Great Lakes Patent & Trademark Resource Center @ DPL

The Detroit Public Library is a Patent and Trademark Resource Center (PTRC),

supported by the United States Patent and Trademark Office (USPTO).  Specialized reference services relating to patents, trademarks and copyright are provided by highly trained and knowledgeable librarians.  In addition, the Library's business section is of great help for those who seek to market their inventions, products or services.  All services are free and available to the public.  Book and material checkout, however, is subject to DPL circulation rules.

Library Hours

Sunday
12:00 PM - 05:00 PM
Monday
10:00 AM - 08:30 PM
Tuesday
10:00 AM - 08:30 PM
Wednesday
10:00 AM - 08:30 PM
Thursday
10:00 AM - 08:30 PM
Friday
CLOSED
Saturday
CLOSED