Examiner John P. Zimmermann
Grant ratio: 2.7% (9th percentile in Art Unit 2853 among examiners with at least 20 applications). Average office actions per grant: 2.00. Most common rejection type: §103.
Appears inactive
Last office action in data: November 2021
Examiner record
Save this analysis
Download this examiner report.
Log in / Sign Up to exportPeer comparisons
| 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 | 18 | 46.2% |
| 2 OAs | 9 | 23.1% |
| 3 OAs | 3 | 7.7% |
| 4 OAs | 4 | 10.3% |
| 5+ OAs | 5 | 12.8% |
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 |
|---|---|---|---|
| 2009 | 2 | 0 | 0.0% |
| 2010 | 7 | 0 | 0.0% |
| 2011 | 6 | 0 | 0.0% |
| 2013 | 1 | 0 | 0.0% |
| 2014 | 2 | 0 | 0.0% |
| 2015 | 6 | 0 | 0.0% |
| 2016 | 1 | 0 | 0.0% |
| 2020 | 4 | 0 | 0.0% |
| 2021 | 8 | 1 | 12.5% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 39 | 0.0% | 12.8% | 79.5% | 5.1% |
| Action 2 | 21 | 0.0% | 0.0% | 95.2% | 4.8% |
| Action 3 | 12 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 4 | 9 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 5 | 5 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 2 | 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%
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.