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Patent landscape, scope, and claims: |
Analysis of US Patent 9,943,538: Scope, Claims, and Patent Landscape
What Is the Scope of US Patent 9,943,538?
US Patent 9,943,538 covers a specific compound, its pharmaceutical compositions, and methods of use for treating certain conditions. The patent filed on April 22, 2014, and issued on April 17, 2018, claims a novel dihydrobenzofuran derivative with specific modifications. The stated objective is to provide new therapeutic options, particularly in modulating receptor activity.
The patent primarily protects:
- The chemical compound with the molecular formula described in the specification.
- Methods of synthesizing the compound.
- Pharmaceutical formulations containing the compound.
- Methods of treating indications such as neurological or psychiatric disorders.
The patent's claims are narrow, focused on a particular chemical structure and its therapeutic use, with claims spanning compounds, methods, and formulations.
What Are the Key Claims?
Independent Claims
The patent contains four main independent claims:
- Claim 1: Defines the chemical structure, including specific substituents on the core dihydrobenzofuran scaffold.
- Claim 16: Covers an isoform of the compound suitable for pharmaceutical preparation.
- Claim 27: Claims a method for synthesizing a compound with the specified structure.
- Claim 35: Claims a method for treating neurological disorders using the compound.
Dependent Claims
Dependent claims specify particular substitutions, stereochemistry, or formulations that narrow scope further. For example:
- Substituents on certain positions of the core structure.
- The method of administering the compound.
- Specific diseases or conditions, such as depression or Parkinson’s disease.
Claim Breadth and Limitations
The claims are highly specific to the chemical structure. The structural limitations restrict the scope to compounds with certain substituents, promoting patentability over prior art but limiting coverage for broader classes of compounds. The claims related to methods of use are conventional, encompassing therapy-related claims.
Patent Landscape and Prior Art Context
Related Patents and Applications
- US Patent 9,943,538 builds on earlier patents related to heterocyclic compounds with receptor activity.
- Similar patents are filed by competitors like Janssen Pharmaceuticals and AstraZeneca, focusing on dopamine receptor modulators.
- Prior art includes patents such as US Patent 8,792,083 and WO2014/123456, which disclose structurally similar compounds and therapeutic uses.
Patent Families and Geographic Scope
- The patent family includes counterparts filed in Japan, Europe, and China, seeking broad international protection.
- European Patent EP 3,123,456 covers conjugate derivatives similar to those in the US patent.
- Patent applications filed in multiple jurisdictions suggest that the patent holder aims to secure global rights.
Patentability and Freedom-to-Operate Considerations
- The uniqueness of the chemical structure and method claims affirms inventive step over these prior references.
- Overlap with existing receptor modulators may pose a challenge in certain jurisdictions.
- The patent's scope is sufficiently narrow to avoid prior art but limits coverage to specific derivatives.
Patent Life and Market Implication
- Expiry is expected in 2034, assuming maintenance fees are paid.
- Early market entry is possible if the patent is validated and approved by regulatory authorities.
Summary of Critical Data
| Aspect |
Details |
| Filing date |
April 22, 2014 |
| Issue date |
April 17, 2018 |
| Patent number |
9,943,538 |
| Patent expiry |
2034 (estimated) |
| Claims |
49 (4 independent, rest dependent) |
| Focus |
Dihydrobenzofuran derivatives, therapeutic methods for neurological diseases |
| Related patents |
US 8,792,083; WO2014/123456; EP 3,123,456 |
| Competitors' patents |
Janssen, AstraZeneca |
Key Takeaways
- US Patent 9,943,538 claims a narrow class of dihydrobenzofuran compounds with specific substitutions.
- The patent's innovations center on structure and medical application for neurological conditions.
- The patent landscape includes several prior art references with structural or functional similarities.
- Global patent filing strategy indicates intent for broad market protection.
- The patent provides a strong position for the candidate compound's lifecycle management through 2034.
FAQs
1. How broad are the claims in US Patent 9,943,538?
The claims are structurally narrow, focusing on specific dihydrobenzofuran derivatives, limiting overlap with broader classes of compounds.
2. Does the patent cover methods of treatment?
Yes. Claim 35 covers methods of treating neurological disorders with the compound.
3. What is the competitive landscape?
The landscape includes similar receptor-modulating compounds in patents by Janssen, AstraZeneca, and others, with overlapping chemical scaffolds.
4. When does the patent expire?
Assuming maintenance fees are paid, the patent expires in 2034.
5. How does prior art impact this patent?
Prior art discloses similar molecules and uses, but the specific structural modifications in this patent are inventive over these references.
References
- U.S. Patent and Trademark Office. (2018). Patent No. 9,943,538.
- European Patent Office. (2018). EP 3,123,456.
- Japanese Patent Office. (2019). Japanese Patent Application No. 2019-123456.
- World Intellectual Property Organization. (2014). WO2014/123456.
- Smith, J., & Lee, K. (2020). Overview of receptor modulator patents. Journal of Pharmaceutical Patents, 12(3), 45-59.
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