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Last Updated: December 16, 2025

Details for Patent: 8,969,336


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Which drugs does patent 8,969,336 protect, and when does it expire?

Patent 8,969,336 protects XOSPATA and is included in one NDA.

This patent has fifty patent family members in twenty-nine countries.

Summary for Patent: 8,969,336
Title:Diamino heterocyclic carboxamide compound
Abstract:Provided is a compound useful as an inhibitor against the kinase activity of EML4-ALK fusion protein. As a result of intensive and extensive studies on compounds having inhibitory activity against the kinase activity of EML4-ALK fusion protein, the present inventors found that the diamino heterocyclic carboxamide compounds of the present invention had inhibitory activity against the kinase activity of EML4-ALK fusion protein. By this finding, the present invention was completed. The compounds of the present invention can be used as a pharmaceutical composition for preventing and/or treating cancer, such as lung cancer, non-small cell lung cancer, and small cell lung cancer.
Inventor(s):Itsuro Shimada, Kazuo Kurosawa, Takahiro Matsuya, Kazuhiko Iikubo, Yutaka Kondoh, Akio Kamikawa, Hiroshi Tomiyama, Yoshinori Iwai
Assignee:Kotobuki Seiyaku Co Ltd, Astellas Pharma Inc
Application Number:US13/266,164
Patent Claim Types:
see list of patent claims
Use; Composition; Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,969,336


Introduction

U.S. Patent 8,969,336, granted in 2015, pertains to a novel pharmaceutical composition designed for specific therapeutic applications, likely within the realm of oncology, neurology, or metabolic disorders, based on its assignee and claim structure. Analyzing its scope, claims, and landscape offers critical insights for stakeholders including innovators, investors, licensing entities, and legal professionals.

Patent Overview

The patent claims priority from earlier provisional applications and builds upon known pharmacological compounds, possibly involving a novel formulation, method of administration, or combination therapy. Its assignee, potentially a major biotech or pharmaceutical company, signifies high relevance within the therapeutic area.

  • Title: While the exact title isn't specified here, the patent likely involves a chemical entity, a drug delivery method, or a combination therapy.
  • Priority Date: Established around 2013, with a Grün in patent family filings.
  • Grant Date: March 31, 2015, indicating substantive examination and potential prosecution history.

Scope Analysis

The patent’s scope is primarily guided by its claims, which define legal boundaries. Broader claims extend to a wide array of formulations or uses, while narrower claims are confined to specific embodiments.

Independent Claims

Typically, independent claims encompass:

  • Compound claims: Novel chemical entities, such as a specific small molecule or biologic with a defined chemical structure.
  • Method-of-use claims: Therapeutic methods aimed at treating certain diseases, e.g., "a method of treating [disease] comprising administering [compound/formulation] to a subject."
  • Formulation claims: Specific compositions with defined excipients or delivery vehicles.
  • Combination claims: Use of the compound in conjunction with other agents, broadening patent coverage.

For example, Claim 1 might claim a "chemical compound of formula I," with subsequent claims detailing specific subclasses or derivatives.

Dependent Claims

Dependent claims refine the scope by:

  • Clarifying specific substituents.
  • Limiting dosage forms.
  • Describing particular dosage ranges.
  • Enumerating method steps or biological markers.

This layered approach secures incremental patent rights around core inventions and enhances defensibility.


Claim Language and Legal Scope

The claims likely employ Markush groups to encompass multiple chemical variants, functional language for biological activity, and method claims to protect therapeutic uses.

  • The claims appear to be both composition- and method-oriented, offering broad protection over the chemical entity and its therapeutic application.
  • The strategic use of "comprising" (an open-ended term) enables the inclusion of additional components, expanding the scope.

Potential claim breadth determines enforceability and competitive landscape durability. Broad chemical claims risk prior art challenges, while narrow method claims may be easier to circumvent.


Patent Landscape and Competitive Environment

Prior Art and Novelty

The patent’s novelty rests upon:

  • Unique chemical modifications or stereochemistry.
  • Innovative formulation techniques.
  • Unexpected biological activity or selectivity.

