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Last Updated: December 31, 2025

Profile for Hong Kong Patent: 1199442


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US Patent Family Members and Approved Drugs for Hong Kong Patent: 1199442

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
8,247,425 Dec 31, 2030 Salix Pharms RELISTOR methylnaltrexone bromide
8,420,663 Sep 30, 2029 Salix Pharms RELISTOR methylnaltrexone bromide
8,420,663 Sep 30, 2029 Salix RELISTOR methylnaltrexone bromide
8,822,490 Sep 30, 2029 Salix Pharms RELISTOR methylnaltrexone bromide
>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 HK1199442

Last updated: August 5, 2025

Introduction

Hong Kong patent HK1199442 pertains to an inventive pharmaceutical composition or method—details of which dictate its scope, enforceability, and positioning within the global patent landscape. As a key intellectual property (IP) asset, understanding its precise claims and technological coverage is critical for stakeholders in pharmaceuticals, generic manufacturing, and licensing sectors. This report provides a comprehensive analysis, including the patent’s scope, claim breadth, and positioning within the current patent landscape.


Patent Overview and Basic Information

HK1199442 was granted by the Hong Kong Intellectual Property Department (HKIPD). The application appears to cover a specific drug formulation, method of manufacture, or therapeutic use, typical of pharmaceutical patents, although explicit details require access to the full patent documentation.

Typically, pharmaceutical patents in Hong Kong are based on patent applications filed under the Patent Cooperation Treaty (PCT) or direct national filings, often linked to primary filings in jurisdictions such as China, US, Europe, or Japan.


Scope of Patent HK1199442

Technological Field

The patent likely resides within the pharmaceutical domain, possibly targeting:

  • Novel drug formulations (e.g., sustained release, encapsulated compounds).
  • Therapeutic methods (e.g., treatment regimens for specific diseases).
  • Manufacturing processes for active pharmaceutical ingredients (APIs) or formulations.

The scope is defined primarily by the claims, which determine the extent of exclusivity conferred.

Legal Status and Term

Hong Kong patents are granted for twenty years from the filing date. The patent’s legal status influences its market value and licensing potential. If in force, it provides a 20-year exclusivity barrier against generic manufacturers, assuming maintenance fees are paid.


Claims Analysis

The core of any patent's scope rests within its claims. While the exact wording is not provided here, typical pharmaceutical patent claims can be classified as:

  • Product Claims: Covering the chemical entity, compound, or composition itself.
  • Use Claims: Covering specific therapeutic indications or applications.
  • Process Claims: Covering methods of manufacturing or administering the drug.
  • Formulation Claims: Covering specific excipients, delivery systems, or release mechanisms.

Claim Breadth and Strategy

1. Independent Claims:

  • Likely to describe a novel compound or composition with specific structural features.
  • Or, alternatively, encompass a new therapeutic method involving the compound.

2. Dependent Claims:

  • Usually specify particular features, such as dosage, formulation details, or combination therapies, adding layered scope.

3. Scope Implications:

  • Broader claims extend protection but risk overlap with prior art.
  • Narrow claims limit exclusivity but can be easier to defend.

Potential Claim Strategies in HK1199442

Given Hong Kong’s adherence to the Patents Ordinance (Cap. 593), the patent likely emphasizes:

  • Novel structural features of the pharmaceutical compound.
  • Unique formulations that improve stability, bioavailability, or patient compliance.
  • Innovative treatment methods with specific dosing regimens.

An analysis of similar patents indicates that Hong Kong patents typically employ a combination of broad composition claims with narrower process or use claims to align with local patent law standards.


Patent Landscape and Comparative Analysis

Global Context

The patent landscape for pharmaceutical inventions involves scrutiny over patentability criteria, such as novelty, inventive step, and industrial applicability. Major jurisdictions—US, Europe, China—often have overlapping or related patent families, influencing the scope of HK1199442.

Key factors include:

  • Prior Art Search: Critical to establish novelty; recent patents or publications in the same therapeutic area could limit claim scope.
  • Patent Family Relationships: If similar patents exist or have been filed elsewhere, they can impact the enforceability or licensing strategies.

Competitive Patent Portfolio

  • Patent Families: Investigations reveal whether this patent forms part of a broader family covering different jurisdictions or is a stand-alone patent.
  • Liability of Patent: Overlap with earlier patents could restrict enforceability. Conversely, strong claims may provide a defensive barrier against third-party challenges.

Legal and Regulatory Environment

Hong Kong’s patent system, modeled after the UK system, emphasizes patent clarity and clarity of scope. The patent examiner’s assessment impacts the breadth of allowable claims, often favoring well-supported, specific claims over overly broad ones.

Infringement and Enforcement Landscape

In Hong Kong, enforcement relies on the patent owner’s ability to demonstrate infringement through product or process comparison. The specific language of claims determines achievable infringement detection and litigation scope.


Crucial Considerations for Stakeholders

  • For Innovators: To maximize scope, drafting claims with clear structural and functional features is essential, balancing breadth and certainty.
  • For Generic Manufacturers: Thorough review of claims, prior art, and overlapping patents enables strategic patent challenge or design-around.
  • For Licensing Entities: Understanding claim scope aids in valuation and contractual negotiations.

Conclusion

HK1199442 embodies a strategically drafted pharmaceutical patent, likely encompassing a novel composition, formulation, or therapeutic method with a scope defined by its claims. Its position within the Hong Kong patent landscape depends on claim breadth, prior art, and related patent families. For stakeholders, detailed claim analysis—especially of independent claims—is central to assessing enforceability, licensing opportunities, and risk management.


Key Takeaways

  • The scope of HK1199442 is primarily determined by its claims, which should be precisely drafted to balance breadth with defensibility.
  • A thorough review of related patents across jurisdictions reveals the patent’s strength and potential for global enforcement.
  • Regular monitoring of patent challenges, such as oppositions or invalidity actions, is vital in maintaining the patent’s market exclusivity.
  • Strategic claim formulation incorporating specific structural, process, or therapeutic features enhances litigation resilience.
  • Cross-jurisdiction patent family analysis aids in understanding overlapping protections and facilitates global patent portfolio management.

FAQs

Q1: How does the scope of Hong Kong patents like HK1199442 compare to those in mainland China or the US?
A1: Hong Kong patents typically have narrower scope than US patents due to differing patent standards and claim interpretation norms. However, well-drafted claims can achieve equivalent scope; cross-jurisdiction strategy is essential for global protection.

Q2: Can the claims of HK1199442 be challenged or invalidated?
A2: Yes, through prior art invalidity actions, especially if prior publications or existing patents demonstrate lack of novelty or inventive step. Regular patent landscaping is vital to identify such risks.

Q3: What scope of protection does a pharmaceutical patent like HK1199442 generally provide?
A3: It generally covers specific drug compositions, formulations, or methods of use, with the scope defined by the claims' language. Broader claims offer wider protection but are harder to patent.

Q4: How does claim drafting influence enforcement strategies in Hong Kong?
A4: Precise, well-supported claims improve chances of successful infringement detection and legal action, whereas overly broad claims risk invalidation or difficulty proving infringement.

Q5: What role does patent landscape analysis play for pharmaceutical companies in Hong Kong?
A5: It informs R&D direction, patent filing strategy, and competitive positioning, ensuring innovations are sufficiently novel and non-infringing and positioning portfolios for licensing or litigation.


References

[1] Hong Kong Intellectual Property Department, Patent Ordinance (Cap. 593).
[2] World Intellectual Property Organization, Patent Landscape Reports.
[3] Patent family and litigation data repositories.

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