How long is the patent application time in the United States?

Recently, it was reported that China became one of the five countries with the largest number of patents in the United States for the first time. With the increasing awareness of national intellectual property rights in recent years, more and more enterprises know how to use intellectual property rights to protect their products from entering the international market. The United States is the world leader in finance and trade, and the upsurge of patent application in the United States is rising year by year. The time of American patent application has become a question that many people want to know. How long does it take to apply for a patent in the United States? What is the application time of American patent? The filing time of American invention patent is 1. The applicant receives the acceptance notice within 1-2 months from the date of application; 2. The applicant receives the announcement within 18 months from the filing date (or priority date); 3. The applicant has received the notice of examination opinions to reply (substantive examination), and the substantive examination time is about 1 year; 4. Authorization and announcement. American design patent application time: 1. The applicant receives the acceptance notice within 1-2 months from the date of application; 2, may receive a notice of review opinions within one year; 3. Authorization (about 1.5 years). To sum up, the application time for American invention patents is about 2-3 years, and that for American design patents is about 1.5 years.