Final. Does that mean it is over?
No. It means the examiner considers the record closed on the issues as they stand, and that what you are permitted to file has narrowed. Applications recover from final rejections regularly.
What changes is that the choice of route now matters more than the wording of the arguments. Each of the three routes has a different cost, a different timetable and a different chance of working.
The timing trap, first
A final action normally prints a three-month period. But under MPEP 706.07(f), if you file a reply within two months of the mailing date and the examiner’s advisory action issues after the three-month date, the shortened period runs to the mailing date of that advisory action. Filing early therefore protects the extension window; filing on day 88 can leave you with an advisory action and no time to act on it.
This is one of the most consequential rules in the whole process, and it is one of the least publicised. Anyone telling you the only date that matters is three months from mailing has not read it.
The three routes
After-final reply under 37 CFR 1.116
Cheapest and fastest, and the examiner has discretion over whether to enter amendments. Works best when the remaining gap is small — a clarifying amendment, or claims that cancel to what was already indicated as allowable.
Request for Continued Examination under 37 CFR 1.114
Pays a fee to reopen prosecution so amendments must be considered. Reliable and correspondingly more expensive, and it adds a cycle of examination time.
Appeal under 37 CFR 41.31
For when the examiner is wrong on the law or the art rather than on the wording. Slow and expensive, and appropriate when the disagreement is substantive and the claims are worth defending as they are.
After-final reply under 37 CFR 1.116
Cheapest and fastest, and the examiner has discretion over whether to enter amendments. Works best when the remaining gap is small — a clarifying amendment, or claims that cancel to what was already indicated as allowable.
Request for Continued Examination under 37 CFR 1.114
Pays a fee to reopen prosecution so amendments must be considered. Reliable and correspondingly more expensive, and it adds a cycle of examination time.
Appeal under 37 CFR 41.31
For when the examiner is wrong on the law or the art rather than on the wording. Slow and expensive, and appropriate when the disagreement is substantive and the claims are worth defending as they are.
The choice depends on facts in the document
Whether any claim was indicated as allowable, whether the examiner raised new grounds in the final action, how far apart the positions actually are, and how much time is left — all of it is in the document. That is what to establish before choosing a route.
37 C.F.R. 1.116
37 C.F.R. 1.114 (RCE)
37 C.F.R. 41.31, notice of appeal
MPEP 706.07(f)
Six months from the mailing date, 35 U.S.C. 133