Examiner Trung Nguyen
Grant ratio: 84.0% (63rd percentile in Art Unit 2866 among examiners with at least 20 applications). Average office actions per grant: 1.49. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 78490
- Primary art unit
- 2866
- Work group
- 2860
- Technology center
- 2800
- Applications
- 885
- Granted applications
- 743
- Examiner phone
- (571) 272-1966
- Supervisor
- Koval Melissa
- Supervisor phone
- (571) 272-2121
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 14 | 82.7% | 1.52 |
| Group | 131 | 67.2% | 1.82 |
| 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 | 1 | 0.1% |
| 1 OA | 599 | 67.7% |
| 2 OAs | 199 | 22.5% |
| 3 OAs | 52 | 5.9% |
| 4 OAs | 24 | 2.7% |
| 5+ OAs | 10 | 1.1% |
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 |
|---|---|---|---|
| 2009 | 1 | 1 | 100.0% |
| 2011 | 34 | 28 | 82.4% |
| 2012 | 17 | 15 | 88.2% |
| 2013 | 57 | 53 | 93.0% |
| 2014 | 68 | 56 | 82.4% |
| 2015 | 37 | 33 | 89.2% |
| 2016 | 56 | 49 | 87.5% |
| 2017 | 64 | 60 | 93.8% |
| 2018 | 69 | 64 | 92.8% |
| 2019 | 90 | 77 | 85.6% |
| 2020 | 86 | 79 | 91.9% |
| 2021 | 37 | 34 | 91.9% |
| 2022 | 59 | 57 | 96.6% |
| 2023 | 49 | 47 | 95.9% |
| 2024 | 65 | 63 | 96.9% |
| 2025 | 52 | 27 | 51.9% |
| 2026 | 44 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 884 | 4.1% | 16.1% | 69.0% | 2.9% |
| Action 2 | 285 | 6.0% | 15.4% | 69.8% | 4.2% |
| Action 3 | 86 | 5.8% | 8.1% | 79.1% | 5.8% |
| Action 4 | 34 | 2.9% | 8.8% | 76.5% | 11.8% |
| Action 5 | 10 | 0.0% | 0.0% | 80.0% | 20.0% |
| Action 6 | 4 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 2 | 0.0% | 0.0% | 50.0% | 50.0% |
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%
2014: Alice
2.9%
3.5%
1.2%
0.0%
7.0%
2019: PEG
1.5%
0.0%
1.6%
7.4%
28.2%
2024: AI examples
11.6%
2025: August memo
0.0%
4.1%
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.