Examiner Frederick Wenderoth
Grant ratio: 87.1% (75th percentile in Art Unit 2852 among examiners with at least 20 applications). Average office actions per grant: 1.23. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 87923
- Primary art unit
- 2852
- Work group
- 2850
- Technology center
- 2800
- Applications
- 753
- Granted applications
- 656
- Examiner phone
- (571) 270-1945
- Supervisor
- Walter Lindsay
- Supervisor phone
- (571) 272-1674
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 59 | 80.7% | 1.48 |
| 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 | 4 | 0.5% |
| 1 OA | 623 | 82.7% |
| 2 OAs | 96 | 12.7% |
| 3 OAs | 20 | 2.7% |
| 4 OAs | 7 | 0.9% |
| 5+ OAs | 3 | 0.4% |
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 |
|---|---|---|---|
| 2011 | 20 | 17 | 85.0% |
| 2012 | 65 | 63 | 96.9% |
| 2013 | 51 | 44 | 86.3% |
| 2014 | 44 | 39 | 88.6% |
| 2015 | 40 | 38 | 95.0% |
| 2016 | 38 | 35 | 92.1% |
| 2017 | 59 | 52 | 88.1% |
| 2018 | 49 | 47 | 95.9% |
| 2019 | 43 | 39 | 90.7% |
| 2020 | 55 | 49 | 89.1% |
| 2021 | 46 | 44 | 95.7% |
| 2022 | 51 | 49 | 96.1% |
| 2023 | 52 | 49 | 94.2% |
| 2024 | 63 | 61 | 96.8% |
| 2025 | 46 | 30 | 65.2% |
| 2026 | 31 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 749 | 1.3% | 3.6% | 88.9% | 1.2% |
| Action 2 | 126 | 0.8% | 7.1% | 86.5% | 2.4% |
| Action 3 | 30 | 0.0% | 10.0% | 83.3% | 3.3% |
| Action 4 | 10 | 0.0% | 30.0% | 60.0% | 10.0% |
| Action 5 | 3 | 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
2.8%
1.3%
0.0%
2014: Alice
0.0%
0.0%
0.0%
2.6%
0.0%
2019: PEG
0.0%
0.0%
0.0%
0.0%
7.0%
2024: AI examples
3.1%
2025: August memo
2.0%
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.