U.S. Court of Appeals for the Ninth Circuit

Uhl v. Roblox Corporation

September 3, 2026

Summary

The Ninth Circuit affirmed the district court’s denial of Roblox’s motion to compel arbitration, holding that Roblox waived its right to arbitrate by knowingly and intentionally litigating the merits of the case. The court applied the two‑element “knowledge and inconsistent acts” test for waiver and found both elements satisfied.