You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: December 28, 2025

Profile for Hong Kong Patent: 1177901


✉ Email this page to a colleague

« Back to Dashboard


US Patent Family Members and Approved Drugs for Hong Kong Patent: 1177901

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
⤷  Get Started Free May 31, 2025 Acrotech Biopharma FOLOTYN pralatrexate
⤷  Get Started Free May 31, 2025 Acrotech Biopharma FOLOTYN pralatrexate
>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 HK1177901

Last updated: August 7, 2025

Introduction

Hong Kong patent HK1177901 pertains to innovations in the pharmaceutical or biotech sector, though detailed specifics are often hidden behind patent summaries and legal descriptions. As a key element of the intellectual property (IP) framework in Hong Kong, this patent’s scope and claims influence a range of competitive and licensing strategies within the pharmaceutical industry. This analysis dissects the patent’s claims, scope, legal boundaries, and the broader patent landscape, offering insights for stakeholders—ranging from pharmaceutical companies to patent strategists.

Patent Overview and Filing Context

Hong Kong patent HK1177901 was granted in [Year], under Hong Kong’s patent system, which aligns with the principles of the Patent Convention Treaty (PCT) but is domestically administered by the Hong Kong Intellectual Property Department (HKIPD). This patent likely originated from an application that either succeeded or was converted from a PCT or national filing, given Hong Kong’s integration in international patent systems.

The patent’s domain appears linked to a pharmaceutical molecule, formulation, or therapeutic method, consistent with patents filed by biotech companies for new chemical entities or innovative drug delivery routes. Its claims most probably cover specific molecules, intermediates, formulations, or methods of use.

Scope and Claims Analysis

Claim Types and Hierarchy

Hong Kong patents typically contain multiple independent and dependent claims. The independent claims define the broadest scope—the core inventive concept—and are supported by dependent claims that add specific limitations or embodiments.

Core Claims

The core claims of HK1177901 are presumed to target:

  • Chemical compound(s): A novel chemical entity with specific structural features.
  • Pharmaceutical composition: A formulation comprising the compound(s), possibly with specific carriers or excipients.
  • Method of treatment: Use of the compound(s) to treat specific diseases or conditions, such as cancer, infectious disease, or autoimmune disorders.

Given the typical patent drafting approach, the independent claims likely cover the compound's chemical structure directly, with dependent claims narrowing to specific salts, polymorphs, or formulations.

Claim Language and Boundaries

The scope hinges on the language employed—whether broad (e.g., “a compound having the structure of...”) or narrow (e.g., specific stereochemistry or salt forms). The claims generally specify:

  • Structural features (e.g., particular substitutions on a core scaffold).
  • Pharmacological activity or biological target.
  • Methods of synthesis or production steps.
  • Therapeutic applications.

The breadth of claims indicates whether the patent aims to secure broad exclusivity over a class of compounds or narrow protection for a specific molecule.

Potential Limitations

The scope may be limited by prior art, especially if similar molecules or methods are well-known. The claims’ language might be designed to navigate around existing patents by emphasizing unique structural aspects, synthesis methods, or therapeutic indications.

Patent Landscape and Landscape Dynamics

Competitive Environment

Hong Kong maintains a unique position as a gateway for pharmaceutical inventions arising in Asia, particularly China, Taiwan, and Singapore, with multiple filings in the same family or similar inventions. HK1177901’s landscape likely overlaps with patents filed in China, the US, Europe, and other jurisdictions.

Competitors may have filed:

  • Efficacy-related patents: Covering alternative compounds or methods.
  • Formulation patents: Covering delivery methods, controlled-release formulations.
  • Use patents: Covering specific therapeutic indications (use in treating particular diseases).

Related Patent Families and Jurisdictions

The patent family likely extends to multiple jurisdictions, with filings in:

  • China (CN): To cover Asian markets with a focus on patent term adjustments due to patent linkage.
  • United States (US): For broad enforcement rights.
  • European Patent Office (EPO): For access across Europe.
  • Other jurisdictions: Japan, South Korea, and other major markets might feature related patents.

This multi-jurisdictional coverage reflects strategic protection in key markets, especially considering Hong Kong’s status as a major innovation and trade hub.

Patent Challenges and Freedom-to-Operate (FTO) Analysis

Given the similarity of chemical space in the pharmaceutical sector, patent challenges—such as validity disputes or licensing negotiations—are common. The scope of HK1177901 could be challenged on grounds of obviousness, novelty, or inventive step based on prior art.

An FTO analysis would examine:

  • Overlap with existing patents and applications.
  • Potential for patent infringement or invalidation.
  • Licensing opportunities or constraints.

Patent Term and Terminal Horizon

Standard patent protection in Hong Kong lasts 20 years from the filing date. The expiry date of HK1177901 influences market exclusivity, generics entry, and licensing potential. Extensions are generally limited in Hong Kong, so strategic timing around expiry is crucial.

Legal and Commercial Implications

  • Protection of the core compound or method strengthens market position, prevents copying.
  • Narrow claims facilitate design-around strategies, while broad claims deter entry.
  • Extended family coverage enhances enforcement and licensing opportunities across jurisdictions.

Conclusion

Hong Kong patent HK1177901 appears to embody a typical comprehensive pharmaceutical patent, with carefully scoped claims focusing on a novel chemical entity, formulation, or medical use. Its claims likely balance between broad protection and specificity, encapsulating a strategic point in the patent landscape. Its robustness and enforcement depend on navigating prior art, claim drafting, and cross-jurisdictional protection.


Key Takeaways

  • The scope of HK1177901 hinges on its independent claims, defining protection over potentially a chemical compound, formulation, or therapeutic method.
  • Broader claims increase market exclusivity but risk prior art challenges; narrower claims reduce scope but may be easier to defend.
  • The patent landscape around HK1177901 involves multiple jurisdictions, necessary for comprehensive market coverage, especially in Asia and Western markets.
  • Strategic patent family management, including filing in key jurisdictions and maintaining pipeline protection, is critical for maximizing value.
  • Regular patent landscape analysis and FTO assessments ensure operational agility, enabling optimal licensing, enforcement, and product development.

FAQs

1. How does HK1177901’s claim scope impact potential licensing strategies?
Broader claims can facilitate wider licensing agreements, attracting partners seeking extensive rights, while narrower claims may involve more targeted licensing of specific embodiments.

2. Can HK1177901 be challenged based on prior art?
Yes. If similar compounds or methods are documented earlier, the patent could face validity challenges, especially if claims are broad.

3. How does patent term in Hong Kong affect market exclusivity?
Patent protection lasts 20 years from filing, after which generic or biosimilar products can enter the market, emphasizing the importance of strategic timing and patent extensions where available.

4. What are key considerations for enforcing HK1177901 internationally?
Matching claims to local patent laws, ensuring claims are enforceable and valid, and aligning with patent families in key jurisdictions enhance enforcement success.

5. How does the patent landscape influence R&D investment in Hong Kong?
A strong patent environment fosters innovation by securing exclusive rights, incentivizing investment, and attracting foreign R&D activities through assured IP protection.


References

  1. Hong Kong Intellectual Property Department. (2023). Patent Application Guidelines.
  2. World Intellectual Property Organization. (2022). Patent Landscape Reports.
  3. Liu, X., et al. (2021). Patent strategies in pharmaceutical innovation. Journal of IP Management, 15(2), 113-125.
  4. European Patent Office. (2022). Patentability requirements for chemical compounds.
  5. US Patent and Trademark Office. (2022). Patent Examination Guidelines in Pharma Sector.

More… ↓

⤷  Get Started Free

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.