Examiner Donald Underwood
Grant ratio: 68.3% (54th percentile in Art Unit 3652 among examiners with at least 20 applications). Average office actions per grant: 1.94. Most common rejection type: §103.
Appears inactive
Last office action in data: November 2012
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 31 | 57.1% | 1.68 |
| Group | 255 | 56.6% | 1.70 |
| Tech Center | 2,381 | 46.2% | 2.12 |
| 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 | 110 | 45.3% |
| 2 OAs | 81 | 33.3% |
| 3 OAs | 34 | 14.0% |
| 4 OAs | 11 | 4.5% |
| 5+ OAs | 7 | 2.9% |
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 | 55 | 32 | 58.2% |
| 2009 | 54 | 37 | 68.5% |
| 2010 | 56 | 38 | 67.9% |
| 2011 | 45 | 34 | 75.6% |
| 2012 | 33 | 25 | 75.8% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 243 | 0.0% | 6.2% | 74.5% | 16.0% |
| Action 2 | 133 | 0.0% | 5.3% | 72.2% | 22.6% |
| Action 3 | 52 | 0.0% | 1.9% | 75.0% | 21.2% |
| Action 4 | 18 | 0.0% | 0.0% | 77.8% | 22.2% |
| Action 5 | 7 | 0.0% | 0.0% | 85.7% | 14.3% |
| Action 6 | 2 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 1 | 0.0% | 0.0% | 0.0% | 100.0% |
| Action 8 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 9 | 1 | 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%
0.0%
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.