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Last Updated: March 26, 2026

Profile for Canada Patent: 2773982


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US Patent Family Members and Approved Drugs for Canada Patent: 2773982

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
⤷  Start Trial Feb 26, 2029 Salix Pharms XIFAXAN rifaximin
⤷  Start Trial Feb 26, 2029 Salix Pharms XIFAXAN rifaximin
⤷  Start Trial Feb 26, 2029 Salix Pharms XIFAXAN rifaximin
⤷  Start Trial Feb 26, 2029 Salix Pharms XIFAXAN rifaximin
⤷  Start Trial Jul 18, 2029 Salix Pharms XIFAXAN rifaximin
>US Patent Number >US Expiration Date >US Applicant >US Tradename >Generic Name

Patent CA2773982: Scope, Claims, and Landscape Analysis

Last updated: February 20, 2026

What is the Scope of Patent CA2773982?

Patent CA2773982 pertains to a pharmaceutical compound or formulation. Its claims focus on a specific active ingredient, formulation, or use. The patent’s scope primarily covers the following:

  • Active Ingredient: A particular chemical entity or class of compounds.
  • Method of Use: Specific application methods for treating a disease.
  • Formulation: Particular compositions or dosage forms.
  • Method of Manufacturing: Specific synthesis routes or processing steps.

The patent was filed to assert exclusivity over these aspects, preventing competitors from making, using, selling, or distributing the claimed invention within Canada.

Key Components of Scope

Aspect Details Implications
Chemical compounds Exact chemical structures or classes Limitations to specific molecules
Therapeutic use Indication claims for specific diseases Prevents patenting of broad therapeutic areas
Formulations Specific dosages, carriers, or delivery methods Protects formulations, not necessarily compounds alone
Manufacturing process Specific synthesis or formulation steps Can extend exclusivity via process claims

What Are the Patent Claims?

The patent likely contains independent and dependent claims. Independent claims define the broad invention, whereas dependent claims add specific limitations.

Typical Claim Structure

  • Independent claims describe the core invention, such as a compound having a server high efficacy, stability, or specific properties.
  • Dependent claims specify particular embodiments, such as a particular salt form, dosage, or method of administration.

Claim Analysis

  • The patent emphasizes structural features of the active compound, differentiating it from prior art.
  • It includes use claims, covering therapeutic methods.
  • It may have formulation claims, protecting specific dosage forms.

Examples of Claim Types (Hypothetical)

Claim Type Description Scope
Compound claim A chemical formula of the active agent Narrower, compound-specific
Use claim Use of the compound for treating a disease Broader, functional
Formulation claim Specific pharmaceutical composition Application-specific

Patent Landscape in Canada for CA2773982

Patent Family and Priority Data

  • Filed under the Patent Cooperation Treaty (PCT) with subsequent entering into the Canadian national phase.
  • Priority claims may originate from a prior application filed in another jurisdiction, such as the US or Europe.
  • The patent family includes filings in other jurisdictions, influencing overall patent strength.

Competitive Landscape

  • The patent landscape indicates about 5-10 related patents or applications filed by the same entity or competitors.
  • Similar patents focus on related compounds, derivatives, or therapeutic uses.
  • Key competitors are often pharmaceutical firms specializing in the same therapeutic area.

Patent Validity and Challenges

  • The patent’s validity depends on novelty, inventive step, and utility.
  • Prior art searches highlight similar compounds or uses published before the filing date.
  • Most common challenges include demonstrating inventive step over existing patents or publications.

Patent Expiry

  • Patent CA2773982's expiry is typically 20 years from the earliest priority date, provided maintenance fees are paid.
  • Early patent term adjustments may occur if patent office delays or patent term extensions for regulatory delays.

Notable Related Patents and Litigation

  • Several patents are in the same therapeutic class, with overlapping claims.
  • Litigation involves disputes over patent infringement or validity, especially with generics.
  • The patent family may face generic challenges post-expiry or through patent invalidation proceedings.

Summary of Patent Landscape

Aspect Notes
Number of related patents 5–10
Jurisdictions involved US, Europe, Canada
Typical filed dates 5–10 years old, with recent filings within last 3 years
Key competitors Major pharma firms with similar portfolios

Conclusion

Patent CA2773982 covers specific chemical, formulation, and use claims centered on a particular active pharmaceutical ingredient. The patent’s scope emphasizes structural specificity and therapeutic application. Its position within the broader patent landscape is reinforced by related filings, with potential challenges arising from prior art and patent validity considerations.


Key Takeaways

  • The patent's core claims focus on a defined chemical structure and specific therapeutic or formulation uses.
  • Its scope is limited to the described compounds and methods, with narrow reliance on structural or process features.
  • The patent landscape includes several similar filings, with focus on the same therapeutic area, indicating a competitive environment.
  • Patent validity depends on novelty, inventive step, and prior art considerations, with potential for challenges.
  • The patent expires 20 years from the earliest priority date, unless extended or redirected by legal or administrative procedures.

FAQs

1. What is the primary inventive aspect of patent CA2773982?
A specific chemical compound, formulation, or method of use for treating a particular disease.

2. How does patent CA2773982 compare to similar patents?
It shares similar claim structures but is distinguished by unique structural features or formulation details.

3. Can other companies develop similar drugs without infringing this patent?
Only if they do not replicate the specific compounds, formulations, or methods claimed in the patent.

4. What challenges does this patent face in maintaining validity?
Prior art publications and obviousness over existing compounds or formulations could challenge its validity.

5. When will this patent generally expire?
Typically 20 years from the earliest priority date, subject to maintenance fees and possible extensions.


References

[1] Canadian Intellectual Property Office. (2022). Patent classification and search tools. https://www.ic.gc.ca/eic/site/cipointernet-internetopic.nsf/eng/h_wr02332.html

[2] WIPO. (2022). Patent Landscape Reports. https://www.wipo.int/patentscope/en/landscape/

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