Examiner Eugene Zhao
Grant ratio: 76.1% (55th percentile in Art Unit 2653 among examiners with at least 20 applications). Average office actions per grant: 1.29. Most common rejection type: §103.
Appears inactive
Last office action in data: November 2017
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 21 | 56.9% | 1.70 |
| Group | 210 | 59.4% | 1.87 |
| Tech Center | 1,754 | 57.4% | 1.88 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 135 | 74.2% |
| 2 OAs | 38 | 20.9% |
| 3 OAs | 5 | 2.7% |
| 4 OAs | 1 | 0.5% |
| 5+ OAs | 3 | 1.6% |
Each application is counted once. “5+” includes all higher counts.
Grant history
Recent ratios may be lower while applications remain pending.
Yearly counts
| Year | Applications | Grants | Grant rate |
|---|---|---|---|
| 2011 | 19 | 10 | 52.6% |
| 2012 | 48 | 35 | 72.9% |
| 2013 | 33 | 28 | 84.8% |
| 2014 | 27 | 22 | 81.5% |
| 2015 | 29 | 23 | 79.3% |
| 2016 | 14 | 13 | 92.9% |
| 2017 | 10 | 6 | 60.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 182 | 1.6% | 23.1% | 73.1% | 0.0% |
| Action 2 | 47 | 0.0% | 23.4% | 76.6% | 0.0% |
| Action 3 | 9 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 4 | 4 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 5 | 3 | 0.0% | 33.3% | 66.7% | 0.0% |
| Action 6 | 2 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 1 | 0.0% | 0.0% | 0.0% | 100.0% |
Section 101 rejections
Last 3 years: 2023-08-28–2026-08-28. All years includes every dated office action in the data.
By year
0.0%
0.0%
0.0%
2014: Alice
0.0%
0.0%
0.0%
23.1%
Each bar is the percentage of office actions with a §101 rejection.
PTAB appeals
No PTAB decisions could be matched to this examiner.
Older and transferred applications may not have a reliable examiner match. Data through Aug. 27, 2026.