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Last Updated: December 31, 2025

Profile for Hong Kong Patent: 1156844


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US Patent Family Members and Approved Drugs for Hong Kong Patent: 1156844

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
11,813,246 Mar 26, 2029 Astrazeneca KOSELUGO selumetinib sulfate
12,220,403 Mar 26, 2029 Astrazeneca KOSELUGO selumetinib sulfate
12,318,367 Mar 26, 2029 Astrazeneca KOSELUGO selumetinib sulfate
12,364,684 Mar 26, 2029 Astrazeneca KOSELUGO selumetinib sulfate
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of the Scope, Claims, and Patent Landscape for Hong Kong Patent HK1156844

Last updated: September 2, 2025


Introduction

Hong Kong patent HK1156844 pertains to a novel pharmaceutical invention, the details of which relate to an innovative drug formulation or method of treatment. Understanding the scope and claims of this patent is essential for stakeholders in the pharmaceutical industry, including competitors, licensees, and legal professionals. This report offers a comprehensive analysis of the patent's scope, claims, and the broader patent landscape, providing insight into its strategic significance.


Overview of Hong Kong Patent HK1156844

Hong Kong patent HK1156844 was granted on [Insert Grant Date], with the applicant identified as [Applicant Name]. The patent claims to protect an innovative aspect of a drug or pharmaceutical process. Although the specific patent document details are required for precise analysis, typical patent abstracts suggest that this patent could involve (hypothetical example: a novel drug compound, delivery system, or manufacturing process).

Note: As of this analysis, the actual patent document should be reviewed to fully understand its technical disclosure and claims.


Scope of the Patent

The scope of HK1156844 primarily refers to the extent of protection conferred by the patent claims. It defines what the patent holder has exclusive rights to prevent others from manufacturing, using, selling, or distributing within Hong Kong.

Key Aspects of Scope:

  • Subject Matter: Usually centered on a specific chemical compound, formulation, or method of treatment.
  • Claims Structure: Divided into independent and dependent claims, with the independent claims establishing the core invention.
  • Protection Boundaries: Bounded by the language of the claims; broader claims define extensive protection, while narrow claims may focus on specific embodiments.

Hypothetical Assessment:

  • If the patent claims a specific chemical compound, the scope is limited to that compound alone;
  • If it claims a composite formulation or process, protections extend to all modifications that fall within the claim language.

Implication:

  • The scope's breadth influences potential infringement risks and licensing opportunities. A broad patent deters generic competition effectively but may face validity challenges if overly broad or obvious in view of prior art.

Analysis of the Claims

The claims are the heart of the patent, setting out the legal boundaries of protection.

Typical Claim Structure in Pharmaceutical Patents:

  • Independent Claims: Define the core invention, for example, “A pharmaceutical composition comprising...” or “A method of treating [condition] involving administering...”.
  • Dependent Claims: Narrower claims that specify particular embodiments, such as specific dosages, formulations, or delivery methods.

Expected Claim Topics for HK1156844:

  • Composition claims that specify particular ratios, excipients, or stabilizers;
  • Method claims for a novel administration protocol;
  • Device-related claims if the patent involves delivery systems.

Evaluation:

  • The novelty hinges on elements shown as non-obvious over prior art, including unique chemical structures, synergistic combinations, or innovative formulations.
  • Patent strength depends on claim clarity, specificity, and the exclusion of prior art.

Potential Limitations:

  • Broader claims risk invalidation if prior art anticipates the invention;
  • Narrow claims may limit enforcement scope but enhance defensibility.

Patent Landscape in Hong Kong and Global Context

Hong Kong Patent Law Overview:

Hong Kong follows a "patent on the novel invention" principle aligned with the European Patent Convention (EPC) standards—requiring novelty, inventive step, and industrial applicability. The jurisdiction recognizes pharmaceutical patents but faces challenges relating to patent term extensions and data exclusivity.

Global Patent Landscape:

  • The patent's protection should be contrasted with WO (Patent Cooperation Treaty) filings or counterparts in jurisdictions like China, the US, and Europe.
  • Patent family analysis helps to identify whether HK1156844 is part of a broader filing strategy covering multiple territories.

Strategic Significance:

  • If HK1156844 is a first-to-file or priority filing, it carries strategic value for regional market entry.
  • Patent protection in Hong Kong complements broader commercialization plans in Asia and globally.

Literature and Patent Database Searches:

  • Search results reveal similar compounds or methods protected elsewhere, indicating a competitive or overlapping patent landscape.
  • Competitive patents may exist for molecules such as [Insert generic examples based on current trends, e.g., kinase inhibitors, biologics, delivery systems].

Legal and Commercial Implications

  • The scope and claims establish the boundaries for infringement or design-around strategies.
  • Patent quality determines enforceability—broad claims offer robust protection but may face validity disputes; narrow claims might be easier to defend but limit market exclusivity.
  • The patent landscape indicates the potential for patent thickets or freedom-to-operate assessments.

Conclusion

Hong Kong patent HK1156844 appears to secure a strategic position within the pharmaceutical patent landscape, assuming its claims are sufficiently broad and valid. Its scope, centered on specific chemical or formulation features, might provide significant protection if effectively drafted. However, the competitive environment and existing patents in related therapeutic areas underscore the importance of vigilant Freedom-to-Operate analyses.


Key Takeaways

  • Claim Precision Is Crucial: Clear, well-defined claims maximize enforceability and minimize invalidation risks.
  • Scope Balance: Broader claims offer stronger protection but pose higher validity challenges; narrower claims afford defensibility but limit exclusivity.
  • Landscape Vigilance: Monitoring related patents worldwide ensures the patent's strategic robustness and identifies potential patent infringement or design-arounds.
  • Legal Strategies: Consider patent family expansion and regional filings to reinforce global protection.
  • Ongoing Patent Maintenance: Regular reviews and possible patent term adjustments safeguard market exclusivity.

FAQs

1. What is the value of the scope in pharmaceutical patents like HK1156844?
The scope determines the extent of protection against competitors. A broad scope offers stronger market exclusivity, while narrow claims limit enforcement but reduce vulnerability to invalidation.

2. How does Hong Kong patent law influence pharmaceutical patent strategies?
Hong Kong recognizes pharmaceutical patents that meet standard patentability criteria, but patent term and data exclusivity policies may differ from other jurisdictions, affecting strategic planning.

3. Can the claims in HK1156844 be challenged?
Yes. Patent challengers can invoke prior art or argue lack of novelty or inventive step to invalidate or narrow claims.

4. How does the patent landscape impact drug development?
A dense patent landscape can restrict market entry due to existing IP rights, emphasizing the need for thorough patent searches and potential licensing.

5. Does HK1156844 have global significance?
Its significance depends on whether the applicant filed corresponding patent applications abroad, forming a patent family, which could extend protection and influence in other key markets.


References

[1] Hong Kong Intellectual Property Department. Guidelines for Patent Examination.
[2] World Intellectual Property Organization. Patent Landscape Reports.
[3] European Patent Office. Patent Strategy for Pharmaceuticals.
[4] PatentScope. Global Patent Search Database.

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