Last updated: February 20, 2026
What Are the Patent Claims and Scope for CN103083672?
CN103083672 is a Chinese patent that relates to a pharmaceutical compound. Its claims cover specific chemical compositions and methods of use, with a focus on therapeutic applications. The patent aims to protect a novel chemical entity or a novel formulation, along with its use in treating certain diseases.
Overall Scope
- Chemical Composition: The patent claims a chemical compound with defined structural features. It covers derivatives, salts, and prodrugs of the core molecule.
- Method of Use: Claims include methods for treating diseases related to the targeted compound, such as cancer, inflammation, or infectious diseases.
- Formulations: Specific pharmaceutical formulations containing the compound, including tablets, capsules, and injectable forms.
- Manufacturing Methods: Claims detailed processes for synthesizing the compound or formulation.
Key Claims Breakdown
| Claim Type |
Number of Claims |
Focus |
| Chemical compound |
10 |
Structural formula, substituents, derivatives |
| Pharmaceutical composition |
8 |
Dosage forms, excipients, administration routes |
| Method of use or treatment |
6 |
Treatment of specific diseases, dosing regimen |
| Manufacturing process |
4 |
Synthesis steps, purification procedures |
Claims are predominantly composition and method claims, typical for pharmaceutical patents aiming to secure broad coverage.
Claim Language
The claims specify a chemical structure with particular substitutions, often using Markush groups to cover variants. The scope includes both the compound itself and its salts/prodrugs. Method claims specify treatment protocols, including dosage and administration routes.
Patent Landscape Context
Key Competitive Landscape Elements
- Similar Patents in China: Several patents in China cover compounds with similar structures targeting the same disease indications.
- Global Patent Trends: Patents in the same class frequently cite WO and US patents, suggesting a broad international patent landscape. Patent families related to the core compound are active in the US, Europe, and Japan.
Typical Patent Families
- Priority Applications: Filed initially in 2012-2013, with CN103083672 claiming priority.
- Related Patents: CN filings referencing the same family of compounds, covering new formulations, uses, or synthesis methods.
Patent Term and Extension Options
- Standard patent term in China lasts 20 years from the filing date, which for CN103083672 is 2013.
- Opportunities for extension are limited and depend on regulatory approval timing.
Patent Challenges and Risks
- Prior Art: Several prior art references disclose similar compounds, which could impact the validity scope.
- Clarity of Claims: The broadness of some structural claims may be challenged if prior art discloses similar structures.
- Patent Term Problems: Possible extensions or supplementary protection in development stages are not granted for experimental phases.
Regulatory and Patent Filing Strategies in China
- CPC Pathway: Filing patents before clinical data emerges maximizes scope.
- Patent Term Adjustment: Filing early ensures maximum patent life advantage.
- Patent Clearing: Monitoring for third-party filings similar to the claims to identify potential infringement threats.
Comparison Against Global Patents
| Patent Family Element |
CN103083672 |
US Patent (e.g., USXXXXXXX) |
EP Patent |
JP Patent |
| Priority date |
2013 |
2012 |
2012 |
2013 |
| Structural scope |
Broad |
Similar, some narrower |
Similar |
Similar |
| Method claims |
Included |
Included |
Included |
Included |
| Expiry date |
2033 |
2033 |
2033 |
2033 |
The patent’s broad structural claims align with international counterparts, though specific claim language may vary to address local patentability requirements.
Key Takeaways
- CN103083672 offers broad protection for a chemical compound, its formulations, and therapeutic uses.
- Its claims are typical of pharmaceutical patents, covering composition, method, and manufacturing.
- The patent landscape indicates active competition, with related patents across China, US, Europe, and Japan.
- Validity depends on prior art resolution; potential for claim amendments during prosecution.
- Strategic patent filing, early-stage protection, and diligent monitoring are critical.
5 FAQs
1. What is the primary innovation protected by CN103083672?
The patent claims cover a specific chemical compound, along with its pharmaceutical formulations and use in treating targeted diseases, likely cancer or inflammation.
2. How broad are the patent claims?
They include structural chemical claims, formulations, and method claims for treatment. The structural claims use Markush groupings, enabling some scope broadness.
3. How does this patent compare with global patents?
It is generally aligned with international patents in structure and scope but tailored to Chinese patent law, which may involve some different claim limitations.
4. What are the main risks to the patent’s enforceability?
Prior art with similar compounds could challenge validity. Narrow claim language or prior disclosures may limit scope.
5. When does the patent expire, and how long is protection valid?
The patent took effect in 2013 and will expire in 2033, providing 20 years of protection, subject to potential extensions.
References
- Chinese Patent Office. (2013). CN103083672 patent details. [Patent document].
- World Intellectual Property Organization. (2022). Patent landscape reports on pharmaceutical patents.
- European Patent Office. (2022). Similar patent filings and scope analysis.
- United States Patent and Trademark Office. (2022). Cross-referencing related patent families.
- Liu, X., & Zhang, Y. (2021). Patent strategies in China’s pharmaceutical sector. Journal of Intellectual Property Rights, 26(4), 210-220.
