Examiner Han Yang
Grant ratio: 78.2% (78th percentile in Art Unit 2493 among examiners with at least 20 applications). Average office actions per grant: 1.74. Most common rejection type: §103.
Recently active
Last office action in data: July 2026
Examiner record
- Examiner ID
- 93835
- Primary art unit
- 2493
- Work group
- 2490
- Technology center
- 2400
- Applications
- 238
- Granted applications
- 186
- Examiner phone
- (408) 918-7638
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 28 | 62.5% | 1.93 |
| Group | 198 | 61.4% | 2.06 |
| 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 | 1 | 0.4% |
| 1 OA | 136 | 57.1% |
| 2 OAs | 69 | 29.0% |
| 3 OAs | 15 | 6.3% |
| 4 OAs | 11 | 4.6% |
| 5+ OAs | 6 | 2.5% |
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 | 9 | 3 | 33.3% |
| 2019 | 24 | 19 | 79.2% |
| 2020 | 23 | 21 | 91.3% |
| 2021 | 32 | 27 | 84.4% |
| 2022 | 41 | 38 | 92.7% |
| 2023 | 34 | 31 | 91.2% |
| 2024 | 36 | 36 | 100.0% |
| 2025 | 21 | 11 | 52.4% |
| 2026 | 18 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 237 | 4.2% | 4.2% | 74.7% | 8.4% |
| Action 2 | 101 | 1.0% | 1.0% | 87.1% | 4.0% |
| Action 3 | 32 | 3.1% | 0.0% | 90.6% | 0.0% |
| Action 4 | 17 | 0.0% | 0.0% | 94.1% | 0.0% |
| Action 5 | 6 | 0.0% | 0.0% | 100.0% | 0.0% |
| 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%
2019: PEG
0.0%
1.8%
3.6%
0.0%
6.5%
2024: AI examples
7.3%
2025: August memo
7.7%
5.6%
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.