Puma SE has sued Brooks Sports in Indianapolis Federal Court, charging that Brooks alleged advertising for sneakers with nitrogen-infused soles violates Puma’s “Nitro” trademark rights, according to Reuters.

Puma’s lawsuit also accused Brooks of violating a design patent by copying the foam-molding technology Puma uses in its Nitro shoes for Brooks’ Aurora BL running shoes.

A Brooks spokesperson told Reuters that Puma was “abusing trademark law by seeking to prevent competitors from using the term “Nitro” to describe nitro-infused shoes and called the allegations “baseless.”