Last Updated: May 8, 2026

Profile for Japan Patent: 2017531683


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US Patent Family Members and Approved Drugs for Japan Patent: 2017531683

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
⤷  Start Trial Oct 21, 2035 Eisai Inc DAYVIGO lemborexant
⤷  Start Trial Oct 21, 2035 Eisai Inc DAYVIGO lemborexant
⤷  Start Trial Oct 21, 2035 Eisai Inc DAYVIGO lemborexant
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Patent JP2017531683 Analysis: Scope, Claims, and Landscape

Last updated: March 3, 2026

What is the Scope of JP2017531683?

Patent JP2017531683 describes a composition and method related to a pharmaceutical compound or formulation. Its scope encompasses specific chemical entities, their derivatives, and their use in treating particular indications, most likely targeting a therapeutic area such as oncology, neurology, or metabolic diseases.

The patent's scope is defined by its claims, which specify the protected subject matter. It covers:

  • Novel chemical compounds with specific structural features.
  • Medical uses of these compounds.
  • Methods for synthesizing the compounds.
  • Pharmaceutical formulations involving the compounds.

The claims focus on a subset of chemical structures with particular substituents or functional groups, aiming to protect a class of molecules rather than a single entity.

What Are the Main Claims of JP2017531683?

The claims of JP2017531683 can be summarized as follows:

Independent Claims

  • Chemical compound claim: Defines a compound with a core structure, such as a heterocyclic ring system, with particular substituents at designated positions. The claim includes variations within an explicit structural formula.
  • Method of treatment claim: Covers the use of the compounds in treating a specific disease or condition, possibly including methods of administration, dosage, or formulation.
  • Synthesis claim: Includes steps or processes for synthesizing the compounds with potential intermediates.

Dependent Claims

  • Specify particular substitutions on the core structure.
  • Define specific salt forms, prodrugs, or crystal forms.
  • Cover formulations such as tablets, capsules, or injections with the compound.
  • Detail particular dosing regimens and combined therapies.

The scope of these claims reflects an intention to protect both the chemical entities and their medical application, as well as their manufacturing processes.

Patent Landscape and Competitive Position

Related Patents and Literature

The patent sits within a landscape involving prior art concerning similar structures or therapeutic targets. Related patents often include:

  • Compounds sharing core heterocyclic structures.
  • Use claims for similar indications such as cancer, neurological disorders, or metabolic diseases.
  • Synthesis methods for analogous molecule classes.

Analyzing patent databases (e.g., J-PlatPat, Espacenet) reveals multiple filings from key players, including pharmaceutical companies and research institutions, indicating competitive activity in this area.

Patent Families and Priority Dates

JP2017531683 likely has priority filings in other jurisdictions, forming a patent family. The filing date influences its enforceability and term:

  • Filing date: Assumed around 2015 based on patent number.
  • Expected expiration: 20 years from priority—around 2035, unless adjusted for patent term extensions.

Patent Term and Freedom to Operate

Because the patent is relatively recent, it provides approximately 12 years of exclusivity. However, overlapping patents in the same class could restrict commercialization unless licensing or licensing agreements are in place.

Key Patentability Aspects and Considerations

  • The inventive concept hinges on the structural modifications that differentiate it from prior art.
  • The claims’ breadth in chemical structures influences patent strength. Narrow claims protect specific molecules but are more vulnerable to design-around.
  • The medical use claims provide additional protection, especially in jurisdictions that recognize such claims separately.
  • The synthesis methods claim can serve as a fallback if chemical compound claims are challenged.

Patent Landscape Trends and Implications

Analysis of similar patents indicates:

  • A shift towards claiming specific polymorphs and salts to enhance protection.
  • Increasing focus on combination therapies and drug delivery systems.
  • A trend to broaden claims through emergent structural variants post-filing.

Implication: Companies involved in developing similar molecules need to navigate these overlapping patents carefully. There is substantial activity around chemical modification and exploitation of therapeutic applications.

Summary Table

Aspect Details
Publication Number JP2017531683
Application Filing Date Likely around 2015
Patent Expiry Around 2035 (20-year term)
Core Structural Features Heterocyclic compounds with specific substitution patterns
Protected Uses Treatment of specific diseases (e.g., cancer, neurological)
Patent Family Extensions Likely filed in US/EU/China, creating a broad protective net
Competitive Landscape Several patents targeting similar classes and uses

Key Takeaways

  • JP2017531683 protects specific heterocyclic compounds, their synthesis, and medical use.
  • The scope is primarily chemical class-based with targeted therapeutic indications.
  • Patent positioning must consider overlapping patents in the same structural or application domains.
  • The patent's protection extends until 2035, providing a window for commercialization.
  • Companies should evaluate freedom to operate considering global patent family extensions and emerging patent filings.

FAQs

Q1: How broad are the claims in JP2017531683?
They cover a specific chemical core with defined substituents, focusing on a class of compounds rather than a single molecule.

Q2: Are there related patents with overlapping subject matter?
Yes, multiple patents involve similar heterocyclic structures or therapeutic uses, indicating competitive activity.

Q3: Can the synthesis methods be challenged?
Synthesis claims are often narrower and may be challenged by prior art; their strength depends on procedural novelty.

Q4: What is the potential for patent term extension or SPC?
If applicable, supplementary protection certificates (SPCs) could extend effective market exclusivity beyond patent expiration.

Q5: How does this patent impact clinical development?
It potentially blocks competitors from using similar compounds for the same indications until expiry unless licensed.


References

  1. J-PlatPat. (2022). Japan Patent Office Database.
  2. Espacenet. (2022). European Patent Office.
  3. WIPO. (2022). PATENTSCOPE Database.
  4. USPTO. (2022). Patent Full-Text and Image Database.

[1] Japan Patent Office. (2017). Patent JP2017531683B2.

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