Use this link to get to the  USPTO WEBSITE

Search for US Patents and Published Applications

Note: To find how to search for patents click here, and to find out what the search fields are, click here. There are many fields but if you do a search, you should be able to find the field for which you are looking.

To search for Trademarks, click here and look for the rectangular button that says "search our trademark database (TESS)".

Use this link to reach the US Copyright Office.

Click here to find access the registration portal and to learn more about the different types of copyrightable works.