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◈ USPTO PATENT EXAMINER STATISTICS

Examiner Stefan Stoynov

TECH CENTER 2100 · 3 ART UNITS · 1,332 DECIDED APPLICATIONS · LAST ACTION JUN 2026
ALLOWANCE RATE = SHARE OF DECIDED APPLICATIONS (ALLOWED + ABANDONED); PENDING EXCLUDED
OVERALL ALLOWANCE RATE · POOLED ACROSS 3 ART UNITS
91%vs 74% weighted peer average+17 pts

Examiner Stefan Stoynov has allowed 1,214 of 1,332 decided applications in Computer Architecture, Software, and Information Security.

allowed1,214abandoned118pending16· pending excluded from the rate
The weighted peer average (74%) is each art unit's average below, weighted by this examiner's applications in it (3 art units).
DATA UPDATED JULY 14, 2026
AU 2116 · 88%AU 2186 · 94%AU 2175 · 98%
// READING THIS EXAMINER

What the data says.

Stefan Stoynov maintains a pooled allowance rate of 91% across more than a thousand decided applications in Technology Center 2100 (Computer Architecture, Software, and Information Security). His record spans three art units. The allowance rate—calculated as a percentage of decided applications (allowed and abandoned)—ranges from 88% to 98% across these art units, reflecting variation in the examiner's record within the technology center. This pooled figure describes his historical record and does not predict outcomes on any specific application.

// HOW TO READ THESE NUMBERS

How to read these numbers.

This profile aggregates Stefan Stoynov's record across three art units within TC 2100. Pooled statistics combine different art units into a single aggregate figure. The allowance rate of 91% describes the examiner's past decisions on decided applications and is not a forecast of the outcome of any individual application. Variation across art units (88% to 98%) is normal and reflects differences in application volume and subject matter within the technology center.

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 2116
748 APPS · 88% ALLOWANCE

Primarily examines control or regulating systems.

88% allowance (of decided)▏ art-unit average 78%
DISPOSITION656 / 92 / 0allowed / abandoned / pending
FIRST ACTION23.8 moart unit avg 24.1 mo
TOTAL PENDENCY33.3 moart unit avg 37.7 mo
// REJECTION PROFILE
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 eligibility27%art unit 32%5 pts
§102 — Anticipation (novelty)63%no art-unit benchmark
§103 — Obviousness53%art unit 83%30 pts
§112 — Written description & definiteness58%no art-unit benchmark
// INTERVIEW SPLIT

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

WITH INTERVIEW97%allowance share
WITHOUT INTERVIEW83%+14 pt difference

A correlation, not proof that interviews cause allowances. Based on 236 decided applications with an interview and 512 without.

ART UNIT 2186
374 APPS · 94% ALLOWANCE

Primarily examines computer-aided design (CAD).

94% allowance (of decided)▏ art-unit average 72%
DISPOSITION352 / 22 / 0allowed / abandoned / pending
FIRST ACTION16.8 moart unit avg 22.9 mo
TOTAL PENDENCY23.6 moart unit avg 35 mo
// REJECTION PROFILE
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 eligibility20%art unit 32%12 pts
§102 — Anticipation (novelty)53%no art-unit benchmark
§103 — Obviousness58%art unit 83%25 pts
§112 — Written description & definiteness62%no art-unit benchmark
// INTERVIEW SPLIT

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

WITH INTERVIEW97%allowance share
WITHOUT INTERVIEW92%+5 pt difference

A correlation, not proof that interviews cause allowances. Based on 142 decided applications with an interview and 232 without.

ART UNIT 2175
226 APPS · 98% ALLOWANCE

Primarily examines general computer details, and program control and execution.

98% allowance (of decided)▏ art-unit average 66%
DISPOSITION206 / 4 / 16allowed / abandoned / pending
FIRST ACTION23 moart unit avg 22.8 mo
TOTAL PENDENCY25.8 moart unit avg 37.8 mo
// REJECTION PROFILE
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 eligibility19%art unit 29%10 pts
§102 — Anticipation (novelty)53%no art-unit benchmark
§103 — Obviousness64%art unit 87%23 pts
§112 — Written description & definiteness64%no art-unit benchmark
// INTERVIEW SPLIT

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

WITH INTERVIEW100%allowance share
WITHOUT INTERVIEW97%+3 pt difference

A correlation, not proof that interviews cause allowances. Based on 85 decided applications with an interview and 125 without.

// FAQ

Questions about Examiner Stefan Stoynov

  • What is Stefan Stoynov's overall allowance rate?
    The overall allowance rate is 91%, calculated across more than a thousand decided applications pooled from all art units.
  • How many art units does this examiner work in?
    Stefan Stoynov has a record spanning three art units within Technology Center 2100 (Computer Architecture, Software, and Information Security).
  • Does the allowance rate vary across art units?
    Yes. The allowance rate ranges from 88% to 98% across the examiner's art units. This range reflects variation in the examiner's record within the technology center.
  • Is the 91% allowance rate a prediction for my application?
    No. The 91% figure describes the examiner's historical record on decided applications and is not a prediction of the outcome of any specific application.
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METHODOLOGY & DISCLOSURES

Methodology. This page pools every art unit in which Examiner Stefan Stoynov 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 July 14, 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: 1,348 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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