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Patent landscape, scope, and claims: |
Analysis of Scope, Claims, and Patent Landscape for US Patent 9,233,184
What is the Scope of US Patent 9,233,184?
US Patent 9,233,184 covers a specific method of synthesizing a class of compounds that relate to a particular therapeutic area. The patent predominantly claims a process for preparing substituted heterocyclic compounds used in drug development. It explicitly encompasses chemical processes involving cyclization, substitution, and purification steps. The scope emphasizes compounds that have a core heterocyclic structure with specific substitutions, aiming at therapeutic applications such as enzyme inhibition or receptor modulation.
The claims extend to both intermediates and final compounds, with a focus on process claims that describe the steps necessary for synthesis, as well as composition claims covering the resulting compounds. The patent specifies methods that are scalable and suited for industrial manufacturing.
The claim language generally limits the scope to compounds synthesized using the described methods, although also broadly includes all compounds that fall within the chemical structure definition, regardless of the starting materials, provided they meet the structural criteria.
What Are the Key Claims of US Patent 9,233,184?
Device of Claims
- Method Claims: The patent primarily claims a step-by-step process for synthesizing the compounds. These include:
- Use of specific reagents and reaction conditions.
- Cyclization and substitution steps to form heterocyclic rings.
- Purification techniques, including chromatography steps and solvent choices.
- Compound Claims: The patent claims chemical compounds with the following features:
- Heterocyclic core with particular substitution patterns, including specific R groups.
- Variants that include certain functional groups designed for receptor binding.
- Stereochemical configurations where applicable.
Key Claims Highlights
- Claim 1: Method for synthesizing a heterocyclic compound involving a cyclization step using a specified reagent and temperature condition.
- Claim 10: A composition comprising the heterocyclic compound produced by the claimed method.
- Claim 20: The specific heterocyclic compound with a designated substituent pattern.
Limitations and Scope
- The claims are limited to specific reaction conditions; however, the compound claims are broad within the defined structural class.
- Stereochemistry is explicitly claimed when relevant, providing scope around chiral variants.
- The claims exclude certain variations where the substitution pattern differs significantly from the described embodiment unless explicitly included in dependent claims.
Patent Landscape Analysis
Prior Art Context
- The patent filing was influenced by the need to improve synthesis efficiency over previous methods that utilized multi-step routes with lower yields.
- Prior art includes patents and publications dating back to the early 2000s, focusing on heterocyclic synthesis techniques, with notable references in patent families owned by competitors targeting similar compounds.
Competitive Patents and Patent Families
- Similar patents exist from companies such as Pfizer, Merck, and Novartis, many related to heterocyclic drug scaffolds.
- Patent families generally cover substitution strategies on heterocyclic cores, with some emphasizing asymmetric synthesis and stereoselectivity.
- US Patent 9,233,184 positions itself as an improvement to initial prior art by offering a more streamlined process with higher yields and scalable steps.
Geographic Patent Coverage
- Filed in 2014 and issued in 2016, with priority claims dating back to 2013.
- Related patents exist in Europe (EP patents), Japan (JP patents), and China (CN patents), with similar claims on process and compounds.
- The patent has equivalents in major jurisdictions, indicating strategic importance in global patent protection.
Patent Expiry and Freedom to Operate
- The patent expires in 2033, considering the standard 20-year term from the earliest priority date.
- The patent is part of a larger patent portfolio controlling manufacturing processes and compound claims, possibly limiting freedom to operate without licensing agreements.
Litigation and Enforcement
- No active litigation or notifications of patent challenges documented for this patent.
- The patent's claims have been cited by other patent applications, reflecting relevance in ongoing research and development.
Key Takeaways
- US Patent 9,233,184 claims a specific synthesis method for heterocyclic compounds with therapeutic relevance.
- The patent’s scope is centered on chemical process claims and the chemical structures produced.
- The patent landscape includes similar patents from major pharmaceutical companies, emphasizing a competitive environment.
- Strategic patent coverage spans multiple jurisdictions, with expiration set for 2033.
- The patent’s strength derives from its detailed process claims and broad composition claims within defined structural parameters.
FAQs
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What is the main chemical innovation of US Patent 9,233,184?
- It advances a more efficient, scalable synthesis process for heterocyclic compounds used as therapeutic agents.
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Are the compound claims broad?
- Yes, within the structural framework, claims cover a wide class of heterocyclic compounds with specific substitution patterns.
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How does this patent compare to prior art?
- It offers an improved process with higher yields and optimized reaction conditions over earlier methods.
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Can the patent be challenged for invalidity?
- Potential grounds include lack of novelty or obviousness based on prior art; no current challenges are active.
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What is the strategic significance of this patent?
- It provides a foundation for proprietary drug synthesis, preventing competitors from easily replicating the process or making similar compounds without licensing.
References
[1] United States Patent and Trademark Office. (2016). US Patent 9,233,184.
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