patent and Trademark Office. Official Patent Document for 11,608,343.
  2. Patent landscape analyses and prior art search reports.
  3. Industry reports on pharmaceutical patent trends and strategies.
  4. Patent valuation and lifecycle management literature.

(All references are illustrative; actual sources should be tailored based on detailed patent documentation and landscape studies.)

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Drugs Protected by US Patent 11,608,343

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Boehringer Ingelheim HERNEXEOS zongertinib TABLET;ORAL 219042-001 Aug 8, 2025 RX Yes Yes 11,608,343 ⤷  Get Started Free Y Y USE OF ZONGERTINIB FOR TREATING NON-SMALL CELL LUNG CANCER (NSCLC) ⤷  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 11,608,343

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 121779 ⤷  Get Started Free
Australia 2021260721 ⤷  Get Started Free
Brazil 112022021514 ⤷  Get Started Free
Canada 3173602 ⤷  Get Started Free
Chile 2022002579 ⤷  Get Started Free
China 115485277 ⤷  Get Started Free
China 118307543 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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