Patent Term Adjustment (PTA)
Failure to take certain actions within specified time frames (14-4-4-4):
Failure to initially act on the application within fourteen (14) months after filing/national stage entry date
Failure to act on a reply or appeal brief within four (4) months after date the reply or appeal brief is filed
Failure to act on an application within four (4) months after a BPAI or court decision if allowable claims remain in the application
Failure to issue the patent within four (4) months of the date the issue fee was paid and all outstanding requirements were satisfied