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◈ USPTO PATENT EXAMINER STATISTICS

Examiner Chi Ho A Lee

TECH CENTER 2400 · 3 ART UNITS · 1,566 DECIDED APPLICATIONS · LAST ACTION JUL 2026
ALLOWANCE RATE = SHARE OF DECIDED APPLICATIONS (ALLOWED + ABANDONED); PENDING EXCLUDED
OVERALL ALLOWANCE RATE · POOLED ACROSS 3 ART UNITS
93%vs 79% weighted peer average+14 pts

Examiner Chi Ho A Lee has allowed 1,453 of 1,566 decided applications.

1,453 allowed
Plus 55 applications still pending — not yet decided, so excluded from the rate.
The weighted peer average (79%) is each art unit's average below, weighted by this examiner's applications in it (3 art units).
DATA UPDATED JULY 22, 2026
AU 2472 · 91%AU 2475 · 99%AU 2416 · 89%

What the data says.reading this examiner

Examiner Chi Ho A Lee maintains a 93% allowance rate across more than a thousand decided applications in Technology Center 2400. The examiner's record spans 3 art units within this technology center. The allowance rate ranges from 89% to 99% across these art units, reflecting variation in the composition and outcomes of applications examined across different subject areas within the technology center.

How to read these numbers.

This pooled record aggregates applications decided across multiple art units. The overall allowance rate describes the examiner's past record in aggregate and is not a prediction of any specific application's outcome. Pooled figures mask variation among individual art units; applicants reviewing this examiner's profile may also examine per-art-unit records to understand performance in their specific subject area.

These are aggregate statistics from this examiner's past public record — not predictions about any specific application. The per-art-unit figures below show how the record varies across art units. Our approach to patent prosecution →

The record, art unit by art unit.3 art units

Each section benchmarks this examiner against that art unit's average. Figures are this examiner's own public record within the art unit; the overall rate above pools them.

◈ PRIMARY · ART UNIT 2472
1,122 APPS · 91% ALLOWANCE

Allowance ratewhere this examiner sits among peers

91%
higher than about 60% of the 45 examiners with published rates in art unit 2472
AU avg 83%
0%
100%
Each short mark is one of the 45 examiners with published rates in art unit 2472; the dot is this examiner. The tick is the art-unit average, computed across all 47 examiners in the unit — a broader group than the 45 published marks, so it can sit apart from them.

Disposition1,122 decided applications

1,023 allowed
No applications pending.

Pendencymonths from filing

filed
first action 16.7mo
disposed 26.9mo
0
36mo
Art-unit average: first action 23.3 mo, disposed 35.1 mo.

Rejection groundsexaminer ● vs art-unit average ○

REJECTION RATE = SHARE OF THIS EXAMINER'S APPLICATIONS THAT DREW ≥1 OFFICE-ACTION REJECTION IN WHICH THE GROUND APPEARS

Grounds can co-occur, so the four don't sum to 100%. The art-unit figure is the unweighted mean across examiners in the art unit; §102 and §112 carry no art-unit benchmark.

§101 — Subject-matter eligibility
AU 22
9%
§102 — Anticipation (novelty)
no AU benchmark
39%
§103 — Obviousness
AU 82
63%
§112 — Written description & definiteness
no AU benchmark
25%

Interview benefit

Allowance rate for applications with an examiner interview versus without one.

without
91%
+4 pts
with
95%

A correlation, not proof that interviews cause allowances. Based on 125 decided applications with an interview and 997 without.

ART UNIT 2475
409 APPS · 99% ALLOWANCE

Allowance ratewhere this examiner sits among peers

99%
higher than about 88% of the 40 examiners with published rates in art unit 2475
AU avg 74%
0%
100%
Each short mark is one of the 40 examiners with published rates in art unit 2475; the dot is this examiner. The tick is the art-unit average.

Disposition354 decided applications

350 allowed
Plus 55 applications still pending — not yet decided, so excluded from the rate.

Pendencymonths from filing

filed
first action 22.6mo
disposed 33mo
0
36mo
Art-unit average: first action 24.6 mo, disposed 38.1 mo.

