Re-registered
standard patent (R)

Original grant
standard patent (O)

Under Exam

Granted

Granted 

Maintenance fee

Renewal fee

Renewal fee

Substantive exam

Grant of patent
(if overcome)

Examination notice

1st OA: 4 months to respond 
2nd OA: 4 months to respond 

Provisional decision of refusal

Request to review

Review opinion

Further Review opinion

2 months

Final decision

2 months

2 months