A very important snippet from the comments from Sarah Bird (COO of Moz)

> So, I did what I would want someone to do for me. In January, I called him to give him a personal heads up that we had a problem, that the brand felt too close for us. I told him we had a registered intent-to-use, and that we were planning on launching soon, just like him. I asked him to use a different brand for his future product or that we would have to cancel his mark. He explained to me that his product is different enough from ours that there wouldn’t be confusion. I urged him to talk to his lawyer and get independent advice before he launched his product.