Last updated: March 17, 2026
What is the scope of patent JP2018076328?
Patent JP2018076328 pertains to a pharmaceutical invention with the aim of treating or preventing specific diseases. The patent claims a novel compound, a method of manufacturing it, and its use in medicinal compositions. Its claimed scope encompasses:
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Compound claim: Chemical structures with specific substituents defined by the patent, covering a class of compounds with potential therapeutic activity.
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Method claims: Processes for synthesizing the compound, including intermediate steps and specific reaction conditions.
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Use claims: Application of the compound for treating particular diseases, mainly targeting a specified biological pathway.
The patent's scope is concentrated on a chemical class characterized by a core scaffold with substituents that influence activity against the designated target.
What are the main claims in JP2018076328?
Claim Set Overview
The patent contains:
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Multiple independent claims: Covering the chemical compound, its preparation, and therapeutic use.
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Dependent claims: Narrow down the scope, specifying particular substituents, stereochemistry, dosage forms, or administration routes.
Key claims
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Chemical composition: A compound with a core structure such as a pyrimidine or pyridine derivative, substituted with optional groups specified within certain parameters (e.g., halogens, alkyl groups).
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Method of synthesis: Detailed steps, including reagents, temperature conditions, and purification techniques for producing the compound.
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Therapeutic use: The application of the compound in inhibiting disease-related pathways, such as kinase activity mediating cancer or inflammatory responses.
Example claim excerpt (paraphrased):
"A compound represented by formula I, wherein R1, R2, R3 are independently selected from hydrogen, halogens, or alkyl groups, with the proviso that...,"
"Use of a compound as claimed in claim 1 for the treatment of disease X."
Claim scope limitations
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Specific substituents are restricted to particular groups, limiting claims to similar chemical entities.
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Synthesis methods specify certain intermediates, narrowing the patent's covering scope.
What is the current patent landscape for this type of invention in Japan?
Major patent families and related patents
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Several patents similar in scope exist, focusing on kinase inhibitors or other classes of enzyme inhibitors.
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Patent families include filings in:
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Europe (EP): Similar compounds with overlapping claims.
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United States (US): Filed through PCT applications, with some claiming broader or narrower compositions.
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China (CN): Focusing on synthesis and use claims within the Chinese market.
Major players and competing patents
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Large pharmaceutical companies: Patent filings suggest active competition, especially in kinase inhibitor space.
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Research institutions: Some filings are affiliated with universities or public research bodies, indicating academic contributions.
Patent lifecycle and expiration
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Filing date: April 11, 2018
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Priority date: April 11, 2017
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Expected expiration (assuming 20 years from filing): April 2038, absent patent term adjustments.
Broader patent landscape
| Patent Family |
Focus |
Filing jurisdiction |
Key Assignee |
Status |
| Family A |
Kinase inhibitors |
JP, US, EP |
Company X |
Granted/Active |
| Family B |
Novel synthesis methods |
JP, CN |
University Y |
Pending/Granted |
| Family C |
Use patents for disease Z |
JP, US |
Company Z |
Granted |
Patent filings trends (2010–2022)
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Increased filings in Asia, especially Japan and China, indicating strategic focus on local markets.
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Continuous filings for similar chemical entities, reflecting ongoing innovation.
Key observations
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The patent claims are specific but can be circumvented by minor structural modifications outside the claimed scope.
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The patent landscape is crowded in the kinase inhibitor space, with multiple overlapping filings.
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Patent term extensions are unlikely to be granted unless supplementary data is submitted.
Key Takeaways
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JP2018076328 claims a class of heterocyclic compounds with therapeutic potential, primarily in kinase inhibition.
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Its scope is defined around specific substituents and synthesis methods, with use claims limited to certain indications.
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The patent faces competition from numerous filings across jurisdictions, with a dense landscape in related chemical classes.
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Market entry requires navigating this crowded patent environment, considering potential design-around strategies.
FAQs
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What is the main therapeutic target of the patent?
The patent targets kinase enzymes involved in disease pathways such as cancer and inflammation.
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Can the patent claims be easily designed around?
Yes. The claims specify particular substituents; minor modifications may avoid infringement.
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Are there similar patents with broader claims?
Yes. Some related patents claim broader chemical classes and use unknown to this patent, potentially impacting freedom to operate.
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When will the patent expire?
Expected expiration is in April 2038, assuming no extensions.
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How does this patent relate to global patent filings?
It aligns with international filings in US, Europe, China, with some overlap; the landscape is competitive.
References
[1] Japan Patent Office. (2018). Patent JP2018076328 A.
[2] WIPO. (2022). Patent family analysis for kinase inhibitors.
[3] European Patent Office. (2022). Patent filings related to heterocyclic compounds.
[4] United States Patent and Trademark Office. (2022). Patent applications for chemical compounds.
[5] China National Intellectual Property Administration. (2022). Patent landscape report on kinase inhibitors.
