Examiner David Jung
Grant ratio: 86.0% (90th percentile in Art Unit 2434 among examiners with at least 20 applications). Average office actions per grant: 1.41. Most common rejection type: §103.
Appears inactive
Last office action in data: March 2013
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 33 | 64.9% | 1.70 |
| Group | 233 | 61.7% | 1.99 |
| Tech Center | 1,754 | 58.4% | 2.14 |
| 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 | 177 | 70.8% |
| 2 OAs | 57 | 22.8% |
| 3 OAs | 9 | 3.6% |
| 4 OAs | 7 | 2.8% |
| 5+ OAs | 0 | 0.0% |
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 | 74 | 61 | 82.4% |
| 2009 | 39 | 32 | 82.1% |
| 2010 | 58 | 54 | 93.1% |
| 2011 | 35 | 31 | 88.6% |
| 2012 | 33 | 26 | 78.8% |
| 2013 | 11 | 11 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 250 | 10.4% | 5.6% | 64.0% | 7.2% |
| Action 2 | 73 | 5.5% | 2.7% | 65.8% | 5.5% |
| Action 3 | 16 | 6.3% | 6.3% | 62.5% | 12.5% |
| Action 4 | 7 | 0.0% | 42.9% | 57.1% | 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
5.1%
20.3%
1.3%
1.7%
25.6%
9.1%
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.