Office Action deadline calculator

Enter the mailing date and the action type to get the reply period, every extension date, and the six-month statutory limit.

Enter the mailing date printed on your Office Action and the type of action, and this calculator returns the end of the reply period, the date each one-month extension would move it to, and the six-month statutory limit that no extension can pass. Weekend and federal-holiday adjustment under 37 C.F.R. 1.7(a) is applied, and the rules used are listed with the result. The calculation is arithmetic on published rules, not legal advice — verify it against the document and with a registered practitioner.

I just want to know the date.

Two fields and you have it, along with what the extension dates would be and where the wall is.

What the calculator does and does not do

It counts calendar months from the mailing date, clamping to the last day of a shorter month.

It moves an end date that falls on a weekend or a federal holiday to the next business day.

It shows every extension step under 37 C.F.R. 1.136(a) and stops at the six-month statutory limit.

It does not know whether extensions are available in your particular case — some actions state that they are not.

It does not apply the final-action variable-period rule in MPEP 706.07(f), which depends on when an advisory action is mailed. It tells you the rule exists.

Want the type and date read out of the document instead?

Upload the PDF and we will extract the mailing date, the action type and the printed reply period, each with the page it came from.

Upload my Office Action

Questions people ask

The mailing date printed on the front page of the Office Action, not the date you received it and not the date on any covering email. Periods run from the mailing date.

Enter the printed period. The document is the best evidence of the period it set, and the calculator will use it in preference to the typical period for that action type, noting that it did so.

Use it to plan, then verify. It is deterministic arithmetic over published rules, and the rules it applied are shown with every result, but a case-specific rule may apply to your application that a calculator cannot know about.

Where this comes from

Every statement of law or procedure on this page traces to a primary source you can check yourself.

Last reviewed August 30, 2026

How your Office Action deadline is calculated

The reply period runs from the mailing date. How the three-month and two-month periods work, what extensions buy, and the six-month wall.

Your Office Action says FINAL

What a final Office Action restricts, the practical deadline hidden in MPEP 706.07(f), and the realistic options: after-final reply, RCE or appeal.

You missed the Office Action deadline

What abandonment means, when a petition to revive under 37 CFR 1.137 is available, and what to do in the first hour.

Upload your Office Action and we will analyze it

Send the PDF and get the grounds of rejection, the dates and the reply period back. No account, no payment, private storage.