Originally Posted by Kingfish

You actually have a remedy that most people don?t have. If they are currently using your work in their member?s area, site, tours, promotional stuff, ect. send them a DMCA.

In short unless you gave them a written assignment of rights to use your stuff your company retains copyright in all the materials your company produced. Send their host the same DMCA specifying where your works are on their sites including the URLs. The host will jerk their sites down for copyright violations to avoid copyright liability themselves. Depending on how vital your designs are to their various sites they will have to pay you if they want to keep the sites up. If nobody pays and the sites go down then you know there is nothing to get. Either way it won?t take you more than 30 minutes of work.