How long does it take for an American invention patent?

Kit Intellectual Property: When is the patent application in the United States? When is the application time of American invention patent?

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.