Examiner Jean Chang
Grant ratio: 64.8% (25th percentile in Art Unit 2643 among examiners with at least 20 applications). Average office actions per grant: 2.09. Most common rejection type: §103.
Appears inactive
Last office action in data: January 2016
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 20 | 65.0% | 2.10 |
| Group | 226 | 57.7% | 2.06 |
| 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 | 93 | 42.5% |
| 2 OAs | 67 | 30.6% |
| 3 OAs | 24 | 11.0% |
| 4 OAs | 28 | 12.8% |
| 5+ OAs | 7 | 3.2% |
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 |
|---|---|---|---|
| 2009 | 14 | 2 | 14.3% |
| 2010 | 20 | 1 | 5.0% |
| 2011 | 31 | 20 | 64.5% |
| 2012 | 40 | 30 | 75.0% |
| 2013 | 47 | 37 | 78.7% |
| 2014 | 38 | 28 | 73.7% |
| 2015 | 28 | 23 | 82.1% |
| 2016 | 1 | 1 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 219 | 1.8% | 3.2% | 87.2% | 0.0% |
| Action 2 | 126 | 0.0% | 0.8% | 92.1% | 0.0% |
| Action 3 | 59 | 0.0% | 0.0% | 86.4% | 0.0% |
| Action 4 | 35 | 0.0% | 0.0% | 77.1% | 0.0% |
| Action 5 | 7 | 0.0% | 0.0% | 71.4% | 14.3% |
| Action 6 | 2 | 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%
0.0%
2.2%
0.0%
2014: Alice
3.0%
0.0%
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.