Examiner Haeshil J Choi
Grant ratio: 11.1% (12th percentile in Art Unit 2479 among examiners with at least 20 applications). Average office actions per grant: 1.67. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 99700
- Primary art unit
- 2479
- Work group
- 2470
- Technology center
- 2400
- Applications
- 54
- Granted applications
- 6
- Examiner phone
- (703) 756-5409
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 19 | 46.8% | 1.93 |
| Group | 202 | 63.7% | 1.93 |
| 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 | 33.3% |
| 2 OAs | 19 | 35.2% |
| 3 OAs | 11 | 20.4% |
| 4 OAs | 5 | 9.3% |
| 5+ OAs | 1 | 1.9% |
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 |
|---|---|---|---|
| 2024 | 1 | 0 | 0.0% |
| 2025 | 16 | 6 | 37.5% |
| 2026 | 37 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 54 | 0.0% | 14.8% | 85.2% | 0.0% |
| Action 2 | 36 | 0.0% | 8.3% | 88.9% | 0.0% |
| Action 3 | 17 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 4 | 6 | 0.0% | 0.0% | 83.3% | 0.0% |
| Action 5 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 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
2024: AI examples
0.0%
2025: August memo
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.