Examiner Alexander C. Witkowski
Grant ratio: 80.5% (61st percentile in Art Unit 2853 among examiners with at least 20 applications). Average office actions per grant: 2.03. 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 | 52 | 63.5% | 1.63 |
| Group | 380 | 61.0% | 1.65 |
| 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 | 162 | 37.6% |
| 2 OAs | 170 | 39.4% |
| 3 OAs | 53 | 12.3% |
| 4 OAs | 37 | 8.6% |
| 5+ OAs | 9 | 2.1% |
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 | 30 | 20 | 66.7% |
| 2009 | 78 | 71 | 91.0% |
| 2010 | 102 | 83 | 81.4% |
| 2011 | 69 | 49 | 71.0% |
| 2012 | 59 | 41 | 69.5% |
| 2013 | 73 | 65 | 89.0% |
| 2014 | 19 | 17 | 89.5% |
| 2015 | 1 | 1 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 431 | 0.0% | 22.5% | 75.9% | 0.2% |
| Action 2 | 269 | 0.0% | 11.2% | 86.2% | 0.7% |
| Action 3 | 99 | 0.0% | 4.0% | 91.9% | 0.0% |
| Action 4 | 46 | 0.0% | 4.3% | 91.3% | 2.2% |
| Action 5 | 9 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 2 | 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%
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.