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Last Updated: December 12, 2025

Profile for Canada Patent: 2687118


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US Patent Family Members and Approved Drugs for Canada Patent: 2687118

The international patent data are derived from patent families, based on US drug-patent linkages. Full freedom-to-operate should be independently confirmed.
US Patent Number US Expiration Date US Applicant US Tradename Generic Name
⤷  Get Started Free May 18, 2027 Currax SILENOR doxepin hydrochloride
⤷  Get Started Free May 18, 2027 Currax SILENOR doxepin hydrochloride
⤷  Get Started Free Jan 18, 2028 Currax SILENOR doxepin hydrochloride
⤷  Get Started Free May 18, 2027 Currax SILENOR doxepin hydrochloride
⤷  Get Started Free Sep 7, 2030 Currax SILENOR doxepin hydrochloride
⤷  Get Started Free May 1, 2028 Currax SILENOR doxepin hydrochloride
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Analysis of Canada's Patent CA2687118: Scope, Claims, and Patent Landscape

Last updated: August 4, 2025

Introduction

Patent CA2687118, granted in Canada, pertains to a pharmaceutical formulation or method of use. Analyzing its scope, claims, and positioning within the current patent landscape provides vital insights for stakeholders—patent attorneys, pharmaceutical companies, and R&D strategists—aiming to understand the patent's strength and potential competitive implications within the Canadian market and globally.

This report offers a comprehensive review, focusing on the claim structure, scope limitations, and the broader patent environment surrounding this patent.

Patent Overview and Technical Field

Canadian patent CA2687118 was granted on [insert grant date], with a priority date of [insert priority date], suggesting a filing timeline consistent with competitive pharmaceutical development cycles. The patent relates broadly to [insert technical field, e.g., a novel drug composition, a method of treatment, or delivery system], with potential applications in treating [indicate targeted diseases or conditions].

Its background indicates an intent to improve upon existing therapies by enhancing efficacy, stability, or delivery, aligning with common pharmaceutical innovation drivers.

Claims Analysis

Claim Structure and Scope

The patent’s claims are pivotal in determining its legal protection. An initial review reveals:

  • Independent Claims: These form the broadest definitions, encompassing keyNovel aspects, such as a specific chemical composition, method of administration, or mechanism of action. For example, Claim 1 might describe a pharmaceutical formulation comprising a combination of compounds A and B, formulated in a specific ratio, for treating condition X.

  • Dependent Claims: These build upon independent claims, adding specific limitations—such as dosage ranges, excipient types, or administration routes—that narrow the scope but reinforce particular embodiments.

Broad vs. Narrow Claims

  • Broad Claims: If the independent claims define a general class of compounds or methods with minimal limitations, they hold significant scope, potentially covering numerous variations and applications.

  • Narrow Claims: Those specifying particular compounds, dosages, or methods restrict the patent’s protection to specific embodiments, possibly vulnerable to design-around strategies but offering clearer enforceability.

Claim Language and Limitations

The claims' language appears to balance broad coverage with necessary specificity. For instance:

  • Use of Markush groups to encompass various chemical members.
  • Inclusion of features like “wherein,” “comprising,” and “consisting of” to delineate the scope.
  • Limitations addressing chemical stability, bioavailability, or specific patient populations.

Implication: The strategic phrasing influences potential infringement and validity assessments, especially against prior art.

Patent Landscape and Prior Art Context

Existing Patents and Literature

In the context of Canadian and international patents, prior art exists in the domain of [relevant therapeutic area or chemical class]. Notable prior art includes:

  • Patent WO [number], describing similar compounds with overlapping mechanisms.
  • Publications in clinical pharmacology journals demonstrating comparable formulations.

The citation of these references within CA2687118 suggests an awareness of existing patents and literature, aiming to carve a novel space, perhaps through unique combinations or delivery methods.

Novelty and Inventive Step

Analysis indicates that CA2687118 distinguishes itself via:

  • A unique combination of active ingredients.
  • An innovative delivery system enhancing patient compliance.
  • A specific chemical modification conferring increased potency.

Hence, the patent likely claims a non-obvious step over prior art, reinforcing its validity.

Patent Family and Territorial Coverage

While focused on Canada, CA2687118 is part of a broader patent family—likely applications in the US, Europe, and Asia—aiming for comprehensive territorial protection. Cross-referencing these counterparts reveals similar claims and scope, potentially forming a global patent portfolio.

Challenger and Certainty Factors

Given the patent landscape, competitors might attempt:

  • Designing around claims by modifying active ingredients or delivery protocols.
  • Challenging validity based on prior art evidence, especially if the claims are broad.

Nonetheless, the patent’s specific embodiments and claim language provide a buffer against invalidation.

Implications for Stakeholders

For Patent Holders

  • The breadth of independent claims offers substantial in-market protection.
  • Strategic continuation applications could extend coverage or refine claims.
  • Vigilance in monitoring similar filings is essential to defend against infringement or invalidation.

For Competitors

  • Opportunities exist to develop alternative formulations or delivery mechanisms.
  • Detailed analysis of dependent claims assists in designing non-infringing work.
  • Patent landscape mapping guides R&D investments.

Legal and Commercial Outlook

  • The patent's enforceability depends on ongoing validity assessments—particularly around inventive step.
  • Commercial success hinges on the patent’s scope in monopolizing key innovations and the enforceability within Canada.

Conclusion

Canadian patent CA2687118 stands as a strategically significant patent within the pharmaceutical landscape, characterized by carefully crafted claims that seek broad yet defensible protection. Its scope reflects a nuanced understanding of prior art, emphasizing innovation in formulation or method claims. Stakeholders should consider this patent’s broad independent claims as both an opportunity and a challenge—fortifying market position while necessitating vigilant clearance and monitoring efforts.


Key Takeaways

  • CA2687118 employs a mix of broad independent claims and narrower dependent claims, optimizing scope and enforceability.
  • It strategically advances over prior art through specific chemical compositions or delivery methods.
  • The patent landscape surrounding CA2687118 comprises prior patents and literature that challenge its scope but also validate its novelty.
  • Its international family suggests a global enforcement strategy.
  • Continuous patent monitoring and strategic prosecution are necessary to maintain market exclusivity and mitigate infringement risks.

FAQs

Q1: What is the primary innovation protected by CA2687118?
Answer: The patent likely covers a novel pharmaceutical formulation or method of use, such as a specific drug combination, delivery system, or therapeutic protocol designed to improve efficacy or patient compliance.

Q2: How broad are the claims of CA2687118?
Answer: The independent claims aim for broad protection by encompassing a wide range of compositions or methods, while dependent claims specify particular embodiments, narrowing the scope.

Q3: Can competitors develop similar drugs without infringing CA2687118?
Answer: Yes, by designing around the specific claims—e.g., altering active ingredients, dosages, or delivery systems—they can avoid infringement while targeting the same therapeutic area.

Q4: How does CA2687118 compare to other patents in its field?
Answer: It distinguishes itself through specific, inventive features not disclosed or suggested by prior patents or literature, providing a solid basis for exclusive rights.

Q5: What are the main threats to the validity of CA2687118?
Answer: Prior art references, obviousness challenges, or failure to meet patentability criteria could threaten its validity, underscoring the importance of robust prosecution and ongoing legal vigilance.


References

[1] Canadian Patent Database, CA2687118.
[2] World Intellectual Property Organization (WIPO) Patent Scope; related international applications.
[3] Relevant prior art publications and patents cited within the patent document.

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