Examiner Catherine Joh
Examiner Catherine Joh 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) 272-0410
- Predicted Supervisor
- David Posigian
- Supervisor Phone
- (313) 446-6546
- Tech Center
- 3700 - Mechanical Engineering, Manufacturing and Products
- Group
- 3720 - Manufacturing Devices and Processes, Machine Tools and Hand Tools
Metrics
- Applications Evaluated
- 10
- Granted Applications
- 0
- Non-Granted Applications
- 10
- Avg OA / Grant
- N/A
- Last OA Observed
- March 2026 (3 months ago)
- Art Units Seen
- 3723
Context Comparison
| Scope | Examiners | Lifetime Grant Ratio | Avg OA / Grant |
|---|---|---|---|
| This Examiner | 1 | 0.0% | N/A |
| Art Unit | 80 | 49.1% | 1.69 |
| Group | 306 | 53.9% | 1.76 |
| 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 | 3 | 0 | 0.0% |
| 2026 | 7 | 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 | 10 | 0.0% | 0.0% | 90.0% | 10.0% |