Examiner Lei Zhang
Examiner Lei Zhang appears to be very difficult relative to their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 0.0% and their rejection profile is dominated by ยง103.
Difficulty vs AU
Very Hard
Difficulty vs Group
Very Hard
Difficulty vs TC
Very Hard
Difficulty vs USPTO
Very Hard
Average OA / Grant
N/A
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Examiner Details
- Observed Examiner Years
- 2 years (2025-2026)
- Phone
- (571) 272-7172
- Predicted Supervisor
- Pascal Bui-Pho
- Supervisor Phone
- (571) 272-2714
- Tech Center
- 3700 - Mechanical Engineering, Manufacturing and Products
- Group
- 3790 - Medical Instruments, Diagnostic Equipment, and Treatment Devices
Metrics
- Applications Evaluated
- 52
- Granted Applications
- 0
- Non-Granted Applications
- 52
- Avg OA / Grant
- N/A
- Last OA Observed
- March 2026 (2 months ago)
- Art Units Seen
- 3798
Context Comparison
| Scope | Examiners | Lifetime Grant Ratio | Avg OA / Grant |
|---|---|---|---|
| This Examiner | 1 | 0.0% | N/A |
| Art Unit | 13 | 35.1% | 2.68 |
| Group | 327 | 40.3% | 2.25 |
| Tech Center | 2,632 | 49.9% | 2.01 |
| USPTO | 16,116 | 54.8% | 1.98 |
Grant Timeline
Shaded region marks the last two observed years, where grant outcomes may lag due to recency.
| Year | Applications | Granted | Grant Rate |
|---|---|---|---|
| No observed data before 2025; examiner may not yet have been active in the available dataset. | |||
| 2025 | 33 | 0 | 0.0% |
| 2026 | 19 | 0 | 0.0% |
0 family-cache-validated grants; 0 OA-only grant signals.
Rejection Timeline
| OA # | Office Actions | § 101 Percentage | § 102 Percentage | § 103 Percentage | § 112 Percentage |
|---|---|---|---|---|---|
| 1 | 52 | 0.0% | 0.0% | 94.2% | 0.0% |
| 2 | 17 | 0.0% | 0.0% | 100.0% | 0.0% |
| 3 | 5 | 0.0% | 0.0% | 100.0% | 0.0% |
| 4 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |