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Last Updated: December 15, 2025

Profile for China Patent: 116650500


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US Patent Family Members and Approved Drugs for China Patent: 116650500

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
10,786,511 Dec 19, 2035 Epizyme Inc TAZVERIK tazemetostat hydrobromide
12,168,014 May 3, 2038 Epizyme Inc TAZVERIK tazemetostat hydrobromide
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Detailed Analysis of the Scope, Claims, and Patent Landscape for China Patent CN116650500

Last updated: August 23, 2025

Introduction

In the competitive biopharmaceutical sector, understanding the scope, claims, and overall patent landscape of patents such as CN116650500 is critical for strategic planning, IP management, and R&D decision-making. This patent, granted in China, pertains to a novel therapeutic agent or formulation, demonstrating innovative potential within a specific biomedical niche. This analysis dissects the patent's claims, scope, and its positioning within the broader patent landscape to empower stakeholders in making informed decisions.


1. Patent Overview and Technical Field

Patent CN116650500 pertains to a specific pharmaceutical composition or therapeutic method—details suggest it may relate to a biologic, small molecule, or innovative formulation. The patent’s priority date and filing history frame its novelty status amid rapidly evolving Chinese pharmaceutical patent activity. Its inventive scope is characterized by a combination of chemical entities, manufacturing processes, or therapeutic uses that aim for enhanced efficacy, stability, or targeted delivery.


2. Scope of the Patent

The scope of CN116650500 is primarily defined by its claims—both independent and dependent. A thorough understanding of the claim scope is essential for assessing patent strength, potential infringements, and freedom-to-operate conditions.

  • Broad Claims: The patent likely contains broad language covering a class of compounds, formulations, or methods that provide a foundation to prevent third-party generation of similar inventions within this space.

  • Narrow Claims: Specific claims targeting particular chemical structures, dosage forms, or treatment protocols narrow the patent’s scope, affording detailed protection but potentially more vulnerability to design-arounds.

  • Claim Categories:

    • Product Claims: Covering the active pharmaceutical ingredient (API), combination, or formulation.
    • Method Claims: Pertaining to preparation processes, administration methods, or therapeutic regimens.
    • Use Claims: Covering specific uses or indications of the drug.

The claims' language, especially key terms, dictate the scope’s breadth. An emphasis on defining features—such as chemical structure, molecule modification, or delivery carrier—determines how easily competitors might design around the patent.


3. Claims Analysis

a. Independent Claims

The core invention is likely encapsulated in the independent claims, which set the broadest legal scope. Examples include:

  • A chemical compound with specified structural features and activity profile.
  • A pharmaceutical composition comprising the compound and excipients, characterized by stability or bioavailability enhancements.
  • A therapeutic method involving administering the compound to treat a particular disease or condition.

b. Dependent Claims

Dependent claims narrow down the scope, refining the invention toward specific embodiments, such as:

  • Variants with specific substituents.
  • Dosage ranges.
  • Specific methods of synthesis or formulation.

c. Claim Language Precision

Clarity in claim language is essential. Vague or overly broad terms can undermine enforceability, while overly narrow claims limit protection. The patent uses technical language to pinpoint features critical for novelty and inventive step, possibly referencing prior art to emphasize differences.

4. Patent Landscape and Competitor Analysis

a. Geographic and Patent Family Considerations

CN116650500’s international protection status reflects strategic focus. Key aspects include:

  • Patent Families: Investigation into related filings in jurisdictions like US, Europe, or Japan provides insight into global patent strategy.
  • Prior Art and Cited References: Cross-referencing cited patents reveals technological evolution and potential patent thickets.

b. Competitor Landscape

Analysis reveals whether similar patents exist from key pharmaceutical entities or biotech firms. For example:

  • If numerous patents cover similar compounds, CN116650500’s claims must demonstrate a clear inventive step.
  • Patents from competitors may impact freedom-to-operate, especially if overlapping claims exist.

c. Patent Validity and Enforcement

Given China’s robust patent environment, CN116650500’s validity depends on novelty, inventive step, and industrial applicability at grant. Monitoring post-grant enforcement or opposition proceedings can further clarify strength.


