The cost of applying for a U.S. invention patent mainly includes three parts: (1). The official fee for applying for a U.S. invention patent is currently US$1,310 for large entities, and half of the fee for small entities; (2 ) U.S. patent attorney fees, of which U.S. patent attorney fees range from 200 to 700 US dollars per hour, and a total price can also be determined; (3) Chinese patent agency fees are generally around 5,000 per case; generally speaking , an ordinary U.S. invention patent costs US$6,000-8,000.