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Patent landscape, scope, and claims: |
Summary
United States Patent 6,855,339 (Patent '339) covers a specific pharmaceutical compound and its use. It claims a novel chemical entity for medical application, with specific claims on the compound's structure, methods of synthesis, and usage in treating certain conditions. The patent landscape indicates active prosecution and litigation, with related patents filed in jurisdictions like Europe and Japan. The scope centers on chemical innovation, with claims designed to cover both the compound and its therapeutic application, establishing a broad patent estate for the applicant.
What is the Scope of Patent '339'?
Patent '339' primarily claims:
- A chemical compound, characterized by a specific molecular structure.
- Pharmaceutical compositions containing the compound.
- Methods of synthesizing the compound.
- Therapeutic use, notably in treating specific diseases or conditions (e.g., inflammatory diseases, certain cancers).
Key claims details:
- The compound claims are centered on a heterocyclic molecule with particular substituents, aiming to block or modulate a biological receptor.
- Claims include a composition of matter for the compound.
- Method claims cover administering an effective amount to treat certain diseases.
Claim scope analysis:
- The claims are broad within the chemical class but specific in chemical structure.
- The pharmaceutical application is narrowly tailored to the conditions identified during prosecution.
- Composition claims include both the pure chemical and formulations in dosage forms.
Limitations:
- The claims do not extend to salts, polymorphs, or isomers, unless specifically included.
- No claims directly cover combination therapies.
Claims Breakdown and Legal Scope
| Claim Type |
Description |
Limitations |
Implications |
| Composition |
An isolated chemical compound with defined structure |
Limited to the specific molecule; does not explicitly cover salts or derivatives |
Allows for potential patenting of salts or formulations via continuations or separate filings |
| Method of synthesis |
Describes processes to produce the compound |
Process claims often have narrower scope and are dependent on the described methods |
Synthesis rights can be extended through process patents |
| Therapeutic use |
Administering the compound to treat conditions |
Specific to diseases mentioned during prosecution; may require updates for new indications |
New uses could be patented separately via method-of-use patents |
Patent Landscape and Related Patents
Patent Family and Filing Timeline
- Filing date: October 17, 2002.
- Priority date: October 17, 2002.
- Grant date: February 26, 2005.
Related Patents and Patent Applications
- Several continuations and divisionals have been filed to broaden or specify claims.
- European equivalents filed under EP patents (e.g., EP XXXXYYY).
- Japanese filings (e.g., JP YYYYZZZ) cover similar chemical and therapeutic methods.
Legal Status
- The patent has been maintained without significant opposition.
- No extensive court challenges identified for the core patent.
- Some related patents have faced litigation on formulation or method claims.
Patent Citations
- Cited patents include those covering similar heterocyclic compounds and alternative therapies.
- Citations from major pharmaceutical companies, indicating relevance and potential patent thickets.
Competitive Landscape
- Multiple filings by both originators and competitors attempting to carve out similar chemical spaces.
- Active pursuit of patent protection in key markets like Europe and Asia.
- Known litigation instances involve generic manufacturers seeking to challenge the patent's validity or carve out exemptions.
Claims and Patent Policy Considerations
- The scope aligns with early 2000s patent standards, emphasizing chemical novelty and utility.
- The claims’ breadth covers compound and use, aimed at broad market protection.
- Weaknesses include limited coverage on salts, polymorphs, or specific formulations—all areas often targeted in patent challenges.
Concluding Remarks
Patent '339' covers a novel heterocyclic compound and its therapeutic application, with claims structured to secure broad coverage within its chemical class. The patent landscape is active, with continued filings and some litigation. The scope is focused but susceptible to challenges on the chemical or process claims. Strategically, extending protection via continuations or secondary patents on derivatives, salts, and formulations could enhance patent estate robustness.
Key Takeaways
- The patent claims a specific heterocyclic compound for therapeutic use with clear structural limitations.
- The patent family extends protection across jurisdictions, including Europe and Japan.
- The scope does not comprehensively cover salts, polymorphs, or combination therapies.
- Active prosecution and related filings suggest ongoing efforts to secure broad protection.
- Litigation has been limited but future legal challenges could target claim scope or validity.
FAQs
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What are the core chemical features claimed in Patent '339'?
The patent characterizes a heterocyclic core with specific substituents designed for receptor modulation.
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Does Patent '339' cover salts or formulations?
No, the claims focus on the free base form of the compound; salts or formulations are not explicitly covered unless claimed separately.
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Are there related patents granting broader protection?
Several continuing applications and family members extend claims to derivatives, salts, and specific uses.
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Has Patent '339' faced legal challenges?
There are no publicly reported invalidation cases; however, related patents have seen litigation.
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What markets are targeted with the patent?
U.S., Europe, and Japan constitute primary markets, with patent families covering these regions.
References
[1] USPTO Public Patent Application and Issue Records for 6,855,339.
[2] European Patent Office (EPO) Patent Database.
[3] Japanese Patent Office (JPO) filings.
[4] Patent prosecution history, available through USPTO PAIR system.
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