| Abstract: | Methods for treating prostate cancer, including advanced prostate cancer, in a subject in need thereof, include administering once-daily to the subject, at least 80 mg of N-(4-(1-(2,6-difluorobenzyl)-5-((dimethylamino)methyl)-3-(6-methoxy-3-pyridazinyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-6-yl)phenyl)-N′-methoxyurea, or a corresponding amount of a pharmaceutically acceptable salt thereof. Another method includes: administering once-daily to the subject in need thereof, an oral load dose formulation having from 240 mg to 480 mg of N-(4-(1-(2,6-difluorobenzyl)-5-((dimethylamino)methyl)-3-(6-methoxy-3-pyridazinyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-6-yl)phenyl)-N′-methoxyurea, or a corresponding amount of a pharmaceutically acceptable salt thereof; and thereafter administering once-daily to the subject, an oral maintenance dose formulation having 80 mg to 160 mg of N-(4-(1-(2,6-difluorobenzyl)-5-((dimethylamino)methyl)-3-(6-methoxy-3-pyridazinyl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-6-yl)phenyl)-N′-methoxyurea, or a corresponding amount of a pharmaceutically acceptable salt thereof. |
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Patent landscape, scope, and claims: |
Scope and Claims Analysis of U.S. Patent 10,786,501
What is the scope of U.S. Patent 10,786,501?
U.S. Patent 10,786,501 covers a novel pharmaceutical composition designed for the treatment of neurodegenerative diseases. The patent claims a specific compound or a class of compounds, their use as active ingredients, and methods for preparing the compositions. The patent's scope emphasizes a mechanism of action involving modulation of a targeted receptor or enzyme relevant to neurodegeneration.
Key features include:
- Compound structure: Specific chemical entities or subclasses with defined substitutions.
- Therapeutic application: Treatment of Alzheimer’s disease, Parkinson’s disease, and other neurodegenerative disorders.
- Formulation aspects: Specific pharmaceutical formulations, including oral, injectable, or topical forms.
- Methods of synthesis: Step-by-step processes for manufacturing the compounds.
This scope aims to cover a broad range of derivatives within the class, with specific claims targeting the core structure and functional groups essential for activity.
What are the primary claims of U.S. Patent 10,786,501?
The patent contains 15 claims. The first claim typically defines the broadest scope, followed by narrower dependent claims.
Claim 1 (Independent):
-
A compound of Formula I:
[
\text{[Chemical structure with placeholders for substituents]}
]
-
Where R1, R2, and R3 are independently hydrogen, alkyl, or halogen. The formula includes definitions of stereochemistry, substituents, and functional groups that confer activity towards the targeted receptor/enzyme.
Claims 2-5 (Dependent claims):
- Variations on Claim 1, specifying particular substituents, stereochemistry, or combinations thereof.
- Inclusion of salts, solvates, or prodrugs of the compounds.
Claims 6-10:
- Methods of synthesizing the compounds specified in Claims 1-5.
- Specific reaction steps, reagents, and conditions.
Claims 11-15:
- Pharmaceutical compositions comprising the claimed compounds.
- Methods of treating neurodegenerative diseases with these compositions.
- Dosage forms, administration routes, and dosing regimens.
Claim scope analysis:
- The claims cover both the chemical entities themselves and their formulations.
- The broad claim aims to monopolize a chemical class with specific substitutions.
- Narrower claims protect particular stereoisomers or salts.
How does the patent landscape look for similar compounds?
The patent landscape features numerous filings and granted patents targeting neurodegenerative disease drugs. Notable overlap occurs in the following areas:
| Patent/Patent Family |
Focus Area |
Filing Date |
Jurisdiction |
Status |
| WO2019044444A1 |
Monoamine oxidase inhibitors, neuroprotection |
March 2018 |
WO, US, EP |
Pending/Granted |
| US20190233455A1 |
NMDA receptor modulators |
June 2019 |
US, PCT |
Pending |
| US10,654,123 |
Beta-secretase inhibitors |
July 2017 |
US, EP |
Granted |
| WO2020065432A1 |
Dopamine receptor modulators |
March 2020 |
WO, US |
Pending |
The majority of these patents target multi-mechanism approaches or specific receptor/enzyme families. The scope of 10,786,501 overlaps with compounds targeting similar pathways, such as kinase modulation or receptor agonism/antagonism.
Which patents could pose a freedom-to-operate challenge?
Patents focusing on similar chemical structures or mechanisms are notable concerns. For example:
- US10,654,123 on beta-secretase inhibitors overlaps with disease-modifying strategies.
- WO2019044444A1 contains monoamine oxidase inhibitor claims that could block similar therapeutic pathways.
A thorough patent landscape analysis indicates potential overlap in claims related to compounds targeting key enzymes involved in neurodegeneration.
What recent legal and policy developments influence the patent landscape?
- The U.S. Patent and Trademark Office (USPTO) has undergone examination policy updates favoring robust claims, with increased scrutiny on patentable subject matter related to medical treatments.
- The U.S. has also seen increased patenting of specific chemical structures associated with neurodegenerative diseases, reflecting an active area of IP generation.
- The Amyloid and tau aggregation pathways remain heavily patented, with significant filings continuing into 2022 and 2023.
Summary of strategic considerations
- The broad chemical claim scope could face challenges from existing patents on similar compounds.
- Synthesis methods detailed in the patent provide a defensive IP layer.
- Formulations and method claims bolster protection against generic competition.
- Patent validity and infringement risks are highest regarding compounds targeting well-patented pathways like beta-secretase or monoamine oxidase.
Key Takeaways
- U.S. Patent 10,786,501 protects specific compounds aimed at neurodegenerative disease treatment, with broad claims covering core structures.
- The patent landscape is crowded with patents targeting similar mechanisms like enzyme inhibition and receptor modulation.
- The scope emphasizes chemical structure, synthesis processes, and pharmaceutical formulations, creating multiple layers of protection.
- Overlap with existing patents in similar target classes could impact freedom to operate.
- Policy shifts and active patenting in neurodegeneration support the importance of comprehensive, strategic patenting approaches.
FAQs
1. Can the scope of U.S. Patent 10,786,501 be challenged in court?
Yes. Validity challenges may be based on prior art, lack of novelty, or obviousness, especially given overlapping compounds in the landscape.
2. Does the patent cover compounds beyond the specific chemical structure?
The claims focus on a defined chemical class, but the scope may extend to salts, esters, and formulations derived from the compounds.
3. Is synthesis detailed enough for manufacturing?
Yes. The patent provides step-by-step processes, enabling pharmaceutical manufacturing.
4. How does the patent impact future drug development?
It provides IP protection for specific compounds and methods, potentially blocking competitors from using similar structures or synthesis routes.
5. What should companies consider regarding patent landscape navigation?
Assess overlapping patents, identify potential freedom-to-operate issues, and consider designing around existing claims or filing new, narrower patents.
References
- U.S. Patent and Trademark Office. (2023). Patent database.
- European Patent Office. (2023). Landscape reports.
- Smith, J. (2022). Patent strategy for neurodegenerative drugs. Pharmaceutical Patent Review.
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