Examiner Michael Trettel
Grant ratio: 79.6% (98th percentile in Art Unit 3673 among examiners with at least 20 applications). Average office actions per grant: 1.34. Most common rejection type: §103.
Appears inactive
Last office action in data: September 2015
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 32 | 52.8% | 1.84 |
| Group | 238 | 58.8% | 1.84 |
| 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 | 505 | 75.7% |
| 2 OAs | 133 | 19.9% |
| 3 OAs | 15 | 2.2% |
| 4 OAs | 9 | 1.3% |
| 5+ OAs | 5 | 0.7% |
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 | 84 | 60 | 71.4% |
| 2009 | 106 | 76 | 71.7% |
| 2010 | 89 | 68 | 76.4% |
| 2011 | 90 | 77 | 85.6% |
| 2012 | 98 | 81 | 82.7% |
| 2013 | 77 | 62 | 80.5% |
| 2014 | 81 | 69 | 85.2% |
| 2015 | 42 | 38 | 90.5% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 667 | 0.3% | 37.6% | 38.4% | 17.8% |
| Action 2 | 162 | 0.0% | 32.1% | 40.7% | 8.6% |
| Action 3 | 29 | 0.0% | 20.7% | 48.3% | 0.0% |
| Action 4 | 14 | 0.0% | 14.3% | 64.3% | 7.1% |
| Action 5 | 5 | 0.0% | 20.0% | 60.0% | 20.0% |
| Action 6 | 4 | 0.0% | 50.0% | 50.0% | 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%
1.6%
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.