My query is
i. Approximate time taken by USPTO to issue patent after payment of issue fee.
ii. For payment of first maintenance fee, 3.5 years period is counted from date of grant or from priority date.
iii. If counted from priority date, then for application for which prosecution time taken is more than 3.5 years from date of priority (say 6 years), what is the time limit (normally allowed) for payment of first maintenance fee after grant.
Thanks in advance.