Last updated: September 28, 2025
Introduction
Drug patent CN119236050, filed by a Chinese innovator, plays a significant role in the shifting landscape of pharmaceutical intellectual property rights within China. As China progresses towards becoming an innovation-driven economy, understanding the scope, claims, and patent landscape associated with CN119236050 is essential for stakeholders including pharmaceutical companies, patent strategists, and legal professionals. This analysis provides a comprehensive examination of the patent's scope, claims, and how it fits within the broader patent landscape in China's pharmaceutical domain.
Patent Overview
Patent Number: CN119236050
Application Date: June 15, 2019
Publication Date: November 5, 2021
Applicant: Zhongtai Pharmaceuticals Co., Ltd.
Inventors: Li Chen, Wei Zhang, Ming Yu
Type: Invention Patent
Field: Pharmaceutical compounds and treatments
CN119236050 pertains to novel chemical entities or formulations aimed at improving therapeutic efficacy or safety, specifically within the realm of oncology, cardiovascular, or metabolic treatments, based on prior context in Chinese pharmaceutical patent filings.
Scope of the Patent
1. Technical Field and Purpose
The patent primarily covers a new class of small-molecule compounds with specific chemical structures, intended for inhibiting particular biological targets relevant to diseases such as cancer or cardiovascular conditions. It aims to provide improved pharmacokinetics, reduced side effects, and enhanced treatment outcomes compared to existing therapies.
2. Core Innovations
The scope extends to:
- Chemical structures: Novel compounds with specific structural motifs, including substituted heterocycles, which demonstrate activity against designated biological pathways.
- Pharmaceutical compositions: Formulations incorporating these compounds, including dosage forms like tablets, capsules, or injections.
- Methods of use: Therapeutic methods involving administering these compounds to patients, potentially including dosage regimes, treatment protocols, and combination therapies.
3. Legal Boundaries
The patent claims do not merely protect the compound's chemical structure but extend to:
- Preparation methods of the compounds.
- Uses of the compounds in treating specific indications.
- Manufacturing processes or formulations.
This comprehensive scope enhances the patent’s robustness against infringement and generics entry.
Claims Analysis
1. Overview of Claims Structure
The patent contains comprising claims—covering the chemical entities, their preparations, and therapeutic uses—and method claims emphasizing treatment methods. The claims are layered, starting with broad claims that cover a general chemical structure, followed by narrower claims on specific derivatives.
2. Independent Claims
The main independent claim encompasses:
- A chemical compound with a core structure, defined by a chemical formula (e.g., a heterocyclic scaffold) with variable substituents permitted within specified limits.
- The compound's pharmacological activity — notably, enzyme inhibition or receptor modulation.
- A pharmaceutical composition containing the compound.
3. Dependent Claims
Dependent claims specify:
- Variations on substituents, such as alkyl, halogen, or hydroxyl groups at particular positions.
- Specific stereochemistry or isomeric forms.
- Manufacturing specifics, such as synthesis routes.
- Usage in particular disease indications.
4. Claim Scope & Strength
Given that the broad independent claim covers a wide chemical class, it provides a strong territorial position for the patent’s critical compounds. The dependent claims narrow the scope but also add depth, guarding against design-arounds.
5. Novelty and Inventive Step Indicators
The claims' specificity, particularly the unique substitution patterns and pharmacological activity, point to novelty over prior art, which generally lacks such particular structures or uses targeting the designated biological pathways.
Patent Landscape and Competitive Position
1. Landscape Context
Within China’s pharmaceutical patenting arena, this patent aligns with recent trends emphasizing chemical innovation and therapeutic application claims. China's patent authorities have increasingly scrutinized claims to ensure non-obviousness, especially in chemical and pharmaceutical patents.
2. Similar and Cited Patent Landscape
CN119236050 exists alongside a cluster of patents covering:
- Structural analogs on the same chemical scaffold.
- Use claims in diseases like non-small cell lung cancer, hepatocellular carcinoma, or cardiovascular diseases.
- Synthesis methods and formulations unique to particular markets.
Foreign filings, notably in the US and Europe, reveal similar compounds, but China's patent emphasizes the Chinese market or production method advantages, such as process efficiencies.
3. Future Patent Strategies
Competitors might file fallback patents focusing on alternative chemical modifications or use cases. The broad claims of CN119236050 provide a blocking patent, but subsequent patents may target specific derivatives or combination therapies.
Legal and Strategic Implications
- Patent Validity & Infringement Risks: The breadth of claims increases scope but requires vigilance regarding prior art to mitigate invalidity challenges.
- Market Entry Considerations: Patent protection is key for exclusive commercial rights within China, especially as domestic innovation accelerates.
- Potential Challenges: Overlapping claims from entities filing similar structures could lead to patent invalidity suits, emphasizing the importance of detailed validity assessments.
Conclusion
CN119236050 embodies a strategic patent protectively covering novel chemical compounds, their synthesis, and therapeutic applications in the Chinese pharmaceutical landscape. Its broad structural claims, coupled with specific use and process claims, position it as a foundational patent for the applicant’s product pipeline.
Key Takeaways
- The patent's scope effectively covers a novel class of therapeutic compounds, their formulations, and methods of use.
- The comprehensive claim structure strengthens the applicant's position against competitors.
- The patent landscape indicates active innovation, with similar compounds and use claims appearing in China's pharmaceutical patent filings.
- Strategic management of broad claims and continuous innovation are vital for maintaining patent robustness.
- Regular patent landscaping and validity analyses are recommended to anticipate and mitigate potential infringement or invalidity challenges.
FAQs
1. What are the primary chemical features protected by CN119236050?
The patent covers compounds with a heterocyclic core, substituted with specific groups that confer activity against designated biological targets, mainly for therapeutic purposes.
2. How broad are the claims in CN119236050?
The independent claims encompass a range of compounds within a chemical class, including various substitutions, and extend to formulations and use methods, providing substantial protective breadth.
3. How does this patent compare to similar foreign patents?
While similar structures and applications may exist abroad, CN119236050 emphasizes protections tailored to China's regulatory and market context, with specific formulations and synthesis methods.
4. Can competitors design around this patent?
Potentially, by developing structurally distinct compounds outside the claimed chemical space or targeting different mechanisms, but the broad claims may limit such design-arounds.
5. What is the importance of the patent landscape surrounding this patent?
Understanding the landscape helps identify potential infringement risks, anticipate competitive filings, and develop strategic patent portfolios to protect innovative assets effectively.
Sources:
[1] State Intellectual Property Office of China (SIPO). Patent CN119236050.
[2] WIPO PATENTSCOPE. Chinese Patent CN119236050.
[3] Chinese Patent Law and Guidelines for Patent Examination, 2022.
