Examiner Keith R. Campbell
Grant ratio: 86.7% (98th percentile in Art Unit 3651 among examiners with at least 20 applications). Average office actions per grant: 1.28. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 88302
- Primary art unit
- 3651
- Work group
- 3650
- Technology center
- 3600
- Applications
- 609
- Granted applications
- 528
- Examiner phone
- (571) 270-1015
- Supervisor
- Gene Crawford
- Supervisor phone
- (571) 272-6911
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 27 | 65.5% | 1.67 |
| Group | 255 | 56.6% | 1.70 |
| Tech Center | 2,381 | 46.2% | 2.12 |
| 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 | 482 | 79.0% |
| 2 OAs | 100 | 16.4% |
| 3 OAs | 22 | 3.6% |
| 4 OAs | 5 | 0.8% |
| 5+ OAs | 1 | 0.2% |
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 | 29 | 26 | 89.7% |
| 2013 | 57 | 49 | 86.0% |
| 2014 | 38 | 32 | 84.2% |
| 2015 | 53 | 44 | 83.0% |
| 2016 | 68 | 62 | 91.2% |
| 2017 | 60 | 55 | 91.7% |
| 2018 | 57 | 52 | 91.2% |
| 2019 | 57 | 54 | 94.7% |
| 2020 | 69 | 65 | 94.2% |
| 2021 | 24 | 24 | 100.0% |
| 2022 | 24 | 21 | 87.5% |
| 2023 | 23 | 22 | 95.7% |
| 2024 | 15 | 13 | 86.7% |
| 2025 | 21 | 9 | 42.9% |
| 2026 | 14 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 610 | 0.5% | 14.4% | 44.9% | 39.0% |
| Action 2 | 128 | 0.8% | 8.6% | 53.9% | 35.2% |
| Action 3 | 28 | 3.6% | 10.7% | 60.7% | 25.0% |
| Action 4 | 6 | 0.0% | 0.0% | 33.3% | 66.7% |
| 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%
2014: Alice
0.0%
1.4%
0.0%
1.1%
0.0%
2019: PEG
0.0%
2.8%
0.0%
0.0%
3.6%
2024: AI examples
0.0%
2025: August memo
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.