While this case is and sounds completely stupid, they actually have to do this. This is because if they don’t, and somebody really copies their stuff later on, there’s a chance a judge will say: You didn’t care about these other cases before so apparently you don’t care about your brand/copyright/patents/insert other stuff, so we will allow party B to continue copying your stuff.
I don’t remember exactly where I read this but apparently there is a law that says if you don’t defend your stuff all the time, someone else might actually legally be allowed to copy it.