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Have your office action open — a few of these answers are copied straight off it. Everything else is about your own business, in your own words, and it is the only thing your arguments will be built from. Nothing is charged until the questions below are answered and we have confirmed markanswer can actually help.
Your deadline, and the number a lot of pages still get wrong
You have 3 months from the issue date printed on the office action — not from the day the email arrived, and not from the day you opened it. One extension of 3 more months is available for $125, and you have to request it before the original date passes (37 C.F.R. §2.62(a)(2)).
This changed on December 3, 2022. Before that the period was a flat six months, and a great deal of guidance still published online says so. If a page tells you that you have six months by right, it is describing the old rule.
markanswer prepares self-help documents only. It is not a law firm, it provides no legal advice, and it never represents anyone before the USPTO. You review the response against your own office action, correct anything that is not true of you, sign it and file it yourself through TEAS before your deadline. No outcome is ever promised.