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Technology domain (CPC subclass)

Domain C21D

5,828 applicationsExamined mostly in 1733, 1734, 1784, 1735

3-year grant rate
68%
allowed within 3 years of the first action
Allowance rate
72%
range 71% to 74%
Rejections before allowance
1.8
Months to first action
23.6 mo

In plain words

With C21D, 68% of applications were allowed within three years of the first office action. The first action takes 23.6 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 5,828 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 C21D

ExaminerCases in C21DOverall allowance rateDifficulty
Docket Central3852%Easier than peers
Jenny R Wu33265%Typical for peers
Anthony M Liang25584%Easier than peers
Deborah Yee24374%Easier than peers
Jophy Stephen Koshy23867%Typical for peers
Brian D Walck22560%Harder than peers
Jie Yang22464%Typical for peers
Scott R Kastler20781%Easier than peers
Nicholas A Wang14353%Harder than peers
Jessee Randall Roe13780%Easier than peers
Xiaowei Su12970%Typical for peers
Michael Aboagye12075%Typical for peers
Michael Eugene La Villa11674%Typical for peers
John A Hevey10462%Typical for peers
Rebecca Y Lee9339%Harder than peers
Weiping Zhu8953%Harder than peers
Vanessa Tibay Luk8756%Typical for peers
Daniel J Schleis7973%Easier than peers
Christopher S Kessler7965%Typical for peers
Katherine A Christy7672%Typical for peers
Stephani A Hill7428%Harder than peers
Lois L Zheng6275%Typical for peers
Adil Abdul Wajid Siddiqui5764%Typical for peers
Ricardo D Morales5682%Typical for peers
Danielle Marie Carda5483%Typical for peers