Examiner Chang H Park
Grant ratio: 68.5% (73rd percentile in Art Unit 3763 among examiners with at least 20 applications). Average office actions per grant: 1.96. Most common rejection type: §103.
Appears inactive
Last office action in data: October 2022
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 101 | 52.9% | 2.10 |
| Group | 390 | 47.5% | 2.10 |
| Tech Center | 2,685 | 47.8% | 2.01 |
| 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 | 54 | 45.4% |
| 2 OAs | 43 | 36.1% |
| 3 OAs | 13 | 10.9% |
| 4 OAs | 5 | 4.2% |
| 5+ OAs | 4 | 3.4% |
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 |
|---|---|---|---|
| 2018 | 13 | 11 | 84.6% |
| 2019 | 33 | 26 | 78.8% |
| 2020 | 28 | 16 | 57.1% |
| 2021 | 25 | 16 | 64.0% |
| 2022 | 9 | 5 | 55.6% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 119 | 0.0% | 6.7% | 71.4% | 21.0% |
| Action 2 | 65 | 0.0% | 7.7% | 72.3% | 18.5% |
| Action 3 | 22 | 0.0% | 0.0% | 77.3% | 18.2% |
| Action 4 | 9 | 0.0% | 0.0% | 88.9% | 11.1% |
| Action 5 | 4 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 3 | 0.0% | 0.0% | 66.7% | 33.3% |
| Action 7 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 8 | 1 | 0.0% | 0.0% | 0.0% | 100.0% |
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%
2019: PEG
0.0%
0.0%
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 Oct. 30, 2026.