Examiner Dongxiu Zhang Spiering
Grant ratio: 1.9% (11th percentile in Art Unit 1616 among examiners with at least 20 applications). Average office actions per grant: 1.00. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 99953
- Primary art unit
- 1616
- Work group
- 1610
- Technology center
- 1600
- Applications
- 105
- Granted applications
- 2
- Examiner phone
- (703) 756-4796
- Supervisor
- Sue X. Liu
- Supervisor phone
- (571) 272-5539
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 28 | 28.5% | 2.46 |
| Group | 217 | 31.1% | 2.42 |
| 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 | 12 | 11.4% |
| 1 OA | 21 | 20.0% |
| 2 OAs | 35 | 33.3% |
| 3 OAs | 19 | 18.1% |
| 4 OAs | 7 | 6.7% |
| 5+ OAs | 11 | 10.5% |
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 |
|---|---|---|---|
| 2024 | 3 | 2 | 66.7% |
| 2025 | 21 | 0 | 0.0% |
| 2026 | 81 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 93 | 0.0% | 9.7% | 52.7% | 1.1% |
| Action 2 | 72 | 0.0% | 8.3% | 59.7% | 5.6% |
| Action 3 | 37 | 2.7% | 5.4% | 59.5% | 5.4% |
| Action 4 | 18 | 0.0% | 0.0% | 66.7% | 5.6% |
| Action 5 | 11 | 0.0% | 0.0% | 90.9% | 0.0% |
| Action 6 | 4 | 0.0% | 25.0% | 50.0% | 0.0% |
| Action 7 | 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%
1.0%
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.