- Parties: The plaintiffs were Fittes Canada Inc. and 2721111 Ontario Inc. The defendant was Zion Building Supplies Ltd.

- Subject Matter: This Federal Court matter (Court File No. T-2991-24) is a patent infringement action in which the plaintiffs, Fittes Canada Inc. and 2721111 Ontario Inc., allege that the defendant, Zion Building Supplies Ltd., has directly and by inducement infringed claims 1-11 of Canadian Patent No. 3,008,655 (the "655 Patent"), titled "Register Assembly," by distributing, offering for sale, and selling air vent register assemblies in Canada. The defendant denies infringement, asserts that the 655 Patent is invalid and void ab initio on grounds of obviousness and improper inventorship, and has filed a counterclaim seeking a declaration of invalidity under section 60(1) of the Patent Act. The case is ongoing.

- Date: The case management conference was set on April 30, 2026.

- Venue: This was a federal case before the Federal Court.

- Amount: No financial award was specified.