Examiner Eric Chau
Grant ratio: 28.6% (20th percentile in Art Unit 3679 among examiners with at least 20 applications). Average office actions per grant: 2.14. Most common rejection type: §103.
Appears inactive
Last office action in data: May 2012
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 25 | 57.1% | 1.98 |
| Group | 240 | 57.7% | 1.84 |
| Tech Center | 2,394 | 45.5% | 2.12 |
| USPTO | 16,620 | 51.8% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 24 | 49.0% |
| 2 OAs | 16 | 32.7% |
| 3 OAs | 7 | 14.3% |
| 4 OAs | 1 | 2.0% |
| 5+ OAs | 1 | 2.0% |
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 |
|---|---|---|---|
| 2010 | 1 | 0 | 0.0% |
| 2011 | 34 | 9 | 26.5% |
| 2012 | 14 | 5 | 35.7% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 49 | 2.0% | 6.1% | 85.7% | 2.0% |
| Action 2 | 25 | 0.0% | 8.0% | 88.0% | 0.0% |
| Action 3 | 9 | 0.0% | 0.0% | 88.9% | 11.1% |
| Action 4 | 2 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 5 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
Section 101 rejections
Last 3 years: 2023-10-23–2026-10-23. All years includes every dated office action in the data.
By year
0.0%
1.4%
0.0%
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 Oct. 30, 2026.