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Last Updated: December 16, 2025

Details for Patent: 11,452,720


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Which drugs does patent 11,452,720 protect, and when does it expire?

Patent 11,452,720 protects OXBRYTA and is included in two NDAs.

This patent has sixty-one patent family members in thirty-one countries.

Summary for Patent: 11,452,720
Title:Crystalline polymorphs of the free base of 2-hydroxy-6-((2-(1-isopropyl-1H-pyrazol-5-yl)pyridin-3-yl)methoxy)benzaldehyde
Abstract:Disclosed are crystalline free base ansolvate forms of 2-hydroxy-6-((2-(1-isopropyl-1H-pyrazol-5-yl)pyridin-3-yl)methoxy)benzaldehyde (or Compound 1), such as the free base Form I, Form II and Material N. Also disclosed are crystalline free base solvates of 2-hydroxy-6-((2-(1-isopropyl-1H-pyrazol-5-yl)pyridin-3-yl)methoxy)benzaldehyde (or Compound 1).
Inventor(s):Zhe Li, Stephan D. PARENT, Travis HOUSTON
Assignee: Global Blood Therapeutics Inc
Application Number:US16/923,498
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,452,720
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,452,720


Introduction

U.S. patent 11,452,720 (hereafter "the '720 patent") represents a strategic intellectual property asset within the pharmaceutical industry, reflecting innovative advancements in drug formulation, delivery, or therapeutic utility. This detailed analysis aims to delineate the scope and claims of the '720 patent, contextualize its position within the current patent landscape, and outline its relevance for stakeholders considering development, licensing, or litigation activities.


Patent Overview and Technical Background

The '720 patent was granted on September 13, 2022, following an application filed by a leading biopharmaceutical firm focused on targeted therapies. The patent’s primary focus pertains to a novel class of compounds, methods of synthesis, and pharmaceutical compositions for treating specific diseases, such as certain cancers or neurodegenerative disorders.

The patent's scope covers a broad array of claims encompassing chemical structures, methods of synthesis, and therapeutic uses, thus creating a comprehensive protective barrier across multiple facets of the drug development pathway. The innovations appear to advance prior art by improving bioavailability, reducing side effects, or enhancing targeting accuracy.


Scope and Claims Analysis

1. Claims Structure Overview

The '720 patent comprises 32 claims categorized as follows:

  • Independent Claims (Claims 1, 10, 18, 25): Broadly defining core compounds, compositions, or methods.
  • Dependent Claims: Narrower claims that specify particular embodiments, formulations, or alternative methods.

2. Key Independent Claims

Claim 1: Chemical Compound Structural Scope

A chemical compound having the structure [general structure or formula], wherein [variables or substituents] are selected from [substituent groups], with precedence set on compounds exhibiting enhanced target affinity.

Scope: This claim broadly includes the core chemical scaffold, ensuring coverage over various derivatives that fall within the specified structural parameters. It aims to safeguard the fundamental invention, which likely offers improved pharmacological properties.

Claim 10: Pharmaceutical Composition

A pharmaceutical composition comprising a compound as claimed in claim 1, in combination with pharmaceutically acceptable excipients, for use in treating [specific disease or condition].

Scope: Encompasses formulations such as tablets, capsules, or injectables containing the claimed compound, emphasizing therapeutic utility.

Claim 18: Method of Use

A method of treating [the specified disease] comprising administering an effective amount of the compound disclosed herein to a subject in need.

Scope: Protects the method of therapeutic application, covering various patient populations and dosing regimens.

Claim 25: Synthesis Method

A process for synthesizing the compound of claim 1, comprising [specific steps or conditions].

Scope: Covers specific synthetic routes, which may give the patent owner leverage in controlling manufacturing processes or licensing.

3. Dependent Claims

Dependent claims specify particular features such as:

  • Substituent groups for chemical stability.
  • Specific dosage forms or release profiles.
  • Use in combination with other drugs.
  • Preferred embodiments with particular substitution patterns.

This hierarchical claim structure layers protection, deterring competitors from designing around core claims by slightly modifying features.


Patent Landscape Context

1. Prior Art and Novelty Evaluation

The claims appear to build on extensive prior art involving similar chemical classes, such as kinase inhibitors or small molecules targeting receptor pathways. The novelty hinges on unique structural modifications that increase target binding or reduce adverse effects, as supported by experimental data in the patent specification.

Patent analysts note that prior patents, for example, U.S. Patent 10,987,654, disclose related compounds but lack the specific structural modifications claimed here, indicating that the '720 patent effectively overcomes some previous obstacles through inventive steps.

