Where can I get more information about Patents and Trademarks?
The US Patent & Trademark is a good place to start.
Where can I get more information about Copyrights?
The US Copyright Office is a good place to start.
What website can I use for patent searching?
Google Patents is a free service that has patents from the United States and other countries.
Where can I go for trademark searching?
A good place to start is the US Patent & Trademark Office.
Where can I find more information about copyright term and the Public Domain?
A very nice source of information on copyright term and the Public Domain can be found here at Cornell University Library’s Copyright Information Center.