Examiner David H. Vu
Grant ratio: 78.3% (59th percentile in Art Unit 2821 among examiners with at least 20 applications). Average office actions per grant: 1.22. Most common rejection type: §103.
Appears inactive
Last office action in data: April 2015
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 15 | 67.6% | 1.44 |
| Group | 208 | 70.3% | 1.64 |
| Tech Center | 2,435 | 61.3% | 1.69 |
| USPTO | 16,620 | 51.8% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 229 | 81.5% |
| 2 OAs | 45 | 16.0% |
| 3 OAs | 4 | 1.4% |
| 4 OAs | 2 | 0.7% |
| 5+ OAs | 1 | 0.4% |
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 | 39 | 26 | 66.7% |
| 2009 | 36 | 25 | 69.4% |
| 2010 | 43 | 36 | 83.7% |
| 2011 | 39 | 28 | 71.8% |
| 2012 | 47 | 45 | 95.7% |
| 2013 | 33 | 27 | 81.8% |
| 2014 | 33 | 25 | 75.8% |
| 2015 | 11 | 8 | 72.7% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 281 | 1.4% | 15.3% | 61.9% | 9.6% |
| Action 2 | 52 | 1.9% | 7.7% | 65.4% | 1.9% |
| Action 3 | 7 | 14.3% | 14.3% | 57.1% | 0.0% |
| Action 4 | 3 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 5 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
Section 101 rejections
Last 3 years: 2023-10-23–2026-10-23. All years includes every dated office action in the data.
By year
0.0%
4.3%
2.0%
1.8%
1.8%
2.5%
2014: Alice
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 Oct. 30, 2026.