Examiner Don Chiang
Grant ratio: 57.1% (16th percentile in Art Unit 2461 among examiners with at least 20 applications). Average office actions per grant: 1.79. Most common rejection type: §103.
Appears inactive
Last office action in data: February 2014
Examiner record
Save this analysis
Download this examiner report.
Log in / Sign Up to exportPeer comparisons
| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 24 | 61.7% | 2.26 |
| Group | 225 | 60.1% | 2.07 |
| Tech Center | 1,754 | 58.4% | 2.14 |
| 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 | 18 | 42.9% |
| 2 OAs | 16 | 38.1% |
| 3 OAs | 5 | 11.9% |
| 4 OAs | 2 | 4.8% |
| 5+ OAs | 1 | 2.4% |
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 |
|---|---|---|---|
| 2012 | 6 | 1 | 16.7% |
| 2013 | 34 | 22 | 64.7% |
| 2014 | 2 | 1 | 50.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 42 | 0.0% | 0.0% | 97.6% | 2.4% |
| Action 2 | 24 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 3 | 8 | 0.0% | 0.0% | 87.5% | 12.5% |
| Action 4 | 3 | 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: 2023-08-28–2026-08-28. All years includes every dated office action in the data.
By year
0.0%
0.0%
2014: Alice
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 Aug. 27, 2026.