RIM has fueled speculation about its BlackBerry-influenced tablet with a recently discovered trademark filing. An application at the Canadian Intellectual Property Office (CIPO) for a SurfBook name is vague about the uses of the name but would cover all of the likely devices RIM could make, such as a tablet, a computer or a smartphone. A matching trademark hasn't the US, but it's unknown if RIM is simply waiting or is considering using different names in different countries.