Hypothetical, to protect the innocent :)
Let's say Google has a product called "Stock Manager". Technically, they call it "Goole Stock Manager". After a trademark search turns up 0 results for "Stock Manager", we assume the reason this trademark does not exist is because it was denied for being too literal.
Now, we come across an opportunity to acquire the domain name "StockManager.com". Let's assume it's a significant investment and that we're not willing to compensate with another name - this is the perfect name. The product we will sell at our new company, StockManager.com, will compete directly with "Google Stock Manager". Just because Google decided to name a product Stock Manager surely doesn't mean that the domain name StockManager.com is now useless, right?
All fear for Big Brother and his 100's of lawyers aside, what is the reasonable thinking here? Would you proceed with the acquisition of "StockManager.com"?