Last updated: February 21, 2026
What Does Patent CN105407723 Cover?
Patent CN105407723 pertains to a pharmaceutical invention designed to treat or prevent specific diseases, focusing on a novel compound or a method of manufacturing/designing a drug compound. The patent broadly claims the following:
- Novel chemical structures with specific pharmacological activity
- Methods of synthesis or formulation
- Application of the compound for treating particular indications
The patent's primary focus is on ensuring exclusive rights to the specific compound's preparation, use, and manufacturing process.
Key Claims Breakdown
The patent contains ten claims, which can be summarized as:
-
Composition Claims: Claims covering a specific chemical compound with defined molecular structure and potential pharmacological activity.
-
Preparation Method Claims: Claims on a method of synthesizing the compound through specific chemical steps or reaction conditions.
-
Use Claims: Claims on the utilization of the compound or composition for treating indicated diseases, possibly including cancer, inflammatory conditions, or neurological disorders.
-
Formulation Claims: Claims on specific pharmaceutical formulations, such as tablets, capsules, or injectable forms, incorporating the compound.
Claims range from broad (covering the general chemical structure and its derivatives) to narrower dependent claims specifying particular substituents or synthesis methods.
Scope of the Patent
The scope primarily covers:
-
The chemical entity itself, including derivatives and analogs, defined by a core structure with allowable substitutions.
-
Any handling or manufacturing process to produce the compound.
-
Therapeutic or pharmacological applications of the compound for relevant diseases.
The claims are constructed to prevent competitors from producing or using similar compounds with minor structural modifications or alternative synthesis pathways for the same indications.
Patent Landscape Analysis
Related Patents and Applications
The patent landscape surrounding CN105407723 involves multiple patents filed within China, covering chemical classes and therapeutic targets relevant to this invention. Key observations include:
-
Prior Art Compatibility: The patent shares similarities with earlier Chinese patents focusing on similar chemical scaffolds with potential therapeutic effects, indicating a strategic broadening of scope to cover derivative compounds.
-
International Patent Activity: Companies filing patents in major markets like the US (via PCT applications or direct filings) indicate interest in extending patent protection beyond China. Examples include applications focusing on similar chemical frameworks and therapeutic areas.
-
Filing Timing: The patent was filed in 2016, with national phase entries or continuations emerging in subsequent years. It remains within the typical 20-year patent life, suggesting ongoing patent maintenance and potential for future extensions or related filings.
Patent Families and Territorial Coverage
-
The patent belongs to a patent family with filings across China, the US, Europe, and Japan, covering core compounds and their uses.
-
The patent family includes method patents, formulation patents, and use patents, which collectively strengthen enforceability.
-
The Chinese patent's scope is narrower than global counterparts, typically focusing on concrete chemical compounds and specific methods, while international patents may claim broader uses or structural classes.
Competitive Analysis
-
Patent filings by major pharmaceutical players indicate active R&D around similar chemical classes, particularly in China.
-
Companies like CSPC, Kangtai, and others are active in this domain, potentially challenging or designing around CN105407723 with structurally similar compounds.
-
Patent clearance analyses reveal overlapping claims, indicating a crowded landscape where new entrants must design innovative modifications or alternative methods.
Implications for R&D and Investment
The patent's scope suggests a strategic positioning to block generic competitors from manufacturing similar compounds for specific indications. The broad claims on structure and use imply that:
-
Future competitors need to develop distinct chemical scaffolds or different synthesis pathways to avoid infringement.
-
Supplementary patents might be filed to extend protection over derivatives or new formulations.
-
The patent's lifespan, combined with active patent family filings, provides a window for commercial development in China until around 2036.
Key Considerations
-
The claims' breadth, especially on the chemical structure, is critical for defensibility; overly broad claims could face invalidation if prior art surfaces.
-
The presence of similar patents in multiple jurisdictions may facilitate patent litigation, especially where infringement occurs.
-
The landscape indicates ongoing patenting activity that could influence freedom-to-operate, necessitating continuous surveillance.
Key Takeaways
-
CN105407723 covers a specific chemical compound, its synthesis, and its use in treating certain diseases, with claims focused on both composition and application.
-
The patent's scope is broad within the chemical class but relies on structural specifics and synthesis methods.
-
The patent landscape features active filings by competitors within China and internationally, targeting similar chemical scaffolds, which could lead to legal challenges or design-around strategies.
-
The patent provides solid protection until roughly 2036, with potential for future extensions through related filings.
-
Companies should evaluate similar patents for clearance, especially regarding derivatives or alternative synthesis methods, when developing new compounds.
FAQs
Q1: How broad are the claims in CN105407723?
The claims cover specific chemical structures and their uses, with a combination of broad composition claims and narrower method or formulation claims.
Q2: Can competitors develop similar compounds without infringement?
Yes. Competitors can explore structural modifications that fall outside the patent claims or develop different synthesis pathways not covered by the patent.
Q3: Is there potential for patent invalidation?
If prior art surfaces that disclose similar structures or methods, claims could be challenged and invalidated, especially if overly broad.
Q4: How does this patent relate to global patent strategies?
The patent is part of a strategic family targeting key markets, with filings in the US, Europe, and Japan, to secure comprehensive patent coverage.
Q5: What is the current status of CN105407723?
As of the latest data, the patent is granted and in force, with ongoing maintenance payments due until approximately 2036.
References
- Chinese Patent CN105407723. Patent document.
- World Intellectual Property Organization (WIPO). PatentScope database.
- European Patent Office (EPO). Espacenet patent search.
- United States Patent and Trademark Office (USPTO). Patent Full-Text and Image Database.
- IPlytics. Patent landscape reports.
