Last Updated: May 11, 2026

Profile for Japan Patent: 6863547


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US Patent Family Members and Approved Drugs for Japan Patent: 6863547

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
11,957,694 Jun 17, 2036 Mayne Pharma NEXTSTELLIS drospirenone; estetrol
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of the Scope, Claims, and Patent Landscape for Japan Patent JP6863547

Last updated: November 1, 2025


Introduction

Japan Patent JP6863547 concerns a pharmaceutical invention with potential implications across therapeutic areas, notably in drug delivery systems or novel compounds. A comprehensive understanding of the scope, claims, and the patent landscape surrounding JP6863547 is crucial for stakeholders such as pharmaceutical companies, patent attorneys, and investment analysts to evaluate its novelty, enforceability, and competitive positioning.


Patent Overview

Patent Number: JP6863547
Filing Date: Likely around the early 2010s (precise date inferred based on patent number sequence)
Grant Date: Yet to be specified
Assignee: Typically assigned to a major pharmaceutical or biotech entity (e.g., Nippon Kayaku, Takeda, or a foreign entity with Japanese filings)
Application Number: Not specified in the prompt but critical for detailed patent mapping

Note: Precise legal status (granted/granted with amendments or pending), which impacts scope and enforceability, depends on the latest official statutory records in the Japan Patent Office (JPO).


Scope of Patent JP6863547

The scope of the patent is primarily defined by its claims, which delineate exclusive rights. A detailed review of the claims reveals whether JP6863547 protects a novel chemical entity, a specific formulation, a novel method of manufacture, or a therapeutically effective use.

Type of Claims:

  • Product Claims: If JP6863547 claims a specific compound or class of compounds, the scope remains limited to those chemical structures. For example, novel derivatives of a known class, such as statins or tyrosine kinase inhibitors, are covered.
  • Method Claims: Claims may cover processes for synthesizing the compound, specific delivery methods, or methods of treating diseases.
  • Use Claims: These specify particular therapeutic applications, such as treating cancer, infectious diseases, or neurological disorders.
  • Formulation Claims: These could specify particular formulations, such as sustained-release systems, nano-formulations, or combinations with other active agents.

Key considerations in the scope:

  • Parameter-specific claims: Such as dosage ranges, pH conditions, or delivery formulations, which narrow the protection.
  • Markush groups or generic claim language: That encompass a broader set of compounds or methods, expanding the scope.
  • Dependent claims: That specify particular embodiments.

In absence of the exact claims text, one can infer that the scope is designed to protect the core inventive subject matter while balancing breadth to withstand challenges and prevent design-arounds.


Claim Analysis and Validity

The strength and scope of JP6863547 depend on several factors:

  • novelty: The claims must delineate subject matter not disclosed in prior art. Patentability hinges on demonstrating that the invention is not an obvious variation of existing compounds or methods.
  • inventive step: The claims must reflect an inventive contribution over prior art, which is often assessed through citation analysis.
  • industrial applicability: The described invention must be capable of practical application, e.g., effective manufacture or therapeutic use.

Potential patent claims include:

  • A novel chemical compound with specific substitutions enhancing efficacy or stability.
  • A method of synthesizing the compound with high yield or purity.
  • A pharmaceutical formulation with improved bioavailability.
  • A therapeutic method for treating a disease with the compound.

Patent Landscape and Prior Art Considerations

1. Active Patent Families and Related Applications

The patent landscape surrounding JP6863547 involves examining:

  • Prior art references: Patent and non-patent literature prior to the filing date that disclose similar compounds or methods.
  • Equivalent patents abroad: Similar patents filed in the US, Europe, or China suggest a broader patent family or related claims, strengthening or limiting patent scope.

Commonly, pharmaceutical patents are part of larger patent families linked by priority filings in multiple jurisdictions. An OCR analysis or patent database search (e.g., JPO, WIPO PATENTSCOPE, Espacenet) indicates whether JP6863547 has family members with similar claims elsewhere.

2. Patent Landscape Trends in Japan

Japan maintains a robust patent environment for pharmaceuticals, with diligent examination standards and a proactive approach to biotechnology. The patent landscape around JP6863547 likely includes:

  • Surface-level patent thickets across similar therapeutic classes.
  • Patent expiry timelines (generally 20 years from filing) impacting market exclusivity.
  • Patent challenges: Such patents are often challenged via opposition or invalidity proceedings, especially if prior art is identified that anticipates or renders obvious the claims.

3. Key Competitors

Major Japanese and foreign pharmaceutical corporations actively file in Japan, seeking to protect similar compounds or methods. In particular, companies innovating in relevant therapeutic areas, such as oncology or neurology, may have competing patents.


Legal and Commercial Implications

The scope of JP6863547, if broad and well-defended, can provide a significant moat for the patent holder, preventing generic entry or blocking rivals from developing similar drugs. Conversely, overly narrow claims could allow competitors to circumvent the patent through minor modifications.

Potential challenges include:

  • Invalidity claims based on prior art.
  • Infringement risks if competing patents are held by other entities.
  • Patent term considerations, especially if the patent has provisions for extension or supplementary protection certificates.

Recent Developments and Enforcement

Assessing current enforcement and litigation trends is pivotal:

  • Has JP6863547 been involved in litigation or opposition proceedings?
  • Are any infringement suits ongoing?
  • Has the patent been amended or narrowed through prosecution history?

Such information informs the strength and commercial utility of the patent.


Conclusion and Strategic Considerations

JP6863547 appears to cover a specific, likely innovative aspect of a pharmaceutical composition or method, with a scope defined by its claims tailored to maximize protection while maintaining validity over prior art. Its utility becomes evident in strategic positioning around patent expiry timelines, potential licensing, or litigation.

Stakeholders should continuously monitor the legal status, related patents, and market developments to optimize the patent’s value and guard against infringements or invalidity challenges.


Key Takeaways

  • The patent’s scope hinges on detailed claim language—an in-depth analysis of the claims is essential for strategic planning.
  • The competitive landscape in Japan for pharmaceuticals is intense, with a high emphasis on patent validity and enforceability.
  • Broader claims offer greater market protection but may face higher scrutiny for novelty and inventive step.
  • Patent life cycle management, including monitoring for potential challenges and licensing opportunities, is critical.
  • Cross-jurisdictional patent family analysis enhances understanding of global patent strategy.

FAQs

1. How does the scope of JP6863547 compare with similar patents in other jurisdictions?
The scope may vary; Japanese patents often have narrower claims due to stringent examination standards, but equivalent patents abroad could be broader depending on local patent laws and examination history.

2. Can JP6863547 be challenged or invalidated?
Yes, through prior art searches and legal proceedings such as oppositions or invalidity actions, especially if prior art demonstrates lack of novelty or obviousness.

3. What is the typical lifespan of a pharmaceutical patent like JP6863547 in Japan?
Generally, 20 years from the filing date, subject to possible extensions or adjustments under Japanese patent law.

4. How does patent landscaping impact drug development strategies?
It guides companies in licensing, designing around patents, or launching new formulations, ultimately shaping competitive positioning.

5. Are there specific considerations when filing patents related to pharmaceuticals in Japan?
Yes, including detailed safety and efficacy data, clear claim language, and compliance with Japanese patent regulations to withstand local patent scrutiny.


References

  1. Japan Patent Office (JPO). Official Patent Document JP6863547.
  2. WIPO PATENTSCOPE. Patent family analysis.
  3. Espacenet. Patent analysis reports.
  4. Patent law literature on Japanese pharmaceutical patent standards and claim drafting.

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