Corporate name registrations are not included. Trade names, assumed names, and fictitious names are also not generally included, but may be identified for some states. If a trademark is not found in the database, it does not necessarily mean that the trademark is available for use.
Registration does, however, offer a greater degree of protection from infringement.
Before a mark is adopted, additional searching is recommended, especially for common law usage, i.e., marks in use but not registered. Records for some marks include images. Used under license. Used under license. For The Dialog Corporation's Redistribution and Archive Policy, enter HELP ERA online.