You can try the following method. As mentioned above, the way to enter the copyright symbol is to first hold down the Alt key, and at the same time press 0, 1, 6, and 9 on the small keyboard; the way to enter the trademark is to first press Hold down the Alt key and press 0, 1, 5, and 3 on the keypad in sequence. I'm using a laptop and don't have a small keyboard, so I can't test it.