What does “patent pending” mean?
Sometimes inventors may wish to market their inventions without waiting for the patent to issue. The term patent pending may be marked upon a product as soon as, but never before, the patent application is submitted to the PTO. This term serves as a warning to others that a patent on the invention may be issued shortly. However, until the patent actually issues, another party can make, use, and sell the invention. Once the patent issues, the actual patent number replaces the patent pending marking.