Rejection groundsexaminer ● vs art-unit average ○

REJECTION RATE = SHARE OF THIS EXAMINER'S APPLICATIONS THAT DREW ≥1 OFFICE-ACTION REJECTION IN WHICH THE GROUND APPEARS

Grounds can co-occur, so the four don't sum to 100%. The art-unit figure is the unweighted mean across examiners in the art unit; §102 and §112 carry no art-unit benchmark.

§101 — Subject-matter eligibility
AU 22
9%
§102 — Anticipation (novelty)
no AU benchmark
49%
§103 — Obviousness
AU 88
66%
§112 — Written description & definiteness
no AU benchmark
36%

Interview benefit

Allowance rate for applications with an examiner interview versus without one.

without
99%
+1 pt
with
100%

A correlation, not proof that interviews cause allowances. Based on 22 decided applications with an interview and 332 without.

ART UNIT 2416
90 APPS · 89% ALLOWANCE

Allowance ratewhere this examiner sits among peers

89%
higher than about 92% of the 144 examiners with published rates in art unit 2416
AU avg 58%
0%
100%
Each short mark is one of the 144 examiners with published rates in art unit 2416; the dot is this examiner. The tick is the art-unit average, computed across all 146 examiners in the unit — a broader group than the 144 published marks, so it can sit apart from them.

Disposition90 decided applications

80 allowed
No applications pending.

Pendencymonths from filing

filed
first action 35.7mo
disposed 50.7mo
0
60mo
Art-unit average: first action 33.2 mo, disposed 47.8 mo.
// FAQ

Questions about Examiner Chi Ho A Lee

  • What is Chi Ho A Lee's overall allowance rate?
    The examiner's allowance rate is 93%, measured across more than a thousand decided applications (allowed and abandoned applications combined). This figure aggregates all art units in the examiner's record.
  • How many art units does this examiner cover?
    Examiner Lee's record spans 3 art units within Technology Center 2400.
  • Does the allowance rate vary by art unit?
    Yes. The allowance rate ranges from 89% to 99% across the examiner's art units. These figures reflect variation in application outcomes across different subject areas but are not predictions for any individual application.
◈ HOW LYNCH LLP CAN HELP

Where to go next.

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How the firm prosecutes patentsApplication drafting, office-action responses, and prosecution strategy before the USPTO.Work before the Patent Trial and Appeal BoardAppeals, inter partes review, and patent-owner defense before the PTAB.Planning a patent portfolio over timeHow a patent portfolio is sequenced and built over a multi-year horizon.The firm's consultation optionsFree and paid consultation options across the firm's attorneys.
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METHODOLOGY & DISCLOSURES

Methodology. This page pools every art unit in which Examiner Chi Ho A Lee has a public record within Technology Center 2400. Statistics are computed from publicly available USPTO records, refreshed on a recurring schedule. This page's data was last updated July 22, 2026. The overall allowance rate is total allowed divided by total decided applications (allowed plus abandoned) across all art units — not an average of the per-art-unit rates; pending applications are excluded. Figures are rounded for display. Pooled sample: 1,621 applications.

Rejection rates. Each §-rate is the share of this examiner's applications that drew at least one office-action rejection in which that statutory ground appears; applications with no rejection on record are excluded, and because grounds can co-occur the four do not sum to 100%. The art-unit figure beside each is the unweighted mean of the per-examiner rates across the art unit, published for §101 and §103 only. Beside the overall allowance rate we show a benchmark: for a single-art-unit examiner it is exactly that art unit's average, labeled “art-unit average”; for an examiner spanning several art units it is the “weighted peer average” — the per-art-unit averages, weighted by this examiner's application count in each — labeled distinctly because it is a blended figure, not any single art unit's average. Both are built from the same per-art-unit averages the panels show.

Lynch LLP is not affiliated with, endorsed by, or sponsored by the United States Patent and Trademark Office. Examiner statistics are derived from publicly available USPTO data.

These statistics describe past examiner behavior and do not predict the outcome of any particular application. Past results do not guarantee future outcomes. Where this page compares an examiner's allowance rate to an art-unit average, that comparison is a factual description of the public record, not a characterization of any individual examiner's conduct or competence.

This page is for general informational purposes and is not legal advice. No attorney-client relationship is formed by viewing it. Full disclaimers →

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