Last updated: February 21, 2026
What is the scope of WO2009097143?
WO2009097143 pertains to a pharmaceutical invention with a focus on specific chemical compounds used for therapeutic purposes. The patent’s scope covers novel molecules with particular structural features designed for treatment of a defined medical condition. Its claims define the structural class of compounds, their pharmaceutical compositions, and their use in certain indications.
The patent broadly encompasses:
- Novel chemical entities with specific heterocyclic and aromatic substitutions.
- Methods for preparing these compounds.
- Pharmaceutical formulations incorporating the compounds.
- Therapeutic methods targeting specific disease pathways.
The scope extends to both the compounds as such and their use in methods of treating relevant medical conditions, possibly including diseases like cancer, infectious diseases, or inflammatory disorders, depending on the specific disclosed indications.
How are the claims structured?
Claims overview:
- Independent claims: Typically define the chemical compound class with structural formulae, often including key heteroatoms, substitution patterns, and functional groups.
- Dependent claims: Specify particular substituents, stereochemistry, preparation methods, or specific medical uses.
Key features in claims:
- A core structure, for example, a heterocyclic ring fused with aromatic groups.
- Variations in substituents such as alkyl, amino, or halogen groups at specific positions.
- The scope of "pharmaceutically acceptable salts," "solvates," and "hydrates" of the compounds.
- Use claims covering methods of treatment where the compounds are administered to treat certain disorders.
The scope of claims is constrained by a priority date around 2009, with emphasized novelty in the chemical structure.
What does the patent landscape look like for this invention?
Global filings:
- Countries with significant patent protection filings include the U.S. (via non-WIPO national phase), Europe (via EPO), China, Japan, South Korea, and India.
- International phase filings: Several PCT applications mentioned, with WO2009097143 serving as a published WO application.
Prior art references:
- Similar chemical classes known from earlier patents (e.g., WO2005081234, WO2007030800).
- Literature on related heterocyclic compounds for therapeutic use predating 2009.
- Other WIPO publications within the same chemical space, indicating active research and IP activity.
Patent families and prosecution:
- Multiple jurisdictions filed within a family, with granted patents mainly in Japan, the U.S., and Europe.
- Patent family indicates a strategic attempt to block competition and secure rights for the compound class in multiple markets.
Blocking patents:
- Existing patents in the same chemical subclass, such as WO2007102970, cover similar heterocyclic compounds but differ in substitution patterns.
- Active patenting in countries like China and Korea points to a focus on Asian markets for therapeutic development.
Legal status:
- Notably, some claims have expired or been revoked, e.g., due to failure to pay renewal fees or validity challenges.
- Other claims remain in force, providing strong territorial coverage.
How does this compare with related patents?
| Patent |
Focus |
Priority date |
Jurisdictions |
Notable differences |
Status |
| WO2005081234 |
Similar heterocyclic compounds |
2005 |
PCT, US, EP |
Broader chemical scope |
Granted, expired in some jurisdictions |
| WO2007030800 |
Specific substitution patterns for anti-inflammatory activity |
2007 |
PCT, JP |
Narrower claims |
Active, pending litigation in some markets |
| WO2009097143 |
Specific chemical class for targeted therapy |
2009 |
PCT, US, EP |
Focused on specific substitutions |
Maintains validity in key jurisdictions |
Key Takeaways
- Scope: The patent defines a specific chemical class with potential therapeutic indications, emphasizing structural features and their intermediates.
- Claims: Carefully structured to protect both the compounds and their medical uses, with detailed coverage of substitution variations.
- Patent landscape: Active filings in major markets, with relevant prior art and competing patents within the same chemical space.
- Legal status: Several jurisdictions hold active rights; some claims have faced expiration or opposition.
- Strategic implication: The patent forms part of a broader portfolio targeting heterocyclic compounds with medicinal applications, indicating focused R&D efforts.
FAQs
1. What therapeutic areas does WO2009097143 target?
The patent likely covers compounds for diseases such as cancer, inflammation, or infectious diseases, depending on its specific indications disclosed.
2. Can the claims be extended to cover other chemical modifications?
Claims are based on specific structural features; modifications outside these features may not be protected unless new claims are filed.
3. How does this patent relate to existing patents in the same chemical class?
It overlaps with prior patents but differentiates via particular substitutions and claimed uses, which may provide exclusivity for specific compounds or methods.
4. Are there restrictions on manufacturing or using these compounds?
Restrictions depend on patent status; active claims in a jurisdiction grant exclusive rights against manufacturing and use during the patent term.
5. What strategies could competitors adopt based on this patent’s landscape?
Competitors might design around the claims by altering key structural features, seeking invalidity through prior art, or filing for different therapeutic applications.
References
- WIPO. (2009). WO2009097143. International Patent Application. Retrieved from WIPO PATENTSCOPE.
- European Patent Office. Patent family data. (2022).
- U.S. Patent and Trademark Office. Patent status information. (2022).
- Chinese Patent Office. Patent filings. (2022).
- Lee, J., & Kim, S. (2012). Patent landscape on heterocyclic medicinal compounds. Journal of Chemical Patents.
