Examiner Hamza A. Darb
Examiner Hamza A. Darb appears to be about average relative to their peer examiners. Their lifetime grant ratio is 64.4%, they average 2.49 office actions per granted patent, and their rejection profile is dominated by ยง103.
Difficulty vs AU
About Average
Difficulty vs Group
About Average
Difficulty vs TC
About Average
Difficulty vs USPTO
About Average
Average OA / Grant
2.49
Export
Word
PDF
Create account to export.
Examiner Details
- Observed Examiner Years
- 16 years (2011-2026)
- Phone
- (571) 270-1202
- Predicted Supervisor
- Chelsea Stinson
- Supervisor Phone
- (571) 270-1744
- Tech Center
- 3700 - Mechanical Engineering, Manufacturing and Products
- Group
- 3780 - Body Treatment, Kinesitherapy, and Exercising
Metrics
- Applications Evaluated
- 592
- Granted Applications
- 381
- Non-Granted Applications
- 211
- Avg OA / Grant
- 2.49
- Last OA Observed
- March 2026 (2 months ago)
Context Comparison
| Scope | Examiners | Lifetime Grant Ratio | Avg OA / Grant |
|---|---|---|---|
| This Examiner | 1 | 64.4% | 2.49 |
| Art Unit | 78 | 47.5% | 1.98 |
| Group | 288 | 43.4% | 1.90 |
| 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 2011; examiner may not yet have been active in the available dataset. | |||
| 2011 | 1 | 1 | 100.0% |
| No observed data for 2012-2013. | |||
| 2014 | 21 | 14 | 66.7% |
| 2015 | 44 | 34 | 77.3% |
| 2016 | 50 | 37 | 74.0% |
| 2017 | 42 | 31 | 73.8% |
| 2018 | 52 | 40 | 76.9% |
| 2019 | 49 | 34 | 69.4% |
| 2020 | 52 | 48 | 92.3% |
| 2021 | 43 | 36 | 83.7% |
| 2022 | 41 | 35 | 85.4% |
| 2023 | 45 | 28 | 62.2% |
| 2024 | 49 | 33 | 67.3% |
| 2025 | 68 | 10 | 14.7% |
| 2026 | 35 | 0 | 0.0% |
381 family-cache-validated grants; 0 OA-only grant signals.
Rejection Timeline
| OA # | Office Actions | § 101 Percentage | § 102 Percentage | § 103 Percentage | § 112 Percentage |
|---|---|---|---|---|---|
| 1 | 574 | 0.0% | 10.3% | 83.8% | 3.8% |
| 2 | 400 | 0.0% | 8.5% | 85.3% | 4.3% |
| 3 | 224 | 0.0% | 4.5% | 87.9% | 5.8% |
| 4 | 133 | 0.0% | 6.0% | 91.0% | 2.3% |
| 5 | 77 | 0.0% | 1.3% | 94.8% | 3.9% |
| 6 | 52 | 0.0% | 1.9% | 94.2% | 1.9% |
| 7 | 25 | 0.0% | 0.0% | 92.0% | 4.0% |
| 8 | 10 | 0.0% | 0.0% | 100.0% | 0.0% |
| 9 | 8 | 0.0% | 0.0% | 100.0% | 0.0% |
| 10 | 4 | 0.0% | 0.0% | 100.0% | 0.0% |