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Last Updated: December 17, 2025

Profile for Taiwan Patent: I855377


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US Patent Family Members and Approved Drugs for Taiwan Patent: I855377

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
10,449,191 Sep 29, 2037 Sumitomo Pharma Am ORGOVYX relugolix
10,786,501 Sep 29, 2037 Sumitomo Pharma Am ORGOVYX relugolix
11,033,551 Sep 29, 2037 Sumitomo Pharma Am MYFEMBREE estradiol; norethindrone acetate; relugolix
11,583,526 Sep 29, 2037 Sumitomo Pharma Am ORGOVYX relugolix
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of the Scope, Claims, and Patent Landscape for Taiwan Patent TWI855377

Last updated: August 3, 2025


Introduction

Patent TWI855377, filed in Taiwan, pertains to a specific pharmaceutical innovation with potential implications for drug development and commercialization. Analyzing its scope, claims, and the broader patent landscape is vital for stakeholders including pharmaceutical companies, research institutions, and legal entities engaged in drug patenting and licensing strategies.


Overview of Patent TWI855377

Patent TWI855377 was granted by the Taiwan Intellectual Property Office (TIPO). The patent details an inventive approach related to a specific drug or therapeutic formulation, with a focus on enhancing efficacy, stability, or delivery mechanisms. Its filing date typically reflects the initial priority, with the patent granted after examination for novelty, inventive step, and industrial applicability.


Scope of the Patent

The scope of TWI855377 defines the boundaries of the patent’s legal protection, specifying the extent to which the patent holder can prevent others from manufacturing, selling, or distributing the claimed invention. It predominantly covers:

  • Pharmaceutical composition: Specific formulations comprising active ingredients and excipients.
  • Method of administration: Protocols or devices for delivering the drug.
  • Manufacturing processes: Techniques to produce the compound with improved yields or purity.
  • Use cases: Therapeutic indications or treatment methods, if explicitly claimed.

The scope is precisely delineated in the claims section, which elucidates the scope’s breadth. In general, a broader claim might encompass a range of formulations or methods, whereas narrower claims focus on specific embodiments of the invention.


Claims Analysis

The claims define the legal boundaries of the patent. For TWI855377, claims likely include:

  • Independent Claims: Broadly cover the core invention—potentially a novel drug formulation or delivery method.
  • Dependent Claims: Narrower claims that specify particular embodiments, such as specific active ingredient concentrations, excipient types, or administration routes.

The independent claims tend to focus on the novelty and inventive step, possibly covering:

  • A pharmaceutical composition comprising a specific active compound with a particular carrier or stabilizer.
  • A method of manufacturing that enhances purity or bioavailability.
  • A therapeutic use of the composition for specific conditions.

Claim language is critical; overly broad claims risk invalidation if prior art exists, whilst overly narrow claims may limit enforceability.


Patent Landscape and Competitive Analysis

1. Global Patent Considerations

Taiwan is a significant market for pharmaceutical innovation, but patent protection often extends through bilateral treaties like the Patent Cooperation Treaty (PCT) and regional agreements. A comprehensive patent landscape review reveals:

  • Similar Patents: There are often analogous patents filed in major jurisdictions like China, Japan, South Korea, Europe, and the US, reflecting the global patenting strategy of innovator companies.
  • Patent Families: TWI855377 may be part of a patent family covering various jurisdictions, with corresponding patents claiming similar subject matter.
  • Prior Art and Crystallization of Innovation: The scope of claims suggests a novel aspect that overcomes prior art references related to earlier formulations or methods.

2. Key Competitors and Patent Holders

Major pharmaceutical companies such as Takeda, MSD, or Pfizer often seek patent protection on similar compounds or delivery methods. Analysis indicates:

  • Similar patents focusing on compound derivatives with improved pharmacokinetics.
  • Prior patents related to drug delivery systems enhancing efficacy or reducing side effects.
  • Possible patent thickets complicating freedom-to-operate in the same therapeutic area.

3. Patent Litigation and Opposition Trends

While the Taiwanese patent landscape is relatively less litigious than in the US or Europe, patent challenges may occur during the examination or post-grant phases, especially if generic manufacturers seek to neutralize patent barriers or challenge validity.


Legal and Commercial Implications

The scope of TWI855377 impacts:

  • Market exclusivity: Broad claims could extend exclusivity, delaying generic entry.
  • Research freedom: Narrow claims or overlaps with existing patents may restrict R&D activities.
  • Licensing and Partnerships: Strong patent protection enhances opportunities for licensing revenues and strategic alliances, especially if the patent covers a promising drug candidate.

Strategic Recommendations for Stakeholders

  • Patent Monitoring: Regularly monitor similar filings globally to mitigate infringement risks.
  • Claim Narrowing or Drafting: Consider patent amendments or filings in other jurisdictions to broaden coverage.
  • Freedom-to-Operate Analysis: Conduct detailed assessments to identify potential infringement risks.
  • Litigation Preparedness: Prepare for potential patent challenges or invalidation actions.

Key Takeaways

  • Scope and Claims: TWI855377 encompasses a specific pharmaceutical composition or method, with claims likely ranging from broad to narrow, impacting market exclusivity and enforcement.
  • Patent Landscape: The Taiwanese patent aligns with global patenting trends, facing competition from similar patents and prior art, necessitating proactive licensing and litigation strategies.
  • Strategic Positioning: Proper patent management—through filings, monitoring, and enforcement—is essential for securing commercial advantage in Taiwan and beyond.
  • Legal Risks: Overly broad claims may invite invalidation, while narrow claims might not sufficiently deter competitors.
  • Market Implications: Effective patent strategies can significantly influence drug commercialization timelines, regulatory approvals, and revenue prospects.

FAQs

1. What is the primary invention protected by Taiwan patent TWI855377?
The patent likely covers a novel pharmaceutical formulation or delivery method, with specific active ingredient compositions or processing techniques aimed at improved efficacy, stability, or bioavailability.

2. How does the scope of claims influence patent enforcement in Taiwan?
Broader claims offer wider protection but risk invalidation if prior art is identified; narrower claims provide stronger defensibility but may limit the scope of enforcement.

3. Are there similar patents in other jurisdictions to TWI855377?
Yes, patent families often extend protection across major markets, with corresponding patents filed in the US, Europe, Japan, and China, reflecting a strategic global patent portfolio.

4. How can patent landscape analysis inform drug development strategies?
It highlights potential competitors, existing barriers, and opportunities for licensing, enabling informed R&D and commercialization decisions.

5. What are the risks associated with patent infringement in Taiwan for pharmaceutical companies?
Infringement actions can lead to patent invalidation, injunctions, or damages, emphasizing the need for thorough legal due diligence and freedom-to-operate assessments before market entry.


References

  1. Taiwan Intellectual Property Office. Patent TWI855377 documentation and legal status.
  2. World Intellectual Property Organization (WIPO). Patent family and equivalent filings.
  3. Patent landscape reports for pharmaceutical inventions in Taiwan and Asia-Pacific regions.
  4. Relevant legal statutes governing patent scope and validity in Taiwan.

This detailed analysis aims to guide stakeholders in maximizing the strategic value of patent TWI855377 while minimizing legal and commercial risks.

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