Examiner Nathan Tengbumroong
Grant ratio: 5.6% (8th percentile in Art Unit 2654 among examiners with at least 20 applications). Average office actions per grant: 2.33. Most common rejection type: §103.
Recently active
Last office action in data: September 2026
Examiner record
- Examiner ID
- 99230
- Primary art unit
- 2654
- Work group
- 2650
- Technology center
- 2600
- Applications
- 54
- Granted applications
- 3
- Examiner phone
- (703) 756-1725
- Supervisor
- Hai Phan
- Supervisor phone
- (571) 272-6338
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 22 | 49.3% | 1.87 |
| Group | 210 | 59.0% | 1.87 |
| Tech Center | 1,759 | 56.9% | 1.88 |
| USPTO | 16,572 | 52.1% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 1 | 1.9% |
| 1 OA | 12 | 22.2% |
| 2 OAs | 16 | 29.6% |
| 3 OAs | 11 | 20.4% |
| 4 OAs | 9 | 16.7% |
| 5+ OAs | 5 | 9.3% |
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 | 5 | 0 | 0.0% |
| 2025 | 17 | 3 | 17.6% |
| 2026 | 32 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 53 | 0.0% | 3.8% | 96.2% | 0.0% |
| Action 2 | 41 | 0.0% | 0.0% | 92.7% | 0.0% |
| Action 3 | 25 | 0.0% | 0.0% | 96.0% | 0.0% |
| Action 4 | 14 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 5 | 5 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 2 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
Section 101 rejections
Last 3 years: 2023-10-02–2026-10-02. 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 Oct. 9, 2026.