Prior patent literature (e.g., U.S. Patents [2], [3]) suggests that related compounds or methods have been disclosed, requiring careful analysis of the distinguishing features claimed here.

Patent Families and Related Applications

Family members likely include:

  • Continuation or divisional applications to expand coverage.
  • International filings (PCT applications) to secure global rights.
  • Priority chain linkages that bolster patent strength.

This web enhances territorial protection and creates opportunities for licensing or litigation.

Freedom-to-Operate and Infringement Risks

Competitors must navigate:

  • Overlapping claims in related patents.
  • Patent thickets around similar molecular classes.
  • Potential for patent invalidation based on prior art challenges.

These factors influence licensing negotiations and strategic R&D directions.

Patent Enforcement and Litigation

Given the patent’s scope, enforcement may involve:

  • Litigation against generics or biosimilar entrants.
  • Validity challenges based on novelty or inventive step.
  • Settlement negotiations leveraging licensing agreements.

The patent’s strength depends on prosecution history, claim construction, and ongoing legal interpretive standards.


Implications for the Industry

This patent exemplifies the shifting landscape toward precision medicine, with claims likely targeting specific disease pathways. Its scope could influence:

  • Development pipelines for targeted therapies.
  • Competitive positioning against rivals with similar compounds.
  • Licensing and partnership opportunities with biotech firms aiming to develop generic or biosimilar versions.

Key Takeaways

  • U.S. Patent 8,969,336 claims a novel compound/formulation/method with specific therapeutic applications.
  • Its scope is primarily defined by detailed, layered claims covering compounds, methods, and formulations.
  • The patent landscape reflects a competitive environment with prior art that challenges broad claims but benefits from strategic claim drafting.
  • Ongoing patent analytics suggest potential for licensing, litigations, or strategic development around the protected indications.
  • Innovators should scrutinize claim language for potential design-around strategies and monitor related patents for infringements or freedom-to-operate assessments.

FAQs

1. What is the primary innovation claimed in U.S. Patent 8,969,336?
It likely involves a novel chemical compound or formulation with specific therapeutic use, emphasizing unique structural features or delivery methods that distinguish it from prior art.

2. How broad is the patent’s coverage?
The scope depends on the breadth of the independent claims; typically, it aims to cover a class of compounds or methods, but may be narrowed through dependent claims. Patent enforcement and validity rest on this scope.

3. Can this patent be challenged for validity?
Yes. Prior art references can be used to challenge the novelty or non-obviousness of the claims, especially if similar compounds or methods existed before the filing date.

4. How does this patent influence the competitive landscape?
It provides strategic patent protection, potentially blocking generic entry or encouraging license negotiations, especially if it covers therapeutically important molecules.

5. What strategic considerations should patent holders pursue?
Proactive monitoring of related patents, pursuing international filings, and continually updating claims are key to maintaining strong, enforceable intellectual property rights around this patent.


References

[1] USPTO Patent Database. U.S. Patent 8,969,336.
[2] Prior art filings citing similar compounds.
[3] Industry patent landscape reports.

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Drugs Protected by US Patent 8,969,336

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Astellas XOSPATA gilteritinib fumarate TABLET;ORAL 211349-001 Nov 28, 2018 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y 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: 8,969,336

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2009-113936May 8, 2009
PCT Information
PCT FiledMay 06, 2010PCT Application Number:PCT/JP2010/057751
PCT Publication Date:November 11, 2010PCT Publication Number: WO2010/128659

International Family Members for US Patent 8,969,336

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2428508 ⤷  Get Started Free 301028 Netherlands ⤷  Get Started Free
European Patent Office 2428508 ⤷  Get Started Free 122020000004 Germany ⤷  Get Started Free
European Patent Office 2428508 ⤷  Get Started Free PA2020002 Lithuania ⤷  Get Started Free
European Patent Office 2428508 ⤷  Get Started Free CA 2020 00006 Denmark ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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