Someone just reserved a business name in my state, the same I had been using for my business, can I get in trouble?

We created a General Partnership, got a Federal Employer Identification Number, and have filed income tax using the name of the company. We opened an account at the Virginia Department of Taxation website and have registered for Pass Through Entity Tax. We forgot to reserve a name in the Virginia Court and to get a Virginia Business Licence. It is a cleaning business, and we received an offer from someone selling their cleaning schedule. We bought it but we were deceived. The person who sold us the schedule was sending messages to his former clients saying bad things about us, and got most of his clients back(the ones he sold to us through the schedule). We sent emails to those clients explaining the situation. A day after we sent our email, he realized we had not registered a name for our business in Virginia and did so himself. He reserved the same name we had been using and got a Virginia Business Licence with it. Is there anything he can do against us for having used this name?