Examiner Calvin E. Vansant
Grant ratio: 95.4% (45th percentile in Art Unit 2915 among examiners with at least 20 applications). Average office actions per grant: 1.21. Most common rejection type: §112.
Appears inactive
Last office action in data: December 2023
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 29 | 94.9% | 1.24 |
| Group | 461 | 94.5% | 1.19 |
| Tech Center | 486 | 94.3% | 1.20 |
| USPTO | 16,572 | 52.1% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 8 | 1.5% |
| 1 OA | 430 | 79.3% |
| 2 OAs | 90 | 16.6% |
| 3 OAs | 14 | 2.6% |
| 4 OAs | 0 | 0.0% |
| 5+ OAs | 0 | 0.0% |
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 |
|---|---|---|---|
| 2016 | 17 | 17 | 100.0% |
| 2017 | 53 | 53 | 100.0% |
| 2018 | 83 | 81 | 97.6% |
| 2019 | 72 | 71 | 98.6% |
| 2020 | 155 | 153 | 98.7% |
| 2021 | 86 | 70 | 81.4% |
| 2022 | 59 | 56 | 94.9% |
| 2023 | 17 | 16 | 94.1% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 534 | 0.0% | 4.1% | 4.9% | 82.2% |
| Action 2 | 104 | 1.0% | 6.7% | 10.6% | 76.9% |
| Action 3 | 14 | 0.0% | 21.4% | 7.1% | 64.3% |
Section 101 rejections
Last 3 years: 2023-10-02–2026-10-02. All years includes every dated office action in the data.
By year
0.0%
0.0%
0.0%
2019: PEG
0.0%
0.0%
0.0%
1.5%
0.0%
2024: AI examples
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 Oct. 9, 2026.