Examiner Ernest F. Karlsen
Grant ratio: 0.0% (3rd percentile in Art Unit 2829 among examiners with at least 20 applications). Most common rejection type: §103.
Appears inactive
Last office action in data: January 2016
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 23 | 68.3% | 1.82 |
| Group | 207 | 71.2% | 1.64 |
| Tech Center | 2,413 | 62.4% | 1.69 |
| 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 | 15 | 28.8% |
| 2 OAs | 21 | 40.4% |
| 3 OAs | 12 | 23.1% |
| 4 OAs | 3 | 5.8% |
| 5+ OAs | 1 | 1.9% |
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 |
|---|---|---|---|
| 2009 | 26 | 0 | 0.0% |
| 2010 | 2 | 0 | 0.0% |
| 2011 | 6 | 0 | 0.0% |
| 2012 | 1 | 0 | 0.0% |
| 2013 | 7 | 0 | 0.0% |
| 2015 | 9 | 0 | 0.0% |
| 2016 | 1 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 52 | 0.0% | 30.8% | 67.3% | 1.9% |
| Action 2 | 37 | 0.0% | 43.2% | 56.8% | 0.0% |
| Action 3 | 16 | 0.0% | 37.5% | 62.5% | 0.0% |
| Action 4 | 4 | 0.0% | 25.0% | 75.0% | 0.0% |
| Action 5 | 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%
0.0%
2014: Alice
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.