Examiner Allen Chao
Grant ratio: 0.0% (6th percentile in Art Unit 1622 among examiners with at least 20 applications). Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 101471
- Primary art unit
- 1622
- Work group
- 1620
- Technology center
- 1600
- Applications
- 52
- Granted applications
- 0
- Examiner phone
- (571) 272-7001
- Supervisor
- James H Alstrum-Acevedo
- Supervisor phone
- (571) 272-5548
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 17 | 41.6% | 1.68 |
| Group | 252 | 46.0% | 1.76 |
| Tech Center | 1,373 | 38.0% | 2.02 |
| 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 | 41 | 78.8% |
| 2 OAs | 11 | 21.2% |
| 3 OAs | 0 | 0.0% |
| 4 OAs | 0 | 0.0% |
| 5+ OAs | 0 | 0.0% |
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 |
|---|---|---|---|
| 2025 | 3 | 0 | 0.0% |
| 2026 | 49 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 52 | 0.0% | 17.3% | 51.9% | 21.2% |
| Action 2 | 11 | 0.0% | 18.2% | 45.5% | 36.4% |
Section 101 rejections
Last 3 years: 2023-08-28–2026-08-28. All years includes every dated office action in the data.
By year
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.