Parties: The Plaintiff was Dow Chemical Canada ULC; the Defendant was ExxonMobil Chemical Patents Inc.

Subject Matter: This Federal Court matter (T-795-26) is a patent impeachment action filed in Ottawa on February 17, 2026, by Dow Chemical Canada ULC against ExxonMobil Chemical Patents Inc.. The plaintiff seeks a declaration that claims 1 to 33 of Canadian Patent No. 3,185,448, titled “Integration of Hydrogen-Rich Fuel-Gas Production with Olefins Production Plant,” are invalid and void under the Patent Act. The case is ongoing.

Date: The hearing was set on December 9, 2026.

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

Amount: Security for costs of $15,000 was ordered to be posted by the Plaintiff.