What kind of laptop? One running Windows? What font and character set?
Under Windows, try Start -> Programs -> Accessories -> System Tools -> Character Map. There you can select a font and view all of the available characters and symbols. The program will show you the keystroke or keystroke combination you can use to access the selected character or symbol, or you can copy the character to the clipboard and then paste it into another program.
For most Western language character sets and code pages, holding down the ALT key and pressing 0169 on the numeric keypad will produce a copyright symbol.