The official United States Patent and Trademark page offers full text information on current and past patents and trademarks. It also has information on how to apply such as the necessary forms and fees.
The website for the European patent office is the place to start if you are looking for information on foreign patents. It covers both European and non European patents.
The official United States Copyright page offers information on how to get a copyright as well as historical information on current and past United States copyrights.
