Examiner Elizabeth S Ko
Examiner Elizabeth S Ko appears to be about average relative to their peer examiners. Their lifetime grant ratio is 97.1%, they average 1.23 office actions per granted patent, and their rejection profile is dominated by §112 and elevated §112 usage.
Difficulty vs AU
Very Easy
Difficulty vs Group
About Average
Difficulty vs TC
About Average
Difficulty vs USPTO
Very Easy
Average OA / Grant
1.23
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Examiner Details
- Observed Examiner Years
- 7 years (2020-2026)
- Phone
- (571) 272-6108
- Predicted Supervisor
- Justin M Jonaitis
- Supervisor Phone
- (571) 270-5150
- Tech Center
- 2900 - Designs
- Group
- 2900-WG - 2900-WG
Metrics
- Applications Evaluated
- 206
- Granted Applications
- 200
- Non-Granted Applications
- 6
- Avg OA / Grant
- 1.23
- Last OA Observed
- February 2026 (1 months ago)
- Work Groups Seen
Context Comparison
| Scope | Examiners | Lifetime Grant Ratio | Avg OA / Grant |
|---|---|---|---|
| This Examiner | 1 | 97.1% | 1.23 |
| Art Unit | 23 | 96.0% | 1.24 |
| Group | 461 | 95.1% | 1.19 |
| Tech Center | 486 | 94.9% | 1.20 |
| 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 2020; examiner may not yet have been active in the available dataset. | |||
| 2020 | 5 | 5 | 100.0% |
| 2021 | 65 | 64 | 98.5% |
| 2022 | 51 | 51 | 100.0% |
| 2023 | 46 | 45 | 97.8% |
| 2024 | 35 | 33 | 94.3% |
| 2025 | 3 | 2 | 66.7% |
| 2026 | 1 | 0 | 0.0% |
200 family-cache-validated grants; 0 OA-only grant signals.
Rejection Timeline
| OA # | Office Actions | § 101 Percentage | § 102 Percentage | § 103 Percentage | § 112 Percentage |
|---|---|---|---|---|---|
| 1 | 206 | 0.0% | 12.1% | 2.4% | 80.1% |
| 2 | 47 | 0.0% | 12.8% | 4.3% | 83.0% |