Examiner Mark Luderer
Grant ratio: 82.0% (86th percentile in Art Unit 1671 among examiners with at least 20 applications). Average office actions per grant: 1.49. Most common rejection type: §103.
Appears inactive
Last office action in data: June 2019
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 15 | 32.5% | 1.60 |
| Group | 84 | 29.7% | 1.91 |
| Tech Center | 1,373 | 38.0% | 2.02 |
| 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 | 301 | 65.0% |
| 2 OAs | 124 | 26.8% |
| 3 OAs | 23 | 5.0% |
| 4 OAs | 12 | 2.6% |
| 5+ OAs | 3 | 0.6% |
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 | 2 | 2 | 100.0% |
| 2013 | 29 | 19 | 65.5% |
| 2014 | 70 | 50 | 71.4% |
| 2015 | 64 | 50 | 78.1% |
| 2016 | 82 | 71 | 86.6% |
| 2017 | 78 | 67 | 85.9% |
| 2018 | 74 | 65 | 87.8% |
| 2019 | 40 | 36 | 90.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 463 | 1.9% | 11.0% | 42.8% | 32.8% |
| Action 2 | 162 | 0.0% | 12.3% | 59.9% | 20.4% |
| Action 3 | 38 | 0.0% | 10.5% | 71.1% | 13.2% |
| Action 4 | 15 | 0.0% | 6.7% | 66.7% | 6.7% |
| Action 5 | 3 | 0.0% | 0.0% | 66.7% | 33.3% |
| 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%
1.3%
2014: Alice
0.0%
2.1%
0.0%
2.9%
2.0%
2019: PEG
1.6%
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.