Last updated: February 25, 2026
What is the scope of patent CN107669640?
Patent CN107669640, filed by [Patent Holder], covers a pharmaceutical composition and its use for treating [indication], specifically targeting [target pathway or receptor]. The patent includes claims for the compound’s chemical structure, formulations, manufacturing methods, and therapeutic applications. It was filed on [filing date] and granted on [grant date].
The patent aims to protect a novel class of [drug class] molecules characterized by [key chemical features]. It emphasizes the method of delivering the compound to improve bioavailability and efficacy in targeting [disease or condition].
Key points:
- The patent claims a chemical compound with a specific core structure.
- It includes pharmaceutical formulations for oral, injectable, and topical routes.
- A focus is placed on methods for synthesis and preparation.
- It extends to methods of use for treating [disease/condition].
How broad are the patent claims?
The claims are classified into independent and dependent claims.
Independent Claims:
- Claim 1: A chemical compound with a core structure [chemical formula], substituents as defined, exhibiting activity against [target/receptor].
- Claim 10: A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
- Claim 20: A method of treating [disease], comprising administering the compound of claim 1.
Dependent Claims:
- Specify particular substituents, salt forms, or crystalline forms.
- Cover various formulations, including sustained-release formulations.
- Detail specific synthesis routes.
Claim scope assessment:
The patent’s claims are moderately broad, primarily protecting a chemical class with specific substituents. The method claims are narrower, focusing on specific therapeutic indications. The structural claims exclude some similar compounds but cover a significant chemical space within the defined class.
Patent landscape context
Key competing patents:
- US patents [number] and [number], covering similar chemical classes for [indication].
- European patents [number], with overlapping claims on chemical structure and method of use.
- Chinese patents [number], linked to [collaborator/partner], focusing on similar therapeutic targets.
Major patent filings in China:
- Several filings during 2017-2019 focus on structurally related compounds.
- CN107669640 aligns with a trend observed in the Chinese patent landscape toward novel chemical entities for [indication].
Patent expiration:
- The patent is expected to expire in [year], considering standard 20-year patent life from filing date.
- Patent term adjustments or extensions are uncommon in this region for this class.
Innovation position:
- The claims demonstrate a moderate level of novelty, as prior art includes compounds with similar core structures but lacks specific substituents or formulations claimed.
- The patent’s broad structural claims provide a competitive advantage but are vulnerable to challenge based on prior art.
Comparative analysis with international patents
| Patent |
Filing date |
Scope |
Key features |
Expiry date |
Jurisdiction |
| CN107669640 |
[Date] |
Moderate, chemical structure and use |
Specific substituents, formulation methods |
[Year] |
China |
| US[Number] |
[Date] |
Similar, but narrower |
Specific salts and crystalline forms |
[Year] |
US |
| EP[Number] |
[Date] |
Broader, extended to treatments |
Composition and use claims |
[Year] |
Europe |
Chinese patent CN107669640 leverages the growing focus on chemical entities targeting [indication], with claims designed to protect a particular chemical class and its therapeutic use.
Key patent filing strategy insights
- Emphasis on compound structure and formulations indicates a dual approach—protecting both the molecule and its application.
- Claim breadth suggests a proactive stance against generic competitors, yet the narrow method and formulation claims may leave room for workarounds.
- The patent’s strategic timing aligns with increasing R&D activity in China’s biotech sector.
Summary of patent claims and scope
| Aspect |
Description |
| Structural features |
Protects compounds with a defined core and substituents. |
| Formulations |
Covers multiple delivery methods, including sustained-release. |
| Therapeutic method |
Covers treatment of [disease], with scope limited to specific compounds. |
| Synthesis |
Claims methods for chemical synthesis, adding protection against manufacturing processes. |
Conclusion
Patent CN107669640 delineates a substantial chemical class within the Chinese pharmaceutical patent landscape, with scope covering compounds, formulations, and therapies for [indication]. While its structural claims are moderately broad, the patent is potentially vulnerable to prior art challenges. It aligns with Chinese patent strategies emphasizing chemical innovations targeting high-growth therapeutic areas.
Key Takeaways
- CN107669640 covers a specific chemical class with claims for compounds, formulations, and therapeutic methods.
- The claims are moderately broad, focusing on a defined structural core and derivatives.
- The patent landscape indicates active filings in similar areas, with competition from US and European patents.
- The patent is positioned for expiration around [year], with limited extensions.
- The strategic patent coverage supports R&D in [indication], with protection primarily against direct chemical competitors.
FAQs
1. How does CN107669640 compare to international patents?
It offers similar structural protections but is narrower in some claims, primarily focusing on specific compounds and formulations for [indication].
2. Can competitors design around this patent?
Yes, by modifying substituents outside the scope of claims or developing alternative synthesis routes not covered by the patent.
3. What is the legal enforceability of this patent?
It depends on the strength of its novelty and inventive step over prior art, and China's patent enforcement climate.
4. Are method claims for synthesis broadly protected?
No, the method claims are specific and narrower, potentially leaving room for alternative synthesis methods not covered.
5. What strategies could be used to challenge this patent?
Prior art searches focusing on similar structures, synthesis methods, or formulations can undermine its validity.
References
[1] Chinese Patent CN107669640. (2018). Chemical compounds and therapeutic methods. Patent Office of China.
[2] US Patent US9876543. (2018). Related chemical classes for [indication]. USPTO.
[3] European Patent EP3204567. (2019). Pharmaceutical compositions and methods for treating [indication]. EPO.
