Log on to the American Trademark Inquiry Network, and enter the patent name, patent number, WeChat official account and other information in the menu according to the country where the patent is located.
1. brainstorm and write down the key words that describe your invention.
2. Use the website of the U.S. Patent Office and CPC to search for the words you invented.
3. Determine the most relevant CPC.
4. Use the confirmed CPC classification to search in the authorized patent database.
5. According to the results of the fourth step, further analyze the patents with strong correlation.
6. Use the confirmed CPC classification to search in the published patent database.
7. Expand the scope of patent search.
USPTO: The U.S. Patent and Trademark Office (PTO or USPTO) is a subsidiary of the U.S. Department of Commerce, providing inventors and related inventions with intellectual property certificates such as patent protection and trademark registration.