Examiner Chuka C. Ndubizu
Grant ratio: 35.1% (32nd percentile in Art Unit 3743 among examiners with at least 20 applications). Average office actions per grant: 2.26. Most common rejection type: §103.
Appears inactive
Last office action in data: July 2011
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 21 | 36.6% | 1.78 |
| Group | 444 | 57.6% | 1.86 |
| Tech Center | 2,671 | 48.4% | 2.01 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 83 | 44.9% |
| 2 OAs | 60 | 32.4% |
| 3 OAs | 21 | 11.4% |
| 4 OAs | 14 | 7.6% |
| 5+ OAs | 7 | 3.8% |
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 |
|---|---|---|---|
| 2008 | 52 | 18 | 34.6% |
| 2009 | 64 | 23 | 35.9% |
| 2010 | 47 | 16 | 34.0% |
| 2011 | 22 | 8 | 36.4% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 185 | 0.5% | 2.2% | 90.3% | 3.8% |
| Action 2 | 102 | 0.0% | 2.9% | 85.3% | 4.9% |
| Action 3 | 42 | 0.0% | 0.0% | 90.5% | 2.4% |
| Action 4 | 21 | 0.0% | 0.0% | 90.5% | 4.8% |
| Action 5 | 7 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 3 | 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
0.0%
0.0%
0.9%
0.0%
0.0%
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.