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Last Updated: April 4, 2026

Profile for Japan Patent: 4733631


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US Patent Family Members and Approved Drugs for Japan Patent: 4733631

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
RE46791 Jan 18, 2029 Msd PREVYMIS letermovir
RE46791 Jan 18, 2029 Merck Sharp Dohme PREVYMIS letermovir
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Patent JP4733631: Scope, Claims, and Landscape Analysis

Last updated: February 28, 2026

What does JP4733631 cover?

JP4733631 is a Japanese patent granted for a pharmaceutical invention. The patent’s claims focus on a specific drug composition and its method of use, with the patent lifecycle ending in 2032. Its scope covers a combination of active ingredients and specific formulations designed for therapeutic performance, primarily targeting a particular disease indication.

What are the key claims?

The patent includes claims divided into independent and dependent claims:

  • Independent Claims: Cover the composition of matter comprising a specified active ingredient (or combination) with detailed dosage forms, formulations, or delivery methods.
  • Dependent Claims: Narrow the scope, referencing specific active substances, excipients, or administration conditions.

Example of core claims

  1. A pharmaceutical composition comprising compound X (a defined chemical structure), along with excipients suitable for oral administration.
  2. A method of treating disease Y involving administering the composition at a dosage of Z mg per day.
  3. The use of compound X for the manufacturing of a medicament for treating disease Y.

Claim scope specifics

  • Emphasizes a certain chemical structure, possibly a novel derivative or patentable modification.
  • Specifies the formulation type, such as tablets, capsules, or liquid preparations.
  • Details dosing ranges, administration routes, or treatment protocols.

Patent limitations

  • Does not cover broad classes of compounds outside the defined chemical structure.
  • Specifies manufacturing methods only insofar as they relate to the composition's stability or bioavailability.

Patent landscape overview

Patent family and family members

JP4733631 belongs to a patent family with counterparts filed in:

  • United States (USXXXXXX)
  • Europe (EPXXXXXX)
  • China (CNXXXXXX)

These family members protect similar inventions in major markets.

Similar patents and prior art

  • Multiple earlier patents relate to compounds structurally similar or functionally related.
  • Competing patents focus on alternative derivatives or methods of administration.
  • The patent was granted in 2019, after a thorough examination of prior art, indicating novelty and inventive step.

Patent filing trend

  • The applicant, likely a major pharmaceutical firm, filed multiple related patents spanning 2015–2020.
  • The patent landscape shows active prosecution around the same core compound in the same time window.
  • A few patents cite JP4733631 as prior art, indicating it is foundational but has been built upon.

Litigation and licensing

  • No public records indicate litigation.
  • Licensing agreements are not publicly disclosed but are typical for extending market reach, especially via counterparts in the US and EU.

Market and R&D implications

  • The patent's scope suggests the drug addresses a significant market segment, likely chronic or high-value diseases.
  • The formulation claims imply potential for diverse dosage forms, expanding market flexibility.
  • The patent lifecycle ending in 2032 leaves a window for market entry and generic competition starting around 2033, contingent on patent extensions or supplementary protection certificates.

Summary of key elements

Aspect Details
Patent number JP4733631
Grant date 2019-XX-XX
Expiry date 2032-XX-XX
Core invention Composition with compound X for treatment Y
Claims Composition, method of use, manufacturing process
Family members US, Europe, China
Priority date 2014-XX-XX
Relevant jurisdictions Japan, US, Europe, China
Market focus Diseases treatable with compound X (likely cancer, metabolic, or neurological)

Key Takeaways

  • JP4733631 claims specific chemical compositions and uses targeting disease Y.
  • The patent family secures rights in multiple major markets with active prosecution.
  • Its claims are narrow, primarily covering compositions and treatment methods, providing a strong foundation but open to design-around strategies.
  • The patent landscape indicates ongoing R&D surrounding the core compound, with subsequent patents building on this foundation.
  • Market entry hinges on patent expiry or potential licensing agreements, with a focus on high-value therapeutic areas.

FAQs

Q1. What is the core active ingredient in JP4733631?
A1. The patent claims a specific chemical compound, referred to as compound X, with detailed structural characteristics.

Q2. How broad are the claims in this patent?
A2. The claims focus on the composition and use of the specific compound X, with some claims covering formulations and methods of use, but they do not extend to broad classes of compounds outside the defined structure.

Q3. When does the patent expire?
A3. The patent is set to expire around 2032, subject to regulatory or patent term adjustments.

Q4. Are there similar patents globally?
A4. Yes, related patents are filed in the US, Europe, and China, forming a patent family that protects the invention across key markets.

Q5. Could the patent be challenged?
A5. Yes, challenges could arise based on prior art, lack of inventive step, or non-compliance with patentability standards. However, as granted, its current claims withstand validity tests.


References

[1] Japan Patent Office. (2019). Patent JP4733631.
[2] European Patent Office. (n.d.). Patent family documentation.
[3] U.S. Patent and Trademark Office. (n.d.). Patent family publications.
[4] China National Intellectual Property Administration. (n.d.). Patent filings.

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