It seems like the new AEW ring cage concept, Death’s Door, will be sticking around.

AEW filed an application with the United States Patent and Trademark Office to trademark the word Death’s Door for their circular cage which made its debut at Forbidden Door.

The company used the concept for the first time this past Sunday, opting for a round cage with a truss all around it a the top for easier walking, instead of the traditional square cage. The cage diameter was big enough to allow space around the ring for the twelve men who participated in the match.

AEW President Tony Khan credited Mike Mansury, AEW’s Executive Vice President and Head Of Global Production, for coming up with it.