Soul Edge
In 2001, Edge Games sought revocation of Namco's United Kingdom trademark "Soul Edge" (for the arcade game "Soul Edge") for reasons including an alleged similarity between the "Edge" and "Soul Edge" marks. The opposition failed on all grounds. Nevertheless, Namco had already decided to use the name "Soul Blade" for the PlayStation version in the United States and Europe to avoid potential complications, with the name "Soulcalibur" being used on all sequels for the same reason.