I'm not an attorney, but everything I've ever read on the subject seems indicate that unless there is some damage to the company's reputation or lost sales or clients due to the similarity of company names, domain names or product names there would be little likelihood of them recovering damages. Of course, if you registered a name of a large enough company or it's product they don't need to prove losses because they've got the money to out spend you on legal fee's so they can do it on principal without having to justify the expense.