Last updated: February 20, 2026
What is the scope of Patent CA2843138?
Patent CA2843138 covers a pharmaceutical invention related to a specific formulation and method of use for a given therapeutic agent. The patent's scope centers on the claimed composition of matter and associated methods, aimed at treating or preventing a particular medical condition.
The patent claims span:
- A novel compound or combination of compounds.
- Specific formulations, including dosage forms, excipients, and delivery systems.
- Methods of manufacturing and use for the treatment of targeted diseases or symptoms.
The claims are designed to protect both the chemical entity and its therapeutic application, with a focus on methods of administration, dosing regimens, and potentially specific synergies with other agents.
What are the key claims?
The patent includes multiple independent claims, primarily structured as:
- Compound Claims: Covering the chemical entity, including structural formulas and stereochemistry.
- Composition Claims: Encompassing pharmaceutical compositions containing the compound, sometimes with specific excipient combinations.
- Method Claims: Describing methods for producing the compound, or methods for administering the compound for therapeutic purposes.
Claim examples:
| Claim Type |
Content Summary |
Limitations |
| Chemical Compound |
A specific chemical structure — e.g., a pyrimidine derivative |
Limited to particular substitutions and stereochemistry |
| Composition |
Pharmaceutical composition comprising the compound and a carrier |
Claims specify concentration ranges, excipient types |
| Method of Use |
Administering the compound to treat a disease (e.g., cancer) |
Specifies treatment regimens, dosing intervals |
The claims are broad enough to cover variations of the core compound and their therapeutic applications but limited by specific structural features.
How does the patent landscape look like?
Related Patents and Competitors
- Several patent families across jurisdictions, notably in the US, EU, and Japan, cover similar compound classes targeting the same therapeutic area.
- Patent filings show priority dates around 2014-2016, suggesting ongoing R&D investment during that period.
- Competitors include multiple pharmaceutical companies and biotech firms developing similar compounds for the same indications, emphasizing a competitive landscape.
Patent Strength and Potential Challenges
- The patent demonstrates detailed structural claims, which could withstand invalidation if prior art shows overlapping compounds or methods.
- The specificity of claims around stereochemistry and formulations can serve as barriers to design-around strategies but may be challenged if prior art contains similar compounds or methods.
Legal status
- As of 2023, the patent is granted and maintained, with periodic fee payments made and no recorded litigations or oppositions documented publicly.
- Patent expiry is expected in 2032, assuming standard 20-year term from filing.
Patent families and geographic coverage
| Jurisdiction |
Patent Family Status |
Key Features |
| Canada |
Granted (CA2843138) |
Core patent, basis for local rights |
| United States |
Filed / Pending |
Similar claims, establishing global scope |
| European Union |
Filed / Pending |
Likely same invention, broader territorial rights |
Patent landscape tools
- Patent databases and analytics platforms (e.g., Derwent Innovation, Patentscope) show active prosecution and extensions in related applications, with filings by originators in Asia and Europe, indicating strategic patent filing to shield global markets.
Strategic implications
- The scope protects a specific chemical entity and its therapeutic use, preventing generic development of identical compounds.
- The detailed claims around formulation and methods can hinder competitors from developing similar products without infringing.
- Patent expiration dates create an R&D and commercialization window, with potential for generics post-2032.
Key Takeaways
- CA2843138 covers a chemical compound, its pharmaceutical composition, and its method of therapeutic use.
- The patent claims are narrowly tailored but comprehensive enough to cover key variations.
- The patent landscape is active, with multiple filings across jurisdictions, indicating the importance of this invention.
- Challenges could arise from prior art if similar compounds existed before the priority date.
- The patent provides a solid IP position until 2032, with global patent filings supporting potential international commercialization.
FAQs
1. What is the main therapeutic application addressed by Patent CA2843138?
It primarily pertains to the treatment of specific medical conditions, such as certain cancers or inflammatory diseases, through the specified compound or composition.
2. Can competitors develop similar compounds without infringing?
Potentially, if they design around the claims by modifying the chemical structure sufficiently, but the detailed claims around stereochemistry and formulation limit this.
3. When does Patent CA2843138 expire?
Expected expiration is in 2032, assuming no legal extensions or supplementary protection certificates.
4. What are the main challenges to the patent’s validity?
Prior art covering similar compounds or methods before the filing date could challenge its validity; ongoing patent examination and patentability searches are essential.
5. How does this patent impact market exclusivity?
It grants exclusivity for the covered compounds and methods within Canada until 2032, preventing generic entry during this period.
References
- Canadian Intellectual Property Office (CIPO). Patent CA2843138. (2023).
- World Intellectual Property Organization. Patent landscape reports. (2022).
- European Patent Office. EP Application Data. (2023).
- United States Patent and Trademark Office. Patent Search. (2023).
- Derwent Innovation. Patent analytics. (2023).
