For files such as .doc or .pdf files, you can control what author information is included with the file. As for owner/creator, that relates to the computer user, not necessarily a person. For example, Bob Jones may be the person's name, but if their user name is "jonesy", that is what you'll see as the owner/creator, not "Bob Jones". You can't remove the owner/creator information from a file.
What is the scenario that causes this to be a concern?