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Technology domain (CPC subclass)

Domain E21F

343 applicationsExamined mostly in 3672, 3678, 3762, 3749

3-year grant rate
71%
allowed within 3 years of the first action
Allowance rate
75%
range 70% to 80%
Rejections before allowance
1.6
Months to first action
17.9 mo

In plain words

With E21F, 71% of applications were allowed within three years of the first office action. The first action takes 17.9 months on average.

Timeline

Applications by filing year: drag across the years to study a period

Allowed in green, abandoned in red, pending in grey. The figures above and every chart that can be recomputed by filing year follow the span you pick; the rest are marked all years.

Ask the record

Questions practitioners ask, answered from 343 applications

Grant rate from the first action

Share allowed, by months after the first office action

The gold line is this record and the blue line is all domains. The marker is the three-year grant rate.

Outcome simulator

Where you are, what you do next, and the odds that follow

A model of this record’s own transitions: each examiner action, the response to it, and what came next. Thin data borrows from all domains.

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Prosecution paths

How prosecution actually unfolds

Every application’s sequence of examiner actions, from the first action to the outcome. Hover a band for the count.

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Compared with peers

Against the art unit, the tech center and the USPTO

The same figures for this record, all domains, the tech center and the whole office.

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Allowance over time

How fast applications are allowed, or abandoned

Share allowed (gold) and abandoned (red) by month since filing, with pending cases counted only while they are pending.

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Rejection fingerprint

What gets rejected, by statute

Share of office actions raising each ground; blue is all domains.

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What works

Allowance by strategy used

Allowance rate among decided cases where each move was used at least once, against all domains.

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Interviews

Does an interview help?

Allowance with and without an examiner interview, and how often interviews happen.

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Odds by round

Chance the next action is an allowance

After the first, second and later rejections.

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Response clock

Days from a response to the next action

How long the examiner takes to act once you have answered.

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Quarter-end timing

When allowances land in the fiscal quarter

Allowances by week of the USPTO fiscal quarter. An even spread would put 15% in the last two weeks.

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Appeals

What happens on appeal

Appeals filed, briefs, examiner’s answers, and how the Board decided.

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Trend

Allowance rate by filing year

Is it getting easier or harder? Gold is this record, blue is all domains.

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Inventors

Who invents most in this domain

Inventor 135 apps
Inventor 230 apps
Inventor 325 apps
Inventor 420 apps
Inventor 515 apps
Inventor 610 apps
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Places

Where it is invented

City 181 apps
City 272 apps
City 363 apps
City 454 apps
City 545 apps
City 636 apps
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Examiners

Who examines E21F

ExaminerCases in E21FOverall allowance rateDifficulty
Janine Muir Kreck2680%Typical for peers
Docket Central162%Easier than peers
Michael Alan Goodwin1580%Typical for peers
Sunil Singh1470%Typical for peers
Frederick Lyndon Lagman1285%Easier than peers
Carib A Oquendo1080%Easier than peers
Benjamin F Fiorello978%Easier than peers
Dana K Tighe677%Typical for peers
Sean D Andrish673%Harder than peers
Edwin J Toledo-Duran571%Harder than peers
Allen Schult470%Typical for peers
James R Bidwell493%Easier than peers
Daniel Previl487%Easier than peers
Keith Campbell391%Easier than peers
Helena Kosanovic348%Typical for peers
Brittany E Towns332%Harder than peers
Jonathan J Cotov362%Typical for peers
Douglas A Hess392%Easier than peers
Ronak C Patel350%Typical for peers
Lester III Rushin390%Typical for peers
Frances F Hamilton356%Harder than peers
Mark T Le374%Typical for peers
Angelisa Hicks365%Harder than peers
Stacy N Lawson366%Typical for peers
Joseph David Anthony376%Easier than peers