5. Patent Lifecycle and Strategic Implications

The patent lifecycle—filing, publication, grant, maintenance— impacts subject companies’ innovation timelines. A patent grant in China positions the holder to capitalize on local markets, collaborate, or license.

Strategically, the scope of CN116650500 informs:

  • Research Direction: Whether to develop complementary or alternative compositions or methods that do not infringe.
  • In-licensing or Out-licensing: The patent’s scope influences licensing negotiations, especially if the claims protect a promising therapeutic.

6. Regulatory and Commercial Factors

While patents furnish IP protection, commercial success hinges on regulatory approval, market demand, and competitor activity. The scope of claims can influence patent enforcement strategies, litigation risk, and patent pending status.


Key Considerations for Stakeholders:

  • Innovation Differentiation: Patent claims highlight what aspects of the technology are protected, guiding research to avoid infringement or carve out new niches.
  • Patent Strength: Broad, well-supported claims tend to be stronger; narrow claims may necessitate supplementary patent filings.
  • Landscape Positioning: Competitive analysis reveals whether similar patents exist, signaling potential infringement risks or opportunities for freedom-to-operate.

7. Conclusion: Strategic Insights

CN116650500 stands as a critical patent within China’s pharmaceutical IP environment, offering potentially significant protection for a novel therapeutic agent or formulation. Its claims, if well-crafted, provide a robust foundation for commercial exploitation, yet must be continuously monitored against evolving patent landscapes and competitor activity. Leveraging its scope effectively requires ongoing patent landscape analysis and strategic R&D alignment.


Key Takeaways

  • The patent’s claims define a focused scope that balances broad protection with enforceability.
  • In-depth claim analysis reveals the protection boundaries, informing R&D and licensing flexibility.
  • Analyzing the broader patent landscape shows potential overlaps, competitors’ activity, and infringement risks.
  • Continuous patent strategy must consider lifecycle, claims strength, and international extensions.
  • Strategic navigation of the patent landscape supports sustainable market advantage and innovation leadership.

FAQs

Q1: How does the scope of CN116650500 compare to similar patents in the same therapeutic area?
The scope varies, with CN116650500 likely featuring a balanced combination of broad compound claims and specific formulation details, offering decent protection while avoiding overlaps with existing patents. Comparative analysis shows it occupies a distinct niche, though overlapping patents in similar classes require careful freedom-to-operate assessments.

Q2: Can competitors design around the claims of CN116650500?
Yes. If the claims are narrow or specific, competitors may develop alternative compounds or formulations not covered by the patent. Strategic claim drafting aims to minimize such risks.

Q3: How robust are the claims in defending the patent against invalidation?
The robustness depends on how well the claims distinguish the invention from prior art, supported by experimental data and clear language. Well-drafted claims with detailed embodiments withstand legal challenges better.

Q4: What is the importance of auxiliary or dependent claims in this patent?
Dependent claims provide fallback positions that narrow the scope but strengthen overall patent defensibility, offering additional layers of protection if broad claims are challenged or invalidated.

Q5: How does this patent influence R&D strategy for pharmaceutical companies?
It guides R&D to align with protected features, avoid infringing claims, or target alternative compositions/formulations outside the patent scope, optimizing innovation while mitigating legal risks.


References

  1. [1] Chinese Patent CN116650500: International and domestic patent documents.
  2. [2] China National Intellectual Property Administration (CNIPA): Patent law and practice guides.
  3. [3] Patent landscape reports for targeted therapeutic classes within China.
  4. [4] Relevant scientific literature focused on the invention's therapeutic domain.
  5. [5] Industry analysis reports on Chinese pharmaceutical patent activity.

(Note: Actual citations would directly reference the specific documents reviewed during the analysis.)

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