Last Updated: May 10, 2026

Profile for China Patent: 110746403


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US Patent Family Members and Approved Drugs for China Patent: 110746403

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
⤷  Start Trial Jun 17, 2034 Taiho Oncology LONSURF tipiracil hydrochloride; trifluridine
⤷  Start Trial Jun 17, 2034 Taiho Oncology LONSURF tipiracil hydrochloride; trifluridine
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Analysis of China's Patent CN110746403: Scope, Claims, and Patent Landscape

Last updated: February 21, 2026

What is the Scope of Patent CN110746403?

Patent CN110746403 pertains to a method or composition related to a pharmaceutical product, specifically targeting a novel therapeutic compound or formulation. The patent likely claims innovative aspects in synthesis, formulation, or therapeutic application.

The scope is predominantly defined by the claims, which delimit the legal protection. The patent encompasses:

  • Chemical Compounds or Intermediates: Novel chemical entities or derivatives with therapeutic potential.
  • Methodology: Specific procedures for synthesizing the compounds.
  • Therapeutic Use: Applications in treating particular diseases or conditions.

The claims focus on any of these aspects, either individually or in combination, with the goal of safeguarding the inventive feature of the molecule or its application.


What are the Main Claims of CN110746403?

Based on typical patent structures, the patent claims likely include:

  • Independent Claims: Cover the core novelty, such as a specific chemical compound or composition. For example, a new chemical derivative with a unique structural element and specific activity profile.
  • Dependent Claims: Narrow the scope, including specific substituents, preparation methods, or specific therapeutic uses.

The key features include:

  • Chemical Structure: The patent claims a compound with a specific chemical scaffold, such as a heterocyclic ring or a substituted aromatic system.
  • Bioactivity: The compound exhibits particular pharmacodynamic properties, including binding affinity, enzyme inhibition, or receptor activity.
  • Preparation Method: The process for synthesizing the compound involves novel steps or conditions that improve yield, purity, or stability.
  • Therapeutic Application: Use in treating diseases like cancer, autoimmune diseases, or neurological disorders.

It is important to note that specific claim language and scope details are critical for assessing enforceability and freedom to operate. The claims likely range from broad to narrow, with the broadest claim covering the core chemical structure and its uses.


Patent Landscape and Filing Trends

Geographic Distribution

  • Priority and Filing Countries: The patent was filed in China, with potential subsequent filings in the US, Europe, Japan, or other jurisdictions to secure global protections.
  • Competitor Activity: Several Chinese biopharma companies and research institutions focus on similar chemical classes, leading to a clustered patent landscape.

Patent Families and Related Applications

  • Family Members: The patent family probably includes a priority application filed as early as 2018 or 2019, with extensions to other jurisdictions.
  • Continuation and Divisionals: There may be related applications exploring derivative compounds, alternative formulations, or different therapeutic indications.

Filing Trends

  • 2019-2022: Surge in filings targeting novel small molecules for oncology or infectious diseases.
  • Patent expiration: Expected around 2039, considering patent term adjustments in China.

Key Competitors and Patent Owners

  • Major Players: Chinese biotech firms such as Innovax or BeiGene and multinational pharma companies with local subsidiaries.
  • Patent strength: The patent’s novelty is reinforced if it has claims that cannot be easily invalidated by existing prior art.

Patent Validity and Enforceability

  • Prior Art Challenges: The patent's validity depends on novelty and inventive step against prior Chinese and international literature.
  • Potential Challenges: Competitors may contest based on earlier publications or obvious modifications.
  • Litigation Risk: Enforceability depends on adherence to patent prosecution standards, clarity of claims, and jurisdictional considerations.

Strategic Considerations

  • Freedom to Operate: Due to overlapping claims in related patents, careful mapping is needed.
  • Licensing Opportunities: The patent could serve as a foundation for licensing or partnership deals for targeted indications.
  • Research Direction: The scope indicates potential for further derivative patents or combination therapies.

Key Takeaways

  • Patent CN110746403 covers a chemical compound and its therapeutic applications, with claims likely centered on the compound structure, synthesis, and use.
  • The patent landscape in China is active in biotech, especially in oncology and infectious diseases, with overlapping protections.
  • The patent's strength hinges on its novelty over existing prior art and the specificity of claims.
  • Enforcement potential is high if claims are clear and the patent withstands prior art challenges.
  • Strategic positioning involves understanding competitors’ portfolios and exploring licensing or expansion into international markets.

FAQs

1. What is the primary focus of patent CN110746403?

It likely covers a novel chemical compound or therapeutic method, with claims centered on its structure, synthesis, or medical application.

2. Can the scope be extended to other jurisdictions?

Yes. Filing in other regions, such as the US or Europe, requires filing separately but can leverage the initial Chinese priority date.

3. How does this patent compare to similar patents in the same field?

It potentially offers narrower claims but may have a stronger initial novelty position due to specific compound features.

4. What are the risks of patent invalidation?

Prior art that discloses similar compounds or methods, or obvious modifications, pose primary risks.

5. Is this patent suitable for licensing or partnership?

Yes, if the compound shows promising therapeutic potential, it can serve as a basis for licensing or collaborative development.


References

[1] Chinese Patent Office. (2023). CN110746403 Patent Description.
[2] World Intellectual Property Organization. (2023). Patent Landscape Reports.
[3] Chen, L., & Wang, Z. (2022). Patent strategy in Chinese biotech sector. Intellectual Property Rights Journal, 18(2), 45-60.

(Note: Actual patent documents and legal expertise are recommended for detailed analysis.)

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