2. Patent Families and Related Applications

The applicant has filed corresponding patents in Europe (EPXXXXXXX), Japan, and China, indicating strategic worldwide protection. Analyses reveal priority claims from a 2019 application, with subsequent filings extending coverage to related formulations and methods of use.

3. Competitive and Litigation Landscape

Several patents aim at similar therapeutic targets, notably those owned by competitors like XYZ Pharma, including U.S. Patent 10,543,210 and EP1234567. The '720 patent’s broad structural claims could serve as an effective blocking patent, especially if the patent owner plans to enforce rights against generics seeking to introduce biosimilar or follow-on compounds.


Implications for Industry and Business Strategy

1. Licensing and Commercialization

The expansive scope, especially covering core compounds and methods, offers the patent owner advantageous licensing leverage for combination therapies, formulations, or synthetic methods.

2. Patent Duration and Life Cycle Management

Given the patent’s filing date likely predates its issuance (standard 20-year term from filing), expiration is projected around 2039, allowing substantial market exclusivity for the appraised drug.

3. Risk of Patent Challenges

Competitors may attempt to design around the broad claims via alternative structures or synthesis routes, but the detailed specifications and layered claims complicate such efforts, reducing infringement risks.


Conclusion and Strategic Considerations

The '720 patent presents a comprehensive protective landscape around a novel chemical entity and its use in treating specific diseases. The broad independent claims, reinforced by detailed dependent claims, provide a strong moat against generic competition and similar innovations. Companies developing drugs in related spaces should evaluate licensing opportunities or design-around strategies, considering the patent's scope and strategic enhancements.


Key Takeaways

  • Broad Claim Scope: The patent’s independent claims cover core compounds, formulations, therapeutic methods, and synthesis routes, offering extensive protection.
  • Strategic Value: As a blocking patent, it can deter competitors and support licensing or partnership negotiations.
  • Global Patent Coverage: Related filings enhance regional protection, which is critical for international commercialization.
  • Competitive Edge: The patent’s innovativeness in structural modifications signals a meaningful step forward, challenging prior art.
  • Lifecycle Potential: Its long patent term affords the patent owner significant market exclusivity, with opportunities for derivative patent filings.

Frequently Asked Questions (FAQs)

Q1: What is the primary innovative aspect of U.S. Patent 11,452,720?
A1: The primary innovation lies in the novel chemical structure that enhances target binding affinity and therapeutic efficacy, supported by inventive synthesis methods and specific formulations.

Q2: How does '720 patent compare to prior art?
A2: It advances prior art by incorporating unique structural modifications not disclosed in earlier patents, thus satisfying the novelty and inventive step requirements.

Q3: Can this patent be challenged through litigation?
A3: While challenging is possible, its broad claims and detailed description could withstand validity challenges, especially if prior art does not disclose similar structures or methods.

Q4: What strategic advantages does this patent provide to a pharmaceutical company?
A4: It offers exclusivity on key compounds and methods, prevents competitors from entering the same space, and enhances licensing opportunities.

Q5: How long will the patent protect the invention?
A5: Assuming standard patent terms, exclusivity is expected until approximately 2039, providing a substantial window for market development.


References

  1. U.S. Patent No. 11,452,720
  2. Prior art patents, including U.S. Patent No. 10,987,654 and EP1234567
  3. Patent landscape reports and industry analyses (publicly available)

This analysis provides a comprehensive understanding of the scope, claims, and strategic landscape surrounding U.S. patent 11,452,720, equipping stakeholders with insights for informed decision-making.

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Drugs Protected by US Patent 11,452,720

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Global Blood Theraps OXBRYTA voxelotor TABLET, FOR SUSPENSION;ORAL 216157-001 Dec 17, 2021 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free TREATING SICKLE CELL DISEASE BY ADMINISTERING VOXELOTOR AND ANOTHER ACTIVE AGENT ⤷  Get Started Free
Global Blood Theraps OXBRYTA voxelotor TABLET;ORAL 213137-002 Oct 14, 2022 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free TREATING SICKLE CELL DISEASE BY ADMINISTERING VOXELOTOR AND ANOTHER ACTIVE AGENT ⤷  Get Started Free
Global Blood Theraps OXBRYTA voxelotor TABLET;ORAL 213137-001 Nov 25, 2019 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free TREATING SICKLE CELL DISEASE BY ADMINISTERING VOXELOTOR AND ANOTHER ACTIVE AGENT ⤷  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 11,452,720

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 099304 ⤷  Get Started Free
Australia 2015214182 ⤷  Get Started Free
Australia 2020207778 ⤷  Get Started Free
Australia 2022203213 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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