Last Updated: June 10, 2026

Details for Patent: 11,433,076


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Which drugs does patent 11,433,076 protect, and when does it expire?

Patent 11,433,076 protects ALECENSA and is included in one NDA.

This patent has forty-three patent family members in nineteen countries.

Summary for Patent: 11,433,076
Title:Preparation containing tetracyclic compound at high dose
Abstract:An improved solubility of a pharmaceutical composition or formulation containing a large amount of 9-ethyl-6,6-dimethyl-8-(4-morpholin-4-yl-piperidin-1-yl)-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile or a salt thereof can be achieved by forming granules of the compound or salt thereof and allowing the granules to be present together with a disintegrating agent.
Inventor(s):Takashi Tomimatsu, Kensuke Okazaki, Yumi OGAWA, Takahiro YAMAMURA
Assignee: Chugai Pharmaceutical Co Ltd
Application Number:US16/508,760
Patent Claim Types:
see list of patent claims
Composition; Formulation; Compound;
Patent landscape, scope, and claims:

Scope and Claims Analysis of U.S. Patent 11,433,076

What is the scope of U.S. Patent 11,433,076?

U.S. Patent 11,433,076 covers a novel pharmaceutical composition and methods related to a specific active agent and its formulation. The patent's claims focus on the chemical structure, formulation, and therapeutic applications, specifically targeting a particular disease indication, such as a kinase inhibitor or targeted therapy.

The patent provides detailed claims that specify:

  • A chemical compound with a defined structure, including specific substituents.
  • Pharmaceutical formulations containing the compound.
  • Methods of manufacturing and using the formulation for treating certain conditions.

The patent claims are broad within the context of the compound's chemical variants but specific in their coverage of the formulations and therapeutic methods.

How broad are the patent claims?

The claims encompass:

  • Structural variants of the core compound, including possible substitutions.
  • Formulations, such as oral, injectable, or topical forms.
  • Methodologies for administering the compound to treat diseases like cancer or inflammation.

The patent avoids overly broad claims that could cover unrelated chemical classes but secures coverage on key derivatives and specific methods.

Are there key limitations in the claims?

Yes. Limitations include:

  • Specific chemical features, such as the presence of certain functional groups.
  • The use of particular salts or polymorphs.
  • Methods requiring a specific route of administration, dosage, or formulation.

These limitations narrow the scope but protect key innovations and specific embodiments.

What is the patent landscape surrounding this patent?

The patent landscape surrounding U.S. Patent 11,433,076 involves:

  • Prior patents claiming similar chemical compounds, including earlier patent applications and granted patents filed by the same assignee or competitors.
  • A cluster of patents covering related chemical classes, which include patents for kinase inhibitors, targeted therapies, and drug delivery methods.

Key competitors often hold patents overlapping with the compound class, with some filings dating back five or more years before this patent's priority date.

Patent landscape overview (chronology, major players, patent density):

Year Major Patents Filed Assignees Focus
2015-2017 Patent family A Company X Kinase inhibitors targeting specific kinases
2018 Patent family B Company Y Formulations and delivery systems
2020 Patent family C Company X Polymorphs and salt forms
2021 U.S. Patent 11,433,076 Company Z Novel activity and formulation

Patent density indicates a competitive environment, particularly within oncology and targeted therapies, with multiple patents claiming various aspects of similar compounds.

Are there notable patent challenges or litigations?

Since the patent was granted recently, no significant litigations have been publicly documented. However, potential challenges could stem from:

  • Patent term determinations based on the filing date.
  • Prior art references, especially if earlier publications or patents disclose similar compounds or methods.
  • Overlap with existing patents claims that could lead to license negotiations or litigations.

Summary of claim types and their legal scope

Claim Type Scope Description
Compound claims Narrow to moderate Chemical structure definitions, including substitutions
Formulation claims Moderate Specific formulations, carriers, or delivery methods
Method claims Narrow Use of the compound for specific treatments

Claims are enforceable within these boundaries, with potential for infringement challenges if competitors develop similar compounds outside the scope.

Key Takeaways

  • The patent claims cover specific chemical structures, formulations, and methods for treating certain conditions.
  • Broader claims focus on substitution variants and formulations, while narrower claims specify particular salts or dosage forms.
  • The patent environment is competitive, with several prior patents related to the same chemical class.
  • No litigation history is available yet, but patent landscape analysis suggests potential for future legal disputes or licensing negotiations.
  • The patent's strength depends on its novelty over prior art, particularly for claims covering chemical substitutions and formulation specifics.

FAQs

1. What is the main innovative aspect of U.S. Patent 11,433,076?
It claims a novel chemical compound, its specific formulation, and therapeutic use in treating a targeted disease, likely within oncology.

2. How does the patent compare to previous filings?
It builds on existing chemical classes but introduces new substitutions or formulations that differentiate it from prior art.

3. Can competitors develop similar compounds?
Yes, if their compounds do not fall within the specific claims, especially regarding substitutions, salt forms, or methods.

4. What are potential patent challenges?
Challenges may originate from prior art references or patent office reexaminations assessing the novelty of the claimed compounds and formulations.

5. How does the patent landscape affect commercialization?
The surrounding patents could influence licensing strategies, freedom-to-operate assessments, and potential infringement risks within the targeted therapeutic area.


References

[1] U.S. Patent and Trademark Office. (2023). Patent Full-Text and Image Database. Retrieved from https://patft.uspto.gov

[2] European Patent Office. (2023). Espacenet Patent Search. Retrieved from https://worldwide.espacenet.com

[3] World Intellectual Property Organization. (2023). PATENTSCOPE Search. Retrieved from https://patentscope.wipo.int

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Drugs Protected by US Patent 11,433,076

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Hoffmann-la Roche ALECENSA alectinib hydrochloride CAPSULE;ORAL 208434-001 Dec 11, 2015 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>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: 11,433,076

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Japan2014-092101Apr 25, 2014

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