Patent and Trademark Resource Center

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  • Are you curious about patents?
  • Would you like to learn about trademarks?
  • Would you like some help to get started?

The California State Library has been a United States Patent and Trademark Office (USPTO) designated Patent and Trademark Resource Center (PTRC), originally called a Patent and Trademark Depository Library, since 1979. Library staff can assist with general questions and provide assistance and instruction in the use of patent and trademark resources.

We provide access to the electronic and print patent and trademark resources the USPTO makes available to PTRCs and the public, all of which are available at no cost. For instance, we have a current collection of full-color plant patents available in print and we have dedicated computers, with extended time limits, to perform patent searches.

Please note that staff cannot perform patent or trademark searches for individuals and cannot give legal advice. For legal advice, please contact a registered patent attorney or agent. More specialized questions should be directed to the USPTO.

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