Patent Law Seminar (Afshar)

Google Patents covers the entire collection of issued patents and millions of patent application made available by the United States Patent and Trademark Office.

Use this alphabetical index to find the class and subclass that best represent the invention that you are searching for.

Use this manual to search for patents by classification number.

Open-access resource for global patent search and analysis over 100 million patent records from 95 issuing organizations; scholarly search and analysis; and PatCite linking patents and scholarly articles.

A website for a quick download (PDF) of US patents, if you have the patent number.

Using PATENTSCOPE you can search 74 million patent documents including 3.5 million published international patent applications (PCT).

Patent and Trademark Resource Center's guide to searching for U.S. Patents.

A Webinar from the USTPO outlining how to perform a basic patent search.