Examiner David Schmerfeld
Grant ratio: 30.4% (15th percentile in Art Unit 1742 among examiners with at least 20 applications). Average office actions per grant: 2.12. Most common rejection type: §103.
Appears inactive
Last office action in data: January 2015
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 26 | 52.6% | 2.07 |
| Group | 211 | 48.8% | 2.05 |
| Tech Center | 1,792 | 44.3% | 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 | 22 | 39.3% |
| 2 OAs | 15 | 26.8% |
| 3 OAs | 8 | 14.3% |
| 4 OAs | 10 | 17.9% |
| 5+ OAs | 1 | 1.8% |
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 |
|---|---|---|---|
| 2012 | 3 | 1 | 33.3% |
| 2013 | 28 | 10 | 35.7% |
| 2014 | 24 | 5 | 20.8% |
| 2015 | 1 | 1 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 56 | 0.0% | 8.9% | 91.1% | 0.0% |
| Action 2 | 34 | 0.0% | 5.9% | 94.1% | 0.0% |
| Action 3 | 19 | 0.0% | 0.0% | 89.5% | 0.0% |
| Action 4 | 11 | 0.0% | 9.1% | 81.8% | 9.1% |
| Action 5 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 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%
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 Aug. 27, 2026.