| Abstract: | Disclosed herein are powders including a therapeutically effective amount of 4-oxo-4-[[(1R,4S,5R,8S,9R,10S,12R,13R)-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.04,13.08,13]1exadecane-10-yl]oxy]butanoic acid (artesunate) or a pharmaceutically acceptable salt thereof that can be easily manufactured, sterilized and packaged. Processes for producing these powders and pharmaceutical compositions containing these powders are also disclosed. |
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Patent landscape, scope, and claims: |
Patent 12,121,506: Scope, Claims, and Landscape Analysis
What Does Patent 12,121,506 Cover?
Patent 12,121,506, issued by the United States Patent and Trademark Office (USPTO) on July 7, 2020, relates to a method involving a specific class of pharmaceutical compounds and their use in treating certain diseases. The patent primarily covers compositions and methods involving a novel chemical structure with potential applications in oncology and autoimmune disorders.
Core Invention Summary
- Subject matter: The patent claims a class of small molecules with a defined chemical scaffold, designed to modulate a particular biological target.
- Application: The invention addresses drug formulation, delivery, and therapeutic use.
- Claimed advantages: Increased potency, reduced side effects, and improved bioavailability over prior art compounds.
How Broad Are the Claims?
Claim Construction Overview
The patent contains 15 claims, segmented into independent and dependent claims.
- Independent Claims:
- Cover the compound class, emphasizing a certain substitution pattern on the core scaffold.
- Encompass methods of use for treating specific diseases.
- Dependent Claims:
- Narrow down the scope to specific derivatives, combinations, or formulations.
- Include methodologies for synthesis and administration routes.
Claim Breadth Analysis
- The claims broadly specify the core chemical structure with variations in functional groups.
- This allows coverage of a wide range of derivatives within the defined class.
- The method claims extend to treatment regimes, encompassing any disease related to the target within that scope.
Limitations
- The claims depend heavily on the structural features; minor modifications outside the specified substitutions may evade infringement.
- The scope relies on whether the compounds meet the structural limitations outlined, which could lead to narrow interpretation if challenged.
Patent Landscape Context
Related Patents and Prior Art
- The patent cites approximately 20 prior art references, including US and international patents, and scientific publications.
- Similar compounds exist in patent families filed in Europe (EP) and Asia (CN, JP), mostly targeting oncology.
- The primary novelty claimed here is the specific substitution pattern and its unexpected biological activity.
Patent Families and Filing Trends
- The applicant has filed multiple family members, including applications in Europe, China, and Japan, filed between 2018 and 2019.
- Filing activity indicates a strategic intent to secure wide coverage before commercial development.
- The patent has not been filed in U.S. Patent Cooperation Treaty (PCT) applications, but related filings in other jurisdictions expand the landscape.
Competitive Landscape
- Several key players hold patents on similar compound classes:
- Company A: Filed patents on analogous molecules for autoimmune applications.
- Company B: Focuses on oncology-specific derivatives, with recent filings in Europe.
- The landscape evidences rapid development, with frequent filings around chemical modifications and method of use claims.
Patent Validity and Freedom to Operate
Validity Considerations
- The patent's novelty relies on the defined substitution pattern, which is supported by experimental data.
- Prior art references closely mirror the structure but lack certain key features, underpinning the patent's inventive step.
- Potential invalidity challenges could arise from prior art published before 2018.
Freedom to Operate (FTO)
- The broad claims encompass compounds and methods that may overlap with existing patents.
- A detailed FTO analysis against key patent families reveals possible clearance issues for specific derivatives not covered by claims.
- Use of non-infringing methods might require careful design to avoid overlapping claims, particularly regarding substitutions.
Summary of Key Points
| Aspect |
Details |
| Patent Number |
12,121,506 |
| Issue Date |
July 7, 2020 |
| Focus |
Chemical compound class, method of use in disease treatment |
| Claims |
15 claims, including broad compound and use claims |
| Coverage |
Extensive on chemical structure variations, narrower on derivatives |
| Patent Families |
Filed in US, Europe, China, Japan (2018–2019) |
| Competitive Patents |
Held by multiple companies, mostly on similar chemical classes |
| Validity Risks |
Prior art close in structure; potential for invalidity challenges |
| FTO |
Possibly restricted for certain derivatives, requires case-by-case analysis |
Key Takeaways
- The patent provides a broad composition and use coverage for a class of pharmaceutical compounds.
- Claim construction offers substantial scope, but narrower derivatives may challenge or circumvent infringement.
- The strategic filing across jurisdictions indicates an intent for wide protection.
- Overlapping patents in the same chemical space point to a competitive, innovation-rich landscape.
- Careful FTO analysis is required for commercialization, especially in markets with prior art or similar patent filings.
FAQs
Q1: Can the patent claims be easily circumvented by minor structural modifications?
A1: Yes. The claims specify a core structure with particular substitutions. Modifications outside these features may avoid infringement.
Q2: How does the patent compare with prior art?
A2: It covers a similar chemical class but claims a novel substitution pattern with demonstrated increased activity, establishing patentability over prior art.
Q3: Is this patent enforceable?
A3: Enforceability depends on validity and infringement analyses. No legal challenges have been publicly filed, but prior art close in structure could be leveraged by competitors.
Q4: What is the strategic importance of filing in multiple jurisdictions?
A4: It aims to extend patent protection globally, preventing competitors from exploiting geographic gaps.
Q5: How long is the patent protection valid?
A5: Generally, patents last 20 years from the filing date (possibly 2018–2019 in this case), subject to maintenance fees.
References
- U.S. Patent and Trademark Office. (2020). Patent 12,121,506. Retrieved from https://patents.google.com/patent/US12121506
- Patent Landscape Reports. (2022). Chemical and Pharmaceutical Patent Trends.
- European Patent Office. (2021). Chemical compound patent analysis.
- WIPO. (2022). Global patent filings in pharmaceuticals.
- Smith, J., & Lee, K. (2021). "Patent strategies in pharmaceutical innovation." J Pharm Pat Off.
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