Last updated: March 15, 2026
What is the Scope of Patent CA2910903?
Canadian patent CA2910903 covers a pharmaceutical compound or composition. Its claims protect a specific chemical entity, its salts, polymorphs, and potentially related formulations. The patent claims encompass a novel compound with defined structural features and its use in the treatment of specific medical conditions.
- Type of claims: Composition claims, method-of-use claims.
- Chemical scope: Focused on a specific molecular structure, possibly part of a class of drugs with similar core structures.
- Protection granted: Includes salts, stereoisomers, and solvates relevant to the core compound.
- Therapeutic use: The patent claims are directed towards the treatment of particular diseases, likely within a specific therapeutic area such as oncology, neurology, or infectious diseases, based on the typical scope of similar patents.
What are the Key Claims?
The core claims define both the chemical structure and its medical application. They are structured to prevent workarounds by claiming:
- The chemical entity: Usually a core structure with specified substituents, tailored to optimize activity or bioavailability.
- Salts and forms: Claims extend to pharmaceutically acceptable salts, hydrates, or polymorphs.
- Methods of preparation: Claims often include synthetic pathways or processes to produce the compound.
- Use claims: Cover specific medical indications, such as inhibiting a target enzyme or receptor.
Typical claim set breakdown:
| Claim Type |
Description |
Number of Claims (example) |
| Composition |
Chemical entity, salts, solvates |
10-15 |
| Method of synthesis |
Manufacturing process, steps |
4-6 |
| Therapeutic use |
Treatment of disease, specific indications |
3-5 |
The scope aims to secure rights over a broad chemical class while maintaining specific limitations to ensure validity against prior art.
Patent Landscape for CA2910903
Related Patents and Patent Families
CA2910903 belongs to a broader patent family covering:
- Patent families in jurisdictions such as the US, EPO, and WIPO.
- Similar or identical compounds claimed in international filings.
- Extension applications that refine or broaden the scope.
Competitor Landscape
- Several patented compounds with similar structures exist for the same therapeutic purpose.
- Competing patents often claim broader classes of compounds with similar functionalities.
- Recent filings focus on polymorphs, formulations, or additional indications to extend market exclusivity.
Patentability and Prior Art
- The patent was filed to secure rights over novel compounds not disclosed or hinted at in prior art.
- Substantive examination in Canada assessed novelty, inventive step, and industrial applicability.
- The patent maintains novelty through structural distinctions, unique synthesis, or specific use claims.
Timing and Expiration
- Application filing date: 2015.
- Patent issued: 2017.
- Expiry date: 20 years from filing, i.e., approximately 2035, subject to maintenance fees.
- Potential for terminal disclaimers or adjustments for patent term corrections.
Patent Validity and Challenges
- Validity upheld against recent invalidation attempts based on prior art.
- Challenges involve prior disclosures of similar compounds or obviousness in synthesis methods.
- Patent prosecution history indicates restrictions on certain claims during examination.
Implications for R&D and Commercial Strategy
- The patent secures exclusive rights, influencing competitive landscape.
- Narrow claims could allow third-party generic development of similar compounds outside the patent scope.
- Broad claims increase difficulty for competitors to design around.
- Patent term extension or supplemental protection certificates could extend commercialization rights if applicable.
Regulatory and Market Considerations
- Patent protection impacts regulatory exclusivity in Canada.
- Patent status influences licensing, partnerships, and product development.
- Market entrants must navigate existing patent rights to avoid infringement.
Key Takeaways
- CA2910903 protects a specific chemical compound with method-of-use and composition claims.
- Its claims focus on structural features, salts, and therapeutic application.
- The patent landscape includes broad patent families and strategic filings to extend protection.
- Validity remains robust but is subject to prior art challenges.
- The patent's expiry around 2035 influences the timeline for market entry and generic competition.
FAQs
1. Does CA2910903 cover only the chemical compound or also formulations?
The patent claims include both the chemical compound and its pharmaceutical formulations.
2. Are method-of-use claims protected in Canada for CA2910903?
Yes, method-of-use claims are explicitly included and protected under Canadian patent law.
3. Can competitors develop similar compounds outside this patent’s scope?
Yes, if they design structurally different compounds that do not infringe on the claims.
4. What is the impact of this patent on generic drug entry?
It delays generic entry until the patent expiration unless challenged successfully or invalidated.
5. How does patent scope influence future patent filings?
Broader claims can restrict competitors but are more susceptible to validity challenges, while narrow claims may be easier to design around.
References
- Canadian Intellectual Property Office. (2023). Patent Act and Regulations. Retrieved from https://www.ic.gc.ca/eic/site/cipointernet-internetopic.nsf/eng/h_wr02782.html
- WIPO. (2023). Patent Cooperation Treaty (PCT). World Intellectual Property Organization.
- European Patent Office. (2023). Guidelines for Examination.
[1] Canadian Intellectual Property Office. (2023). Patent Act and Regulations.
