The US Patent and Trademark Office is an agency of the Department of Commerce.

United States Patent and Trademark Office

The US Patent and Trademark Office is part of the Department of Commerce.

A Patent and Trademark Deposit Library is a library designated by the US Patent and Trademark Office to house patent and trademark records and make them available to the public. A great deal of information can be found at the website linked below.

The first US patent was issued in 1790, the first Superintendent of Patents was recognized as separate from the Department of State in 1802, and the US Patent and Trademark Office was created by a revision of patent laws in 1836.