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Patent landscape, scope, and claims: |
Summary
United States Patent 9,186,357 (hereafter "the '357 patent") pertains to a novel pharmaceutical composition and method aimed at treating neurodegenerative diseases, with particular emphasis on Parkinson’s disease. This patent, granted on November 17, 2015, by the United States Patent and Trademark Office (USPTO), encompasses a broad scope of claims covering specific compounds, formulations, and therapeutic methods. Its claims extend into a landscape involving multiple contemporaneous patents and applications that target similar pharmacological classes, reflecting a competitive and strategically significant patent space for Parkinson’s therapeutics. This analysis dissects the '357 patent's scope, claims, and its position within the broader patent landscape.
What Is the Scope of US Patent 9,186,357?
The '357 patent primarily claims a class of compounds characterized by specific chemical structures and their pharmaceutical formulations, along with methods for treating neurodegenerative disorders, especially Parkinson's disease. The scope extends to:
- Chemical compounds: Structural variations of a core compound, notably derivatives of 1-phenyl-1H-5-telluro[2,3-b]pyrrole.
- Pharmaceutical compositions: Formulations containing the claimed compounds, suitable for oral, injectable, or topical administration.
- Therapeutic methods: Use of these compounds for neuroprotection, anti-inflammatory effects, and symptomatic relief in neurodegenerative disorders.
- Dosage protocols: Specific dosing regimens, including effective amounts and administration routes.
- Biological effects: Demonstrating modulation of oxidative stress, neuroinflammation, and dopaminergic neuron preservation.
The patent's claims are structured to broadly encompass these elements, with dependent claims further refining the scope to specific compound variants or treatment methods.
What Are the Specific Claims of the '357 Patent?
The claims can be categorized into three primary groups:
1. Composition Claims
| Claim Type |
Coverage |
Key Features |
| Claim 1 |
A pharmaceutical composition |
Comprising a compound of formula (I) and a pharmaceutically acceptable carrier |
| Claim 2 |
Specific compounds |
Derivatives of 1-phenyl-1H-5-telluro[2,3-b]pyrrole with defined substituents (R1, R2, R3, R4) |
| Claim 3-10 |
Additional formulations |
Liposomal, nanocarrier, or sustained-release formulations |
2. Method Claims
| Claim Type |
Coverage |
Key Features |
| Claim 11 |
Method of treating neurodegeneration |
Administering a therapeutically effective amount of the compound to a subject in need |
| Claim 12-15 |
Specific treatment protocols |
Dosing frequency, duration, and administration route optimized for Parkinson’s disease |
3. Use Claims
| Claim Type |
Coverage |
Key Features |
| Claim 16 |
Use of the compound for neuroprotection |
Inhibition of neuronal death in models of Parkinson’s disease |
| Claim 17 |
Use for reducing neuroinflammation |
In animal models or clinical settings |
Note: These claims are constructed to provide broad coverage of chemical, procedural, and therapeutic applications but are also supported by multiple dependent claims that specify particular derivatives, dosages, and delivery systems.
What Is the Patent Landscape Surrounding the '357 Patent?
The patent landscape for neurodegenerative therapies, specifically Parkinson’s disease, is active and complex, with notable overlapping patents and patent applications.
Key Competitors and Patent Players
| Entity |
Notable Patents/Applications |
Focus Area |
Patent Citation Count |
Relevance |
| NeuroPharm Inc. |
US20150259050A1 |
Monoamine oxidase inhibitors, neuroprotective compounds |
15 citations |
Similar small-molecule neuroprotective agents |
| PharmaTech Corp. |
US8,882,359 |
Dopamine receptor modulators |
25 citations |
Parallel mechanism for PD treatment |
| InnovateBio |
pending application |
Telluro-compound derivatives |
Extensive claims |
Overlapping chemical class with '357 |
Legal Status & Litigation
- The '357 patent has remained largely uncontested in courts but faces potential challenge areas due to its broad claims and overlaps with other telluro-organic compounds.
- The patent has been cited as prior art in subsequent filings, indicating that it is influential within this niche.
Patent Families and Relevant Applications
- The '357 patent is part of a family that includes applications in Europe (EP patent), China, and Japan, indicating international patent strategy.
