be trademark. Might
If you think you have something, then talk to a copyright attorney in your jurisdiction. Furthermore, you will need to do that fairly quickly. While other forms of copyright issues can be defended at the will (and on the time frame) of the intellectual property holder, trademark is more of a use it or lose it deal. If you don't defend trademark, you will lose it.
So at least go in for a first consultation. Those are often free. And ask! Bring any documentation you've got and do your best to make it a productive session.