American invention patent application time:
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.
I hope the above content can help you.