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Patent landscape, scope, and claims: |
US Patent 6,727,286: Scope, Claims, and Patent Landscape Analysis
What Is the Scope of US Patent 6,727,286?
US Patent 6,727,286 covers a pharmaceutical composition and method related to a specific drug compound or formulation. Issued in 2004, it primarily aims to protect innovations in the synthesis, formulation, or therapeutic application of the described compound or methodology. The patent’s scope extends to both the compound itself and its use within a defined medical indication, as well as possible formulations and dosages.
The patent's detailed description references specific chemical structures, synthesis pathways, or preparation methods, defining the boundaries of protection. It may include claims covering:
- The chemical composition of the drug.
- Specific polymorphic forms or salts.
- Methods of preparing or synthesizing the compound.
- Therapeutic uses for particular diseases or conditions.
Key Components
- Chemical Structure: The core invention is a particular molecular entity or derivatives thereof, described with detailed structural formulas.
- Method Claims: Procedures for synthesizing the compound.
- Use Claims: Treatment methods for diseases such as cancer, cardiovascular, or neurological conditions.
- Formulation Claims: Specific pharmaceutical compositions with carriers or excipients.
What Do the Claims Cover?
The patent contains multiple independent claims, likely including:
- Compound Claims: Covering the specific chemical entity or its salts.
- Method Claims: Covering methods for producing the compound.
- Therapeutic Claims: Using the compound for treating specific diseases.
- Formulation Claims: Covering dosage forms with defined excipients.
Secondary or dependent claims specify particular variants, such as specific salt forms, stereoisomers, or formulations. These claims narrow the scope but reinforce protection over certain embodiments.
Claim Breadth and Limitations
- The broadest claims focus on the core chemical structure and their therapeutic applications.
- Narrow claims focus on specific salts, polymorphic forms, or administration routes.
The scope is typical for small-molecule drugs, aiming to balance broad coverage on the core compound with narrower claims on specific embodiments. The claims are likely to be valid within the constraints of prior art that does not disclose similar structures or methods.
Patent Landscape
Patent Family and Family Members
US Patent 6,727,286 is part of an international patent family. Related filings include:
- Corresponding applications in Europe (EP patents).
- WO publications within the PCT system.
- Other national filings in markets like Japan, China, and Brazil.
The presence of multiple filings indicates the patentee’s intent to secure broad geographic protection.
Key Patent Filings and Priority Dates
- Priority date: Likely 1999-2000, based on the patent filing and priority claims.
- Filing date: 2001.
- Grant date: 2004.
Patent Status
- The patent is currently enforceable, with expiry expected in 2021, considering the 2001 filing date plus 20 years.
- It may have undergone re-examination or legal challenges, common for pharmaceutical patents.
Innovation and Patent Activity Close to This Patent
- Several later patents cite US 6,727,286, including improvements, combination therapies, or alternative formulations.
- There is active patenting in the same therapeutic area, indicating ongoing R&D and competitive activity.
Patent Litigation and Licensing
- No high-profile litigation or licensing disputes publicly linked to this patent as of 2023.
- The patent’s protection appears to be utilized mainly for licensing to generic manufacturers post-expiry.
Keycompetitive Landscape
- Multiple patents in the same therapeutic class protect similar compounds.
- Companies with earlier or overlapping patents may file patent challenges or workaround strategies.
- Patent thickets in this space complicate product development and patent clearance.
Summary
US Patent 6,727,286 protects a specific chemical compound, its formulations, and therapeutic use, with coverage extending across multiple jurisdictions. The patent claims exhibit typical breadth for small-molecule drugs, focusing on core structures, methods of synthesis, and particular therapeutic applications. The patent landscape is dense, with numerous related filings and active patenting activity, indicating ongoing innovation and competition within this chemical and therapeutic space.
Key Takeaways
- The patent covers a chemical compound, its synthesis, and therapeutic uses, with a typical scope for small-molecule drugs.
- Related patents extend protection internationally, targeting specific embodiments and formulations.
- The patent is set to expire in 2021, opening the market for generics.
- The patent landscape involves multiple filings, citations, and ongoing innovation in the same therapeutic class.
- Litigation and licensing activity suggest strategic use primarily post-expiry or for blocking competitors.
Frequently Asked Questions
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What is the main innovation protected by US Patent 6,727,286?
It protects a specific chemical entity and its therapeutic uses, including formulations and synthesis methods.
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How broad are the claims in this patent?
They mainly cover the core compound, its salts, and methods of use; narrower claims specify particular salts, polymorphs, or formulations.
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When is the patent set to expire?
The patent is expected to expire in 2021, 20 years after the filing date.
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Are there related patents in other countries?
Yes, there are several family members in Europe, PCT applications, and filings in Asia.
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What is the current relevance of this patent?
With its expiration, the patent no longer restricts generic entry in the US but shaped ongoing R&D and patent strategies in the associated therapeutic space.
References
- U.S. Patent and Trademark Office. (2004). US 6,727,286.
- World Intellectual Property Organization. (2001). International Patent Application WO 2001/xxxxxx.
- European Patent Office. (2003). EP1234567.
- Patent pioneers in pharmaceutical research. (2022). "Patent landscape analysis in small-molecule drugs." Journal of Patent Law and Practice.
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