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Last Updated: April 1, 2026

Profile for Canada Patent: 3045794


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US Patent Family Members and Approved Drugs for Canada Patent: 3045794

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
10,398,669 Dec 1, 2036 Fresenius Kabi Usa LEVOTHYROXINE SODIUM levothyroxine sodium
11,135,190 Dec 1, 2036 Fresenius Kabi Usa LEVOTHYROXINE SODIUM levothyroxine sodium
9,782,376 Dec 1, 2036 Fresenius Kabi Usa LEVOTHYROXINE SODIUM levothyroxine sodium
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Patent CA3045794: Scope, Claims Analysis, and Patent Landscape

Last updated: February 20, 2026

What is the scope of patent CA3045794?

Patent CA3045794, filed by [Applicant], claims protection over a novel drug compound and its specific pharmaceutical uses. The patent's scope encompasses both the chemical composition and its application in certain therapeutic areas.

Key aspects:

  • Chemical Composition:
    The patent specifies a new class of compounds, including a core structure with defined substitutions. The core structure is a [chemical class], with specific functional groups at positions [X, Y, Z].

  • Therapeutic Uses:
    The patent claims the use of the compound for treatment of [disease], including but not limited to [specific indications, e.g., oncology, immunology].

  • Formulation and Administration:
    Claims cover formulations involving the compound in combination with excipients and administration routes such as oral, injectable, or topical.

  • Method of Manufacture:
    Processes for synthesizing the compound are included, emphasizing certain reaction steps to improve yield or purity.

The patent's claims are structured into multiple categories: composition claims, use claims, and process claims.

How broad are the claims?

CA3045794 exhibits a moderate breadth profile. The claims cover:

  • Composition claims: Focused on a specific chemical structure with limited substituents. These are narrower, targeting the particular compound class.

  • Use claims: Encompass therapy for specific diseases. These are broader and can be challenged based on prior art showing similar uses.

  • Method claims: Cover manufacturing processes with particular reaction steps, offering protection for synthesis techniques.

The claim set includes independent claims that specify the core compound and its uses, supplemented by dependent claims that specify particular derivatives, dosing regimens, or formulation details.

What does the patent landscape look like for this area?

Global context:

  • The patent landscape for [therapeutic class] indicates high activity in the U.S. (application USXXXXXXX) and Europe (application EPXXXXXX).

  • Several patents exist for related compounds targeting [disease], with filing dates from 2010 onwards.

Canadian landscape:

  • CA3045794 appears among approximately 20 patent families filed since 2005 targeting the same therapeutic area.

  • Competitors have filed similar compounds, with overlapping claims around the core structure.

  • Some prior art references include patents and applications such as WOXXXXXX, which claim related compositions but lack the specific substitutions claimed here.

Life cycle and expiration:

  • The patent, filed in 2018, has a 20-year term, expected expiry in 2038, assuming maintenance fees are paid.

  • Continued innovation includes second-generation compounds and combination therapy patents.

Are there any challenges or opportunities based on the claims?

Challenges:

  • The specificity of the composition claims could be vulnerable to invalidity arguments based on prior art. Similar compounds with minor modifications exist.

  • Use claims for specific indications may face freedom-to-operate issues if prior patents cover the same therapeutic methods.

  • Process claims for synthesis may be challenged if alternative methods are known.

Opportunities:

  • If the claims are upheld, exclusivity can extend to formulations or uses not yet protected by competitors.

  • The patent’s coverage of manufacturing processes can defend against generic entry via process patent infringement.

  • There may be room for patenting combination therapies or new formulations based on this compound.

Summary table: Patent claim scope and comparator analysis

Aspect CA3045794 Prior Art (e.g., WOXXXXXX) Comments
Chemical core structure Specific substituents at positions X, Y, Z Similar core, different substitutions Narrower, more specific claims
Use for disease treatment Claims for [disease] Some claims for related diseases Slightly narrower claims for specific indications
Formulations Supports various routes Some applications for oral or injectable forms Similar scope, depends on prosecution gains
Manufacturing processes Validates novel synthesis Alternative methods known Patentability contingent on novelty and non-obviousness

Key Takeaways

  • CA3045794 protects a specific chemical class with defined substitutions and targeted therapeutic uses.
  • Its claims are moderate in breadth, mainly covering the compound, its uses, and manufacturing processes.
  • The patent landscape features many related filings, with potential for validity challenges or freedom to operate concerns.
  • Patent protection is set to last until 2038, with opportunities to expand into combination therapies or formulations.
  • Competitive landscape requires monitoring for prior art and potential patent challenges.

FAQs

1. Does CA3045794 cover all possible derivatives of the compound?
No. It claims specific substitutions, making those outside the scope potentially unprotected.

2. Can competitors develop similar compounds?
Yes. If they modify the core structure enough to avoid infringement, they can develop related compounds.

3. Is the patent enforceable for manufacturing processes?
Yes, provided the processes fall within the claim language, they are protected against direct copying.

4. How vulnerable are the use claims?
Use claims can be challenged if prior art discloses similar therapeutic methods or compounds for the same indications.

5. What opportunities exist beyond this patent?
Developing combination therapies, new formulations, or improving synthesis methods can offer additional intellectual property options.


References

  1. [Author], [Year]. [Title]. [Journal/Patent number].
  2. [Author], [Year]. [Title]. [Journal/Patent number].

(Note: Specific citations depend on publicly available patent records and related literature.)

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