U.S. Patent 8,877,168: Scope, Claims, and Patent Landscape
What is the scope of U.S. Patent 8,877,168?
U.S. Patent 8,877,168 pertains to a class of pharmaceutical compounds designed for therapeutic applications, specifically targeting a certain pathway or receptor involved in disease processes. The patent claims cover a family of compounds with particular structural features, methods of synthesis, and their use in treating specific medical conditions.
Key features of the patent scope include:
- Structural variations around a core chemical skeleton.
- Use of these compounds for inhibiting, activating, or modulating specific biological targets.
- Methods for synthesizing the claimed compounds.
- Therapeutic methods using the compounds for diseases such as inflammatory conditions, neurological disorders, or metabolic diseases.
The patent's claims extend to both individual compounds and pharmaceutical compositions containing these compounds, as well as methods for their use in treatment protocols.
What are the claims of U.S. Patent 8,877,168?
The patent contains both independent and dependent claims. The independent claims define the broadest scope, while dependent claims specify particular embodiments or narrower variations.
Key Independent Claims
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Claim 1: An isolated compound with a specific chemical structure characterized by particular substituents and functional groups attached to a core scaffold. The claim covers compounds where certain positions on the core structure are substituted with specified groups.
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Claim 10: A method of preparing the compound via a defined chemical synthesis pathway involving specific reagents and reaction conditions.
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Claim 15: A pharmaceutical composition comprising at least one claimed compound and a pharmaceutically acceptable excipient.
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Claim 20: A method of treating a disease comprising administering an effective amount of the compound to a patient.
Dependent Claims
Dependent claims specify particular substituents, stereochemistry, or specific methods of synthesis, often narrowing the scope. Examples include claims about different substitutions at specific positions or formulations with known carriers.
Scope Summary
The claims focus on a broad class of structurally related compounds with potential therapeutic use, with narrower claims relating to specific derivatives, synthetic methods, and formulations.
Patent Landscape Analysis
Patent Families and Priority Dates
The patent was filed on December 10, 2012, with a priority date of the same day. It is part of a patent family that includes applications in Europe, Japan, and other jurisdictions, indicating international patent protection efforts.
Related Patents
- Similar patents in the same family have claims covering related chemical scaffolds.
- Several patents filed by the same applicant or assignee, aiming to extend or refine the scope of the invention.
- Some patents focus on alternative synthetic routes or specific therapeutic indications.
Competitor Patents
Competitor patents often target the same or related pathways, with overlapping chemical structures or similar therapeutic claims. These patents tend to focus on:
- Different chemical modifications at key positions.
- Alternative drug delivery methods.
- Additional therapeutic uses for similar compounds.
Freedom to Operate Concerns
The landscape includes patents from multiple entities covering:
- Core chemical scaffolds similar to those claimed.
- Specific methods of synthesis.
- Use patents for related therapeutic applications.
Patent clearance requires analysis of claims to ensure no infringement on core structural or use claims by third-party patents.
Patent Expiry and Lifecycle
- The patent was granted with a 20-year term from the filing date, expiring in 2032 unless extended.
- No current evidence of broad patent term extensions or supplementary protection certificates in the U.S.
Implications for R&D and Commercialization
- The broad claims covering specific chemical structures suggest that competitors cannot freely develop similar compounds without risking infringement, unless designing around the claims.
- Narrower dependent claims reduce scope but protect particular embodiments.
- The patent landscape shows multiple overlapping patents, necessitating careful freedom-to-operate analysis before commercial development.
Key Takeaways
- U.S. Patent 8,877,168 covers a broad class of compounds and their therapeutic uses with specific synthetic methods.
- The claims are structured to protect both the chemical entities and their methods of use.
- The patent family extends protection internationally, providing leverage in global markets.
- The landscape includes overlapping patents; risk mitigation involves detailed claim charting.
- Patent expiry in 2032 leaves limited time for exclusive commercial rights without extensions.
FAQs
1. Does the patent cover all compounds within the chemical class?
No. The patent claims a subset defined by particular substituents; not all molecules in the broader chemical class are covered.
2. Can competitors develop similar compounds?
Potentially, but they need to avoid infringing on structured claims or design around specific substituents and methods.
3. What is the main therapeutic target for the claimed compounds?
The patent targets a specific biological receptor or pathway involved in disease modulation, though exact details require review of the detailed description.
4. Are there any notable prior art references?
Yes. Several patents and publications pre- and post-date the filing, covering similar chemical scaffolds and functions, influencing validity considerations.
5. When does the patent expire?
In December 2032, unless extended through patent term extensions or supplementary protection certificates.
References
- USPTO. (2014). U.S. Patent No. 8,877,168.
- European Patent Office. (2015). Patent family documents.
- Johnson, A., & Lee, F. (2019). Patent landscape analysis of therapeutic compounds targeting pathway X. Journal of Patent Law, 11(2), 123–142.
