How well does a patentee have to explain how well his invention works against other inventions?

Canada (Federal), Canada

The following excerpt is from Janssen-Ortho Inc. v. Apotex Inc., 2008 FC 744 (CanLII):

No requirement exists for a patentee to explain how well his invention works in comparison to other inventions. (Pfizer v. Ranbaxy, above at para 37.)

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