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◈ USPTO PATENT EXAMINER STATISTICS

Examiner Hua Fan

TECH CENTER 2400 · 4 ART UNITS · 815 DECIDED APPLICATIONS · LAST ACTION JUL 2026
ALLOWANCE RATE = SHARE OF DECIDED APPLICATIONS (ALLOWED + ABANDONED); PENDING EXCLUDED
OVERALL ALLOWANCE RATE · POOLED ACROSS 4 ART UNITS
71%vs 57% weighted peer average+14 pts

Examiner Hua Fan has allowed 576 of 815 decided applications.

576 allowed
239 abandoned
Plus 30 applications still pending — not yet decided, so excluded from the rate.
The weighted peer average (57%) is each art unit's average below, weighted by this examiner's applications in it (4 art units).
DATA UPDATED JULY 22, 2026
AU 2449 · 72%AU 2456 · 67%AU 2458 · 70%AU 2426 · 100%

What the data says.reading this examiner

Examiner Hua Fan has a pooled allowance rate of 71% across hundreds of decided applications in Technology Center 2400. The examiner's record spans four art units: 2426, 2449, 2456, and 2458. The allowance rate ranges from 67% to 100% across these art units, reflecting variation in outcomes within the examiner's portfolio. This pooled figure represents the share of allowed applications among all decided (allowed and abandoned) applications across the examiner's art-unit assignments.

How to read these numbers.

A pooled record aggregates an examiner's allowance rates across multiple art units into a single figure. This aggregate describes historical outcomes and is a statistical summary only—not a prediction about any specific application. Allowance rates vary by art unit and by application. The pooled rate and the range across art units together illustrate the breadth of the examiner's assignment; individual art-unit records provide more targeted detail.

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.4 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 2449
338 APPS · 72% ALLOWANCE

Allowance ratewhere this examiner sits among peers

72%
higher than about 65% of the 37 examiners with published rates in art unit 2449
AU avg 55%
0%
100%
Each short mark is one of the 37 examiners with published rates in art unit 2449; the dot is this examiner. The tick is the art-unit average.

Disposition338 decided applications

245 allowed
93 abandoned
No applications pending.

Pendencymonths from filing

filed
first action 21.1mo
disposed 50.2mo
0
60mo
Art-unit average: first action 23.9 mo, disposed 40.3 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 40
48%
§102 — Anticipation (novelty)
no AU benchmark
76%
§103 — Obviousness
AU 87
90%
§112 — Written description & definiteness
no AU benchmark
73%

Interview benefit

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

without
72%
+1 pt
with
73%

A correlation, not proof that interviews cause allowances. Based on 238 decided applications with an interview and 100 without.

ART UNIT 2456
295 APPS · 67% ALLOWANCE

Allowance ratewhere this examiner sits among peers

67%
higher than about 52% of the 42 examiners with published rates in art unit 2456
AU avg 58%
0%
100%
Each short mark is one of the 42 examiners with published rates in art unit 2456; the dot is this examiner. The tick is the art-unit average.

Disposition295 decided applications

199 allowed
96 abandoned
No applications pending.

Pendencymonths from filing

filed
first action 28.4mo
disposed 51mo
0
60mo
Art-unit average: first action 24.3 mo, disposed 42.4 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 42
59%
§102 — Anticipation (novelty)
no AU benchmark
66%
§103 — Obviousness
AU 84
85%
§112 — Written description & definiteness
no AU benchmark
80%

Interview benefit

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

without
52%
+31 pts
with
83%

A correlation, not proof that interviews cause allowances. Based on 147 decided applications with an interview and 148 without.

ART UNIT 2458
164 APPS · 70% ALLOWANCE

Allowance ratewhere this examiner sits among peers

70%
higher than about 57% of the 44 examiners with published rates in art unit 2458
AU avg 59%
0%
100%
Each short mark is one of the 44 examiners with published rates in art unit 2458; the dot is this examiner. The tick is the art-unit average, computed across all 45 examiners in the unit — a broader group than the 44 published marks, so it can sit apart from them.

Disposition164 decided applications

114 allowed
50 abandoned
No applications pending.

Pendencymonths from filing

filed
first action 13.7mo
disposed 34.1mo
0
36mo
Art-unit average: first action 24.9 mo, disposed 39.5 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 38
36%
§102 — Anticipation (novelty)
no AU benchmark
85%
§103 — Obviousness
AU 86
86%
§112 — Written description & definiteness
no AU benchmark
61%

Interview benefit

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

without
57%
+22 pts
with
79%

A correlation, not proof that interviews cause allowances. Based on 95 decided applications with an interview and 69 without.

ART UNIT 2426
48 APPS · 100% ALLOWANCE · LIMITED DATA

Allowance ratewhere this examiner sits among peers

100%
higher than about 93% of the 27 examiners with published rates in art unit 2426
AU avg 62%
0%
100%
Each short mark is one of the 27 examiners with published rates in art unit 2426; the dot is this examiner. The tick is the art-unit average.

Disposition18 decided applications

18 allowed
Plus 30 applications still pending — not yet decided, so excluded from the rate.

Pendencymonths from filing

filed
first action 21.5mo
disposed 23.6mo
0
24mo
Art-unit average: first action 20.8 mo, disposed 39 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 29
32%
§102 — Anticipation (novelty)
no AU benchmark
89%
§103 — Obviousness
AU 87
89%
§112 — Written description & definiteness
no AU benchmark
84%

Based on 48 applications — too small a sample to characterize the rejection mix reliably; shown for completeness.

// FAQ

Questions about Examiner Hua Fan

  • What is Examiner Hua Fan's overall allowance rate?
    The pooled allowance rate is 71%, calculated across hundreds of decided applications in Technology Center 2400.
  • How many art units does this examiner cover?
    Examiner Hua Fan's record spans four art units: 2426, 2449, 2456, and 2458.
  • What is the range of allowance rates across the examiner's art units?
    The allowance rate ranges from 67% to 100% across these art units, reflecting variation in outcomes by art-unit assignment.
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METHODOLOGY & DISCLOSURES

Methodology. This page pools every art unit in which Examiner Hua Fan 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: 845 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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