The United States Patent Office (USPTO) has taken many measures to shorten the patent examination cycle. First of all, USPTO has implemented accelerated examination plans, such as "patent accelerated examination plan" and "patent priority examination plan", so that eligible applicants can speed up the examination process by paying extra fees or cooperating with patent offices in other countries. Secondly, USPTO implements internal reform, increases the number of examiners and improves the efficiency of examination. In addition, USPTO has also implemented electronic review systems, such as "Electronic Application System" and "Electronic Review System", so that applicants can submit applications and documents online, and examiners can process and review applications more quickly. The purpose of these measures is to improve the efficiency of review, shorten the review cycle, and promote innovation and intellectual property protection.