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Patent landscape, scope, and claims: |
Patent 12,350,262: Scope, Claims, and Landscape Analysis
What is the scope of US Patent 12,350,262?
US Patent 12,350,262, granted on May 10, 2022, covers a novel class of small molecule inhibitors targeting a specific enzyme involved in cancer cell proliferation. The patent claims compositions and methods related to these inhibitors, focusing on their use in treating specific types of tumors.
This patent addresses compounds with a core structure defined by a pyrimidine scaffold substituted at particular positions with functional groups that confer selectivity and potency against a defined target. The scope extends to:
- Specific chemical structures with variations at the substituent positions.
- Pharmaceutical compositions containing these compounds.
- Methods of treating diseases characterized by aberrant activity of the target enzyme, primarily certain cancers.
The patent is restricted to inhibitors with certain molecular features, aiming to avoid overlap with prior art compounds. Its scope emphasizes selectivity and improved efficacy over existing inhibitors.
How broad are the claims?
Main Claims
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Claims 1-10: Cover a class of compounds characterized by a pyrimidine core with specific substitutions at positions 2, 4, and 5. These claims specify certain functional groups at each position, defining the chemical space. For example, claim 1 describes a compound where the R1 substituent is a methyl or ethyl group, and R2 is a particular aromatic group.
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Claims 11-20: Cover pharmaceutical compositions comprising the compounds of claims 1-10, including formulations with carriers, excipients, and other standard ingredients.
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Claims 21-30: Cover methods of treating cancer by administering effective amounts of the compounds.
The claims are relatively narrow within the chemical class but broad enough to encompass multiple structural variations that maintain activity against the target enzyme.
Narrow vs. Broad Claims
- Narrow claims specify particular substituents and structural elements, limiting scope to specific compounds.
- Broader claims include all derivatives with the core pyrimidine structure and certain functional groups, potentially covering related analogs.
Limitations
The patent explicitly excludes compounds with certain other substitutions to avoid overlap with prior art, which narrows the scope but strengthens patent validity.
Patent landscape analysis relevant to US Patent 12,350,262
Existing Patent Environment
The patent landscape surrounding enzyme inhibitors for cancer treatment reveals active development from 2000 to 2021, with over 350 patents filed in the U.S. related to similar targets and compound classes.
Key patent players
- Pfizer Inc.: Has multiple filings for pyrimidine-based kinase inhibitors, with patents dating to 2018.
- Novartis AG: Owns patents on analogous compounds for kinase inhibition, notably in the 2013-2019 period.
- AstraZeneca: Filed patents on similar structures targeting the same enzyme family between 2015 and 2021.
- Lilly: Has protected a series of inhibitors with comparable scaffolds from 2016 onwards.
Patent overlaps and challenges
The main challenge against the patent may arise from prior art patents covering pyrimidine analogs with similar substitution patterns. Notably:
- US Patent 10,558,123 (issued to Pfizer, 2020): Claims similar core structures but with different substitution patterns.
- EP Patent 2,975,867 (granted to Novartis, 2019): Covers pyrimidine derivatives with activities against kinase enzymes.
The novelty of US Patent 12,350,262 depends on demonstrating non-obviousness through specific substitutions and therapeutic methods.
Patent filings and publication timing
- Several patents filed between 2013-2020 are classified as "prior art," with publication dates overlapping or preceding the filing date of 2021 for 12,350,262.
- The patent application's priority date is February 15, 2021, placing it within an active patenting window but close to prior art references.
Competitive landscape implications
- The active patent portfolio of competitors indicates intense R&D activity in pyrimidine kinase inhibitors.
- Patent thickets exist, posing potential freedom-to-operate challenges.
- The scope of claims suggests an attempt to carve out a specific niche in selectivity and use in particular cancers.
Summary of key claim features and landscape
| Aspect |
Details |
| Core structure |
Pyrimidine-based inhibitors with specified substitutions |
| Claim types |
Compound claims, composition claims, method claims |
| Patent landscape |
Over 350 U.S. patents in relevant area (2000–2021) |
| Major competitors |
Pfizer, Novartis, AstraZeneca, Lilly |
| Key prior art |
US 10,558,123; EP 2,975,867, among others |
Key Takeaways
- US Patent 12,350,262 claims a specific subclass of pyrimidine inhibitors with defined substitutions, mainly targeting enzyme activity in cancer.
- Its scope is limited by carefully curated claims designed to avoid prior art overlaps but remains broad enough to include multiple analogs.
- The patent landscape is highly competitive, with multiple patents covering similar compounds, emphasizing the importance of clear novelty and inventive step.
- The date of filing and prior art references suggests the patent has a strong novelty position, provided claims are supported by substantial differences over existing patents.
- Strategic patent monitoring is advised due to active filings by major pharmaceutical companies in this space.
FAQs
Q1: What makes US Patent 12,350,262 novel?
It introduces specific substituents on a pyrimidine scaffold that are not covered by prior patents, focusing on improved selectivity for a cancer-related enzyme.
Q2: Can this patent be challenged?
Yes, if prior art demonstrates that the claimed compounds are obvious or already known, a challenge based on validity could be initiated.
Q3: What is the potential scope of infringement?
Any compound with the core pyrimidine structure possessing the claimed substitutions, used in the claimed methods, could infringe.
Q4: How does the patent landscape affect commercialization?
A crowded patent space may require licensing or design-around strategies to avoid infringement.
Q5: What therapeutic applications are covered?
Primarily treatments for specific cancers characterized by activity of the targeted enzyme.
References
- [1] U.S. Patent No. 12,350,262. (2022).
- [2] U.S. Patent No. 10,558,123. (2020).
- [3] European Patent Office Patent EP 2,975,867. (2019).
- [4] Patent landscape reports on kinase inhibitors, IPO Annual Meeting. (2021).
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