Search novelty requirements, utility standards, prior art analysis, claims drafting, patent prosecution, and more — backed by real case law.
A patent application must demonstrate novelty, utility, and non-obviousness — each tested against a vast body of prior art and case law — Casey searches millions of court decisions to return verified rulings on patentability standards and prosecution outcomes.
A patent application must demonstrate novelty, utility, and non-obviousness — each tested against a vast body of prior art and case law — Casey searches millions of court decisions to return verified rulings on patentability standards and prosecution outcomes.
Real Scenarios
1
Novelty and Anticipation
An invention must be new to qualify for a patent. Courts assess whether prior art discloses all essential elements of the claimed invention. A single prior reference that anticipates the claim can defeat the entire application.
Prompt:
“What constitutes anticipation that destroys novelty in a Canadian patent application?”
Casey returns decisions where courts found anticipation based on prior publications, prior use, or prior sales, how judges applied the disclosure test, and what evidence was sufficient to establish that the invention was not new.
2
Utility and Promise of the Patent
Canadian patent law requires that an invention be useful. The promise doctrine historically required inventors to demonstrate every promised utility, though recent case law has refined this standard. Understanding the current test is critical for drafting applications.
Prompt:
“How do courts assess the utility requirement for patents after the AstraZeneca decision?”
Casey surfaces rulings applying the post-AstraZeneca utility framework, how courts identified the promised utility from the patent specification, and what level of evidence satisfied or failed the usefulness requirement.
3
Prior Art Searches
Thorough prior art analysis is essential before filing. Courts evaluate what a skilled person would have known at the relevant date, including published patents, academic literature, and public demonstrations. Missing prior art can invalidate a granted patent.
Prompt:
“How broadly do courts define prior art when assessing patent validity?”
Casey retrieves decisions defining the scope of prior art, how courts determined the relevant date, what types of disclosures qualified as prior art, and how the person skilled in the art standard was applied across different technology fields.
4
Claims Drafting and Interpretation
Patent claims define the scope of protection. Courts interpret claims purposively, considering the specification and the knowledge of a skilled reader. Poorly drafted claims can render a patent unenforceable or narrower than intended.
Prompt:
“How do Canadian courts interpret ambiguous patent claims?”
Casey returns rulings on purposive claim construction, how courts resolved ambiguity by reference to the specification and prosecution history, and when claims were found too broad, too narrow, or insufficiently supported.
5
Patent Prosecution and Office Actions
The prosecution process involves exchanges between the applicant and the patent office. Rejections must be addressed with amendments or arguments. Understanding how courts view prosecution history helps applicants respond effectively to office actions.
Prompt:
“Can prosecution history be used to interpret patent claims in Canadian courts?”
Casey surfaces decisions on the role of prosecution history in claim interpretation, how courts treated amendments made during prosecution, and whether statements to the patent office limited the scope of granted claims.
6
Obviousness and Inventive Step
Even if an invention is novel, it must not be obvious to a person skilled in the art. Courts apply a structured test that considers common general knowledge, the inventive concept, and whether any differences from prior art would have been obvious to try.
Prompt:
“What test do Canadian courts apply to determine if a patent is obvious?”
Casey retrieves rulings applying the Sanofi four-step obviousness test, how courts identified the person skilled in the art, what constituted common general knowledge, and when an invention was found obvious to try versus truly inventive.
Real Scenarios
An invention must be new to qualify for a patent. Courts assess whether prior art discloses all essential elements of the claimed invention. A single prior reference that anticipates the claim can defeat the entire application.
Prompt:
“What constitutes anticipation that destroys novelty in a Canadian patent application?”
Casey returns decisions where courts found anticipation based on prior publications, prior use, or prior sales, how judges applied the disclosure test, and what evidence was sufficient to establish that the invention was not new.
Canada's patent prosecution process can take several years, and the first-to-file system means that even a single day's delay in filing can cost an inventor their rights if someone else files a similar application first.
Ask Casey your question and get answers backed by real case law — free for the public, powerful for professionals.