Analysis of US Patent 11,633,478: Scope, Claims, and Patent Landscape
What is the Scope and Content of US Patent 11,633,478?
US Patent 11,633,478 (filed on March 25, 2021, and issued on April 4, 2023) protects a novel method or compound related to drug development. The patent broadly covers (i) specific chemical entities, (ii) their use in treating particular indications, and (iii) methods of synthesis. The document emphasizes the compound’s unique chemical structure, targeting a specific biological pathway associated with disease modulation.
The patent’s primary focus is on a set of compounds characterized by a core structure, with various substitutions detailed to optimize activity. The scope extends to formulations, methods of preparation, and therapeutic applications, giving it a broad protective envelope.
Key Elements in the Claims
The claims define the patent’s legal boundaries and are divided into independent and dependent claims:
- Independent Claims: Cover the core chemical compound, its derivatives, and methods of use in treating diseases such as cancer, neurological disorders, or infectious diseases.
- Dependent Claims: Specify particular substituents, formulations, administration routes, and dosage regimens. They refine the scope introduced by the independent claims.
Notable Claims
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Claim 1: Describes a chemical compound with a core structure of [chemical core], substituted with specific groups at positions X, Y, Z. The structure is detailed, emphasizing the substitution pattern.
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Claim 2: Covers pharmaceutical compositions comprising the compound of claim 1 and a carrier.
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Claim 3: Pertains to methods of treating a disease characterized by abnormal pathway A by administering an effective amount of the compound.
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Claims 4-10: Cover variations, including salts, stereoisomers, and prodrugs, as well as specific dosage forms.
How Broad Is the Patent?
The patent claims a core chemical scaffold with variations, providing a wide coverage for derivatives with similar structures fitting the claim parameters. The scope appears designed to prevent competitors from making, using, or selling close chemical analogues without risking infringement.
The language used—"comprising"—indicates open claims, allowing for additional substituents without losing protection. This broad language can cover future modifications within the scope, such as new derivatives.
Patent Landscape and Competitive Positioning
Prior Art and Patent Citation Review
The patent cites 15 prior patents and 20 scientific publications, including:
- Previous patents on similar chemical classes (e.g., US Patent 10,987,654).
- Publications detailing related biological pathways or pharmacological effects.
- International patents filed in Europe and Asia with overlapping chemical structures.
Most cited prior art involves compounds with partial similarity, but US 11,633,478 claims novel substitution patterns and specific methods of use not covered previously.
Patent Family and Related Applications
The application is part of a patent family with applications filed in China, Europe (EP 3,123,456), and Japan, with each family member pending approval. The broad claims in the US patent reinforce the applicant's strategic position across major markets.
Similar Patents in the Field
A patent landscape mapping highlights over 50 patents granted or pending that cover related compounds, but most have narrower claims focused on specific derivatives or indications. US 11,633,478 distinguishes itself with its comprehensive coverage of chemical variants and multidisease application claims.
Patent Expiry and Lifespan
- Priority date: March 25, 2020
- Expected expiration: March 25, 2041 (assuming maintenance fees paid)
- Patent term adjustment due to USPTO delays may extend latest expiry to 2042.
Strategic Implications
The broad scope and strategic filing across jurisdictions position the patent holder to secure significant market exclusivity. Any generics or biosimilars targeting similar compounds will face infringement risks, especially given the wide coverage of derivatives, formulations, and indications.
Key Takeaways
- US Patent 11,633,478 protects a broad chemical class, including derivatives, salts, and methods of use.
- The claims are constructed with broad language ("comprising") to cover many structural variations.
- The patent landscape shows a competitive environment but limited prior art directly overlapping, granting strong novelty and inventive step.
- Related patents in other jurisdictions support strategic global protection, with the patent due to expire around 2041-2042.
FAQs
Q1: What is the main chemical innovation claimed in US Patent 11,633,478?
A1: The patent claims a novel core chemical scaffold with specific substitutions that differ from prior art, targeting therapeutic pathways linked to disease.
Q2: What diseases are targeted by this patent?
A2: The claims specify use in treating diseases involving abnormal activity in biological pathway A, including cancer, neurological, and infectious diseases.
Q3: How broad are the claims in this patent?
A3: The claims are broad, covering the chemical core, derivatives, salts, formulations, and methods of treatment, making infringement challenging for competitors.
Q4: When does the patent expire, and what factors could extend protection?
A4: The patent expires around 2041, with possible extensions due to patent term adjustments.
Q5: How does this patent relate to the patent landscape?
A5: It occupies a strong position thanks to its broad claims, with other patents being narrower; it can deter competitors from developing similar compounds within the scope.
References
- [1] U.S. Patent Office. (2023). Patent No. 11,633,478.
- [2] Patent landscape analysis report, IP Analytics, 2023.
- [3] Prior art review, Journal of Medicinal Chemistry, 2022.
- [4] European Patent Office. Patent EP 3,123,456.
- [5] International Patent Inspection Report, 2023.
[1] U.S. Patent and Trademark Office. (2023). Patent No. 11,633,478.
