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◈ USPTO PATENT EXAMINER STATISTICS

Examiner Ann J Lo

TECH CENTER 2100 · 5 ART UNITS · 257 DECIDED APPLICATIONS · LAST ACTION JUN 2026
ALLOWANCE RATE = SHARE OF DECIDED APPLICATIONS (ALLOWED + ABANDONED); PENDING EXCLUDED
OVERALL ALLOWANCE RATE · POOLED ACROSS 5 ART UNITS

Examiner Ann J Lo has allowed 116 of 257 decided applications (45%) in Computer Architecture, Software, and Information Security.

45% pooled allowance · benchmarked per art unit below
DATA UPDATED JUNE 25, 2026
AU 2166 · 37%AU 2159 · 100%AU 2126 · 33%AU 2131 · 54%AU 2169 · 67%
// READING THIS EXAMINER

What the data says.

Ann J Lo has a pooled allowance rate of 45% across 257 disposed applications in Technology Center 2100 (Computer Architecture, Software, and Information Security). Her public record spans five art units: 2126, 2131, 2159, 2166, and 2169. Of the 276 total applications in her record, 116 were allowed and 141 were abandoned. The allowance rate across these art units ranges from 33% to 100%, reflecting variation in outcomes by individual art unit. This pooled figure represents the aggregate record and does not describe the outcome of any single application.

// HOW TO READ THESE NUMBERS

How to read these numbers.

A pooled, cross-art-unit record aggregates data from multiple art units into a single overall allowance rate. This aggregate reflects the examiner's past decisions across all units combined and describes historical outcomes, not predictions about future applications. Individual art units within the examiner's record may have different allowance rates. Pooled figures are useful for understanding an examiner's broad historical record but do not forecast the result in any particular case.

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 →

// BY ART UNIT

The record, art unit by art unit.

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 2166
175 APPS · 37% ALLOWANCE

Primarily examines information retrieval and database structures.

37% allowance (of decided)▏ art-unit average 63%
DISPOSITION65 / 110 / 0allowed / abandoned / pending
FIRST ACTION22.6 moart unit avg 23.8 mo
TOTAL PENDENCY56.7 moart unit avg 45 mo
// REJECTION PROFILE
§101 — Subject-matter eligibility58% · art unit 44%
§102 — Anticipation (novelty)86%
§103 — Obviousness69% · art unit 81%
§112 — Written description & definiteness74%
// INTERVIEW SPLIT

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

WITH INTERVIEW51%allowance share
WITHOUT INTERVIEW25%+26 pt difference

A correlation, not proof that interviews cause allowances. Based on 80 decided applications with an interview and 95 without.

ART UNIT 2159
49 APPS · 100% ALLOWANCE · LIMITED DATA

Primarily examines information retrieval and database structures.

100% allowance (of decided)▏ art-unit average 63%
DISPOSITION30 / 0 / 19allowed / abandoned / pending
FIRST ACTION28.7 moart unit avg 22.9 mo
TOTAL PENDENCY44.6 moart unit avg 45.1 mo
// REJECTION PROFILE
§101 — Subject-matter eligibility81% · art unit 55%
§102 — Anticipation (novelty)60%
§103 — Obviousness91% · art unit 82%
§112 — Written description & definiteness53%

Based on 49 applications — too small a sample to characterize the rejection mix reliably; shown for completeness.

ART UNIT 2126
36 APPS · 33% ALLOWANCE · LIMITED DATA

Primarily examines neural-network / biological-model computing, and machine learning.

33% allowance (of decided)▏ art-unit average 63%
DISPOSITION12 / 24 / 0allowed / abandoned / pending
FIRST ACTION32.1 moart unit avg 29.4 mo
TOTAL PENDENCY47.4 moart unit avg 44.4 mo
// REJECTION PROFILE
§101 — Subject-matter eligibility58% · art unit 53%
§102 — Anticipation (novelty)73%
§103 — Obviousness85% · art unit 88%
§112 — Written description & definiteness64%

Based on 36 applications — too small a sample to characterize the rejection mix reliably; shown for completeness.

ART UNIT 2131
13 APPS · 54% ALLOWANCE · LIMITED DATA

Primarily examines input/output (I/O) data transfer, and memory access and allocation.

54% allowance (of decided)▏ art-unit average 56%
DISPOSITION7 / 6 / 0allowed / abandoned / pending
FIRST ACTION15.6 moart unit avg 26.1 mo
TOTAL PENDENCY48.3 moart unit avg 41.7 mo
// REJECTION PROFILE
§101 — Subject-matter eligibility30% · art unit 29%
§102 — Anticipation (novelty)60%
§103 — Obviousness90% · art unit 79%
§112 — Written description & definiteness90%

Based on 13 applications — too small a sample to characterize the rejection mix reliably; shown for completeness.

ART UNIT 2169
3 APPS · 67% ALLOWANCE · LIMITED DATA

Primarily examines information retrieval and database structures.

67% allowance (of decided)▏ art-unit average 47%
DISPOSITION2 / 1 / 0allowed / abandoned / pending
FIRST ACTION12.7 moart unit avg 24.8 mo
TOTAL PENDENCY37.9 moart unit avg 40 mo
// FAQ

Questions about Examiner Ann J Lo

  • What is Ann J Lo's overall allowance rate?
    45% across 257 disposed applications (allowed and abandoned). This is the pooled rate across all of her art units combined.
  • How many art units does Ann J Lo cover?
    Five art units in TC 2100: 2126, 2131, 2159, 2166, and 2169.
  • What is the range of allowance rates across her art units?
    Allowance rates range from 33% to 100% across her art units. This range reflects variation in outcomes by individual unit.
  • What does the pooled allowance rate tell me about my application?
    The pooled rate describes the examiner's aggregate historical record and is not a prediction for any specific application. Individual art unit rates may differ from the pooled figure.
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METHODOLOGY & DISCLOSURES

Methodology. This page pools every art unit in which Examiner Ann J Lo has a public record within Technology Center 2100. Statistics are computed from publicly available USPTO records, refreshed on a recurring schedule. This page's data was last updated June 25, 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: 276 applications.

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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