Let's get some terminology straight.  Your words are trademarks if you use them in commerce.   What you've submitted was an application for REGISTRATION of that trademark.    You most certainly be sued and in fact, if there is found to be a likelihood of confusion, you could lose.   You don't have registration yet.   The other trademark holder can certainly object to you being granted registration.    If there is no overlap really in your use. either in the product lines or geographic distribution, you might be OK.