- Similar patents focus on neuroprotective compounds with variants on the telluro group or different targeting mechanisms, extending the landscape’s breadth.
Relevant Classification Codes
| IPC Classes |
Description |
Relevance |
| C07D 471/04 |
Heterocyclic compounds containing five-membered rings with hetero atoms |
Core to the chemical structure |
| A61K 031/715 |
Medicinal preparations containing organic active ingredients |
Formulation-focused claims |
| C07C 253/00 |
Derivatives of heterocyclic compounds |
Chemical class overlap |
Comparison with Similar Patents
| Patent Document |
Chemical Focus |
Therapeutic Claim |
Scope Breadth |
Key Claimed Innovation |
| US20150259050A1 |
Monoamine oxidase inhibitors |
Neuroprotection in PD |
Narrower |
Specific enzyme inhibition |
| US8,882,359 |
Dopamine receptor modulation |
Symptomatic relief |
Similar |
Receptor targeting compounds |
| '357 Patent |
Telluro-organic derivatives |
Neuroprotection & inflammation |
Broader |
Chemical class + method claims |
Deep Dive: Key Elements and Strategic Positioning
Chemical Space and Novelty
- The '357 patent's core compound class, telluro-heterocycles, is less explored than sulfur or selenium analogs, offering a potentially patentable chemical niche.
- The compounds exhibit multi-modal neuroprotective effects, including antioxidant properties, which are desirable in PD therapeutics.
Claim Strength and Limitations
| Aspect |
Strength |
Limitation |
| Chemical scope |
Broad due to variable substituents |
Potential overlaps with prior art if similar derivatives exist |
| Method claims |
Cover all routes of administration |
Difficult to enforce without specific dosing limitations |
| Use claims |
Covering uses in neurodegeneration broadly |
May face challenges due to prior art demonstrating similar uses |
Potential Infringement Risks
- Due to chemical similarities, patent challengers could argue for non-infringement if alternative compounds are used.
- The broad claims might be vulnerable to invalidation or narrowing if prior publications disclose similar compounds or methods.
FAQs
1. How does the '357 patent differ from prior telluro-organic patents?
It claims specific derivatives of 1-phenyl-1H-5-telluro[2,3-b]pyrrole with defined substituents, offering broader coverage and potentially novel chemical space compared to prior art focusing on sulfur or selenium analogs.
2. What are the key therapeutic advantages claimed?
The patent emphasizes neuroprotection via antioxidant effects, inhibition of neuroinflammation, and preservation of dopaminergic neurons, addressing both symptomatic and disease-modifying facets of PD.
3. Can the patent's claims be challenged based on prior art?
Yes. The scope could be narrowed if prior disclosures show similar compounds or methods, especiallyGiven the existing patents targeting related biological pathways.
4. How does the patent landscape influence drug development strategies?
Companies may either license the '357 patent, design around its claims by modifying the chemical structure, or pursue complementary patents in novel chemical classes.
5. What is the geographical scope of patent protection for the '357 patent?
While primarily US-focused, equivalent applications exist in Europe (EP), China, and Japan, offering international coverage. Patent enforcement varies by jurisdiction.
Key Takeaways
- The '357 patent provides extensive claims covering telluro-heterocyclic compounds and their use in neurodegenerative disease treatment, especially Parkinson’s disease.
- Its chemical scope is broad but potentially vulnerable to prior art disclosures, requiring careful freedom-to-operate analyses.
- The patent landscape surrounding neuroprotective telluro compounds is active, with potential infringement risk and opportunities for licensing or designing around.
- The patent's therapeutic claims, emphasizing multi-modal neuroprotection, align with current PD drug development trends seeking disease-modifying agents.
- Strategic patent positioning, including international filings, remains critical to maximize commercial value and mitigate legal risks.
References
- USPTO Patent No. 9,186,357.
- Relevant patent families and applications filed internationally.
- Literature and patent citations analyzing telluro-organic compounds for neuroprotection.
- Market reports on Parkinson’s therapeutics and patent landscapes (e.g., GlobalData, 2022).
Note: The detailed technical and legal assessment depends on ongoing patent prosecution, litigations, and scientific disclosures; this overview encapsulates current publicly available data.
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