At present, many domestic applicants entrust domestic agents to seek American agents to represent their cases; If the purpose of applying for a patent is to protect their own technology, it is recommended that the applicant can search online for the past US cases represented by their agent, as well as how they defended themselves during the case examination process. This is because some US agents do not have much experience and only help others sign and submit patents, making it difficult to protect their rights even after the patent is granted.