Examiner Examiner Anh Vo
Grant ratio: 86.4% (84th percentile in Art Unit 2853 among examiners with at least 20 applications). Average office actions per grant: 1.37. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 74351
- Primary art unit
- 2853
- Work group
- 2850
- Technology center
- 2800
- Applications
- 1,519
- Granted applications
- 1,313
- Examiner phone
- (571) 272-2262
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| 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 | 2 | 0.1% |
| 1 OA | 1,117 | 73.5% |
| 2 OAs | 283 | 18.6% |
| 3 OAs | 81 | 5.3% |
| 4 OAs | 28 | 1.8% |
| 5+ OAs | 8 | 0.5% |
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 |
|---|---|---|---|
| 2008 | 121 | 106 | 87.6% |
| 2009 | 114 | 98 | 86.0% |
| 2010 | 117 | 98 | 83.8% |
| 2011 | 105 | 91 | 86.7% |
| 2012 | 101 | 80 | 79.2% |
| 2013 | 87 | 77 | 88.5% |
| 2014 | 90 | 86 | 95.6% |
| 2015 | 91 | 87 | 95.6% |
| 2016 | 75 | 74 | 98.7% |
| 2017 | 62 | 60 | 96.8% |
| 2018 | 62 | 59 | 95.2% |
| 2019 | 65 | 57 | 87.7% |
| 2020 | 77 | 70 | 90.9% |
| 2021 | 72 | 68 | 94.4% |
| 2022 | 60 | 56 | 93.3% |
| 2023 | 55 | 51 | 92.7% |
| 2024 | 56 | 49 | 87.5% |
| 2025 | 83 | 46 | 55.4% |
| 2026 | 26 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 1,517 | 0.0% | 30.1% | 55.7% | 2.7% |
| Action 2 | 400 | 0.0% | 17.3% | 79.0% | 1.3% |
| Action 3 | 117 | 0.0% | 13.7% | 78.6% | 2.6% |
| Action 4 | 36 | 0.0% | 11.1% | 86.1% | 2.8% |
| Action 5 | 8 | 0.0% | 50.0% | 37.5% | 12.5% |
| Action 6 | 5 | 0.0% | 20.0% | 80.0% | 0.0% |
| Action 7 | 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%
2019: PEG
0.0%
0.0%
0.0%
0.0%
0.0%
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.