What is Examiner Doon Y Chow's overall allowance rate?

The examiner's allowance rate is 2 percent, based on 54 disposed applications (1 allowed, 53 abandoned). This figure aggregates all art units and describes the historical record only.

How many art units does this examiner work in?

The examiner's public record spans 3 art units within TC 2100: art units 2173, 2174, and 2194. The pooled figures shown here aggregate across all three.

Does the pooled allowance rate apply to my application?

No. The pooled rate is a historical aggregate and is not a prediction of any specific application's outcome. Individual art units maintain separate records and may differ from the pooled figure.

What does the 2 percent allowance rate mean?

Of the 54 applications the examiner has decided (allowed or abandoned), 1 was allowed and 53 were abandoned. The allowance rate is the percentage of those decided applications that were allowed.

What is Examiner Doon Y Chow's overall allowance rate?

The examiner's allowance rate is 2 percent, based on 54 disposed applications (1 allowed, 53 abandoned). This figure aggregates all art units and describes the historical record only.

How many art units does this examiner work in?

The examiner's public record spans 3 art units within TC 2100: art units 2173, 2174, and 2194. The pooled figures shown here aggregate across all three.

Does the pooled allowance rate apply to my application?

No. The pooled rate is a historical aggregate and is not a prediction of any specific application's outcome. Individual art units maintain separate records and may differ from the pooled figure.

What does the 2 percent allowance rate mean?

Of the 54 applications the examiner has decided (allowed or abandoned), 1 was allowed and 53 were abandoned. The allowance rate is the percentage of those decided applications that were allowed.

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◈ FIND AN EXAMINER OR ART UNIT

◈ USPTO PATENT EXAMINER STATISTICS

Examiner Doon Y Chow

TECH CENTER 2100 · 3 ART UNITS · 54 DECIDED APPLICATIONS · LAST ACTION OCT 2020

ALLOWANCE RATE = SHARE OF DECIDED APPLICATIONS (ALLOWED + ABANDONED); PENDING EXCLUDED

OVERALL ALLOWANCE RATE · POOLED ACROSS 3 ART UNITS

Examiner Doon Y Chow has allowed 1 of 54 decided applications (2%) in Computer Architecture, Software, and Information Security.

2% pooled allowance · benchmarked per art unit below

DATA UPDATED JUNE 25, 2026

AU 2174 · 2%AU 2173 · 0%AU 2194 · 0%

// READING THIS EXAMINER

What the data says.

Examiner Doon Y Chow maintains a public record spanning 3 art units within Technology Center 2100 (Computer Architecture, Software, and Information Security). Across 54 disposed applications, the examiner allowed 1 application and abandoned 53, yielding an allowance rate of 2 percent. This rate is calculated as the percentage of decided cases—allowed plus abandoned—and excludes any pending applications. The pooled figure aggregates the examiner's activity across all assigned art units.

// HOW TO READ THESE NUMBERS

How to read these numbers.

This pooled record aggregates data across multiple art units and represents the examiner's historical record only. The overall allowance rate describes past dispositions and is not a prediction of any specific application's outcome. Pooled figures mask variation among individual art units; each art unit maintains its own separate record. When reviewing an examiner's profile, distinguish between aggregate statistics and per-unit performance to understand the full picture.

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 2174

45 APPS · 2% ALLOWANCE · LIMITED DATA

2% allowance (of decided)▏ art-unit average 53%

DISPOSITION1 / 44 / 0allowed / abandoned / pending

FIRST ACTION29.7 moart unit avg 26.3 mo

TOTAL PENDENCY60.3 moart unit avg 42.9 mo

// REJECTION PROFILE

§101 — Subject-matter eligibility36% · art unit 33%

§102 — Anticipation (novelty)64%

§103 — Obviousness96% · art unit 89%

§112 — Written description & definiteness64%

Based on 45 applications — too small a sample to characterize the rejection mix reliably; shown for completeness.

◈ ART UNIT 2173

5 APPS · 0% ALLOWANCE · LIMITED DATA

0% allowance (of decided)▏ art-unit average 49%

DISPOSITION0 / 5 / 0allowed / abandoned / pending

FIRST ACTION—art unit avg 25.2 mo

TOTAL PENDENCY18 moart unit avg 40.1 mo

◈ ART UNIT 2194

4 APPS · 0% ALLOWANCE · LIMITED DATA

Primarily examines program control and execution.

0% allowance (of decided)▏ art-unit average 69%

DISPOSITION0 / 4 / 0allowed / abandoned / pending

FIRST ACTION14.7 moart unit avg 28 mo

TOTAL PENDENCY34.6 moart unit avg 43.9 mo

// REJECTION PROFILE

§101 — Subject-matter eligibility67% · art unit 52%

§102 — Anticipation (novelty)100%

§103 — Obviousness100% · art unit 79%

§112 — Written description & definiteness67%

Based on 4 applications — too small a sample to characterize the rejection mix reliably; shown for completeness.

// FAQ

Questions about Examiner Doon Y Chow

What is Examiner Doon Y Chow's overall allowance rate?
The examiner's allowance rate is 2 percent, based on 54 disposed applications (1 allowed, 53 abandoned). This figure aggregates all art units and describes the historical record only.
How many art units does this examiner work in?
The examiner's public record spans 3 art units within TC 2100: art units 2173, 2174, and 2194. The pooled figures shown here aggregate across all three.
Does the pooled allowance rate apply to my application?
No. The pooled rate is a historical aggregate and is not a prediction of any specific application's outcome. Individual art units maintain separate records and may differ from the pooled figure.
What does the 2 percent allowance rate mean?
Of the 54 applications the examiner has decided (allowed or abandoned), 1 was allowed and 53 were abandoned. The allowance rate is the percentage of those decided applications that were allowed.

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METHODOLOGY & DISCLOSURES

Methodology. This page pools every art unit in which Examiner Doon Y Chow 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: 54 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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