Somewhere between fourteen and thirty months after filing, and considerably later in congested technical fields, an envelope or an electronic notification arrives containing an examiner's first substantive view of the application. It will almost certainly reject or object to every claim. This is normal — first actions are adverse in the large majority of cases — and it is not the part that ends applications. What ends applications is the date printed on the front of it.
The response deadlines that follow an examination action are unusual in being both generous and absolutely rigid. There is enough time to do the work properly. There is no forgiveness at all once the outer limit passes. Understanding the shape of the window, what has to be inside the reply, and what the escalating extension fees are actually buying is most of what separates a prosecuted application from an abandoned one.
The action · what starts the clock
What Arrives, and What It Demands
A first action typically contains three kinds of content. There are formal objections — drawing quality, claim numbering, abstract length — which are tedious and cheap to fix. There are objections to clarity and support, arguing that a claim is ambiguous or that the specification does not sustain its breadth. And there are substantive rejections on novelty and inventive step, each citing documents the examiner considers to disclose or render obvious the claimed combination.
The reply term is set on the face of the action. A common arrangement gives three months, extendable month by month on payment of escalating fees to a hard outer limit of six months from the date of the action. Other offices set four months with a shorter extension available, and narrower procedural actions — a requirement to elect between two inventions, or to supply a missing formal document — often carry only one or two months. The variation is exactly why the term is always read off the document rather than assumed, and why the different proceedings a filing can pass through, summarised in this outline of the types of applications and the proceedings that follow them, are worth understanding before the first action lands rather than after.
Two dates matter, not one. The legal deadline is on the action. The working deadline is roughly one third of the way in, because that is the point by which the drafter needs instructions, decisions on which claims to concede, and any test data the argument will rely on. An applicant who returns comments in the final fortnight is not buying a better reply; they are buying an extension.
A rejection is the opening move, not the verdict. The only thing in the envelope that cannot be argued with is the date.
How to read a first action
Completeness · what counts as a reply
What a Complete Response Contains
A reply must address every ground raised, not only the ones the applicant finds answerable. A response dealing with four of five rejections is not a partial success; in most offices it is not a response at all, and the application proceeds towards abandonment as though nothing had been filed. This is the single most common self-inflicted loss in prosecution, and it usually happens because a formal objection buried in the final paragraph of a long action went unread.
The substance of a reply has three components. Amendments, presented in a marked form showing precisely what has been added and deleted, and drawn only from matter already disclosed — no new subject matter may be introduced, whatever has been learned since filing. Remarks, addressing each citation individually and explaining what the cited document does not disclose rather than merely asserting that the claim is different. And, where the argument depends on a technical effect, evidence: measured comparative data carries weight that adjectives do not.
Every amendment is permanent in a sense that catches applicants out. Narrowing a claim to escape a citation creates a record that the narrower scope was necessary, and that record is later used to limit how the granted claim is read. A concession made casually in month twenty to clear an objection can decide the outcome of an infringement dispute a decade later. It is worth being clear about what the right is supposed to cover before conceding anything — the ground covered plainly in this explanation of what a patent is and what it does not do.
Extensions · buying time by the month
What an Extension Costs, Month by Month
Where extensions are available they are usually automatic on payment — no reasons required, no discretion exercised — and they are priced to discourage habitual use. The first month is modest. The second is roughly double the first. By the third the fee is several times the first month's, and by the last available month the cost frequently exceeds the original filing fee. The escalation is deliberate: the office is selling delay and pricing it as a nuisance.
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Month 1
Internal working deadline. Instructions, claim strategy and any comparative data should be with the drafter by now.
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Month 3
The set reply term on a typical action. Filing here costs nothing extra and keeps every later option open.
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Months 4–6
Extension territory. Fees escalate month by month; the sixth month is generally the absolute outer limit.
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Day after
Abandonment takes effect automatically. No warning is issued, and the formal notice arrives weeks later.
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2 months
Typical window from that notice to file a revival petition, with fee and a statement that the delay was unintentional.
Two further costs are easy to overlook. In systems that add back term for office delay, any applicant delay beyond a set threshold — commonly three months from the action — is subtracted from the eventual adjustment, so time bought at the front is taken off the back. And where a reply is filed after an action designated as final, the examiner may decline to enter the amendments at all, which means the extension purchased time that produced nothing.
Abandonment · the quiet ending
How an Application Dies Without Anyone Saying So
Abandonment is not a decision. It is an absence. The day after the outer limit passes without a complete reply, the application ceases to be pending, and no communication is sent to mark the moment. A formal notice typically follows several weeks later, addressed to whatever correspondence address is on file — which is why applicants who have changed address, changed agent or let an email forward lapse sometimes learn of the abandonment months afterwards, when the window to fix it has narrowed considerably.
Revival is usually possible and rarely painless. The standard petition asks for the outstanding reply, a fee that is a substantial multiple of an extension fee, and a statement that the entire delay was unintentional; some offices apply a stricter due-care test requiring documented evidence of a reliable system that failed. The petition itself commonly has to be filed within two months of the notice, or within an outer limit measured in months from the abandonment date, and it will not restore what happened in the meantime: anything published by a third party during the lapse may still be citable, and term adjustment is not returned. Following the response deadlines the first time is dramatically cheaper than reviving an application afterwards.
Nobody tells you when it ends. The application simply stops being pending, and the letter explaining that arrives weeks later.
Why the docket matters more than the argument
Practice · docketing that holds
A Docket That Survives a Busy Year
Prosecution is a correspondence conducted at intervals of months, which makes it uniquely easy to lose track of. Four habits carry most of the load. Diary three dates for every action received, not one: the internal draft date at roughly a third of the term, the set reply date, and the outer limit. Read the action twice, once for the arguments and once purely to enumerate every ground raised, so the reply cannot be partial. Ask for an examiner interview where the office offers one — a twenty-minute conversation regularly resolves an objection that two written rounds would not, and each round saved is four to six months of calendar. And record the date of every filing acknowledgement, because a reply presumed sent and never received is indistinguishable from no reply at all.
The wider point is that the examination phase rewards administration over eloquence. Independent applicants tend to arrive expecting a contest of ideas and find instead a sequence of dated obligations, which is a genuinely deflating discovery — a gap between the imagined and actual life of an inventor that comes up repeatedly in this look at how science fiction shapes what inventors expect of the process, and again in this profile of the working reality behind inventor support. The applications that reach grant are seldom the ones with the cleverest arguments. They are the ones whose owner knew, in month one of a three-month term, what was due and to whom.
These windows sit at the end of a chain of dates that starts on the day the filing receipt is issued, and they are the last of the six set out in the timetable of the first two years. Every earlier date on that list is fixed by the calendar. This one is the first that responds to how the applicant works.
Three months is enough time to answer properly and not nearly enough to answer late. Diary the third week, not the last one.