Examiner Khai M. Nguyen
Grant ratio: 90.6% (90th percentile in Art Unit 2845 among examiners with at least 20 applications). Average office actions per grant: 1.11. Most common rejection type: §102.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 78742
- Primary art unit
- 2845
- Work group
- 2840
- Technology center
- 2800
- Applications
- 669
- Granted applications
- 606
- Examiner phone
- (571) 272-1809
- Supervisor
- Dameon E. Levi
- Supervisor phone
- (571) 272-2105
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 50 | 67.0% | 1.67 |
| Group | 231 | 68.9% | 1.60 |
| 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 | 0 | 0.0% |
| 1 OA | 607 | 90.7% |
| 2 OAs | 54 | 8.1% |
| 3 OAs | 8 | 1.2% |
| 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 |
|---|---|---|---|
| 2008 | 44 | 39 | 88.6% |
| 2009 | 57 | 51 | 89.5% |
| 2010 | 55 | 54 | 98.2% |
| 2011 | 43 | 39 | 90.7% |
| 2012 | 41 | 39 | 95.1% |
| 2013 | 33 | 30 | 90.9% |
| 2014 | 18 | 17 | 94.4% |
| 2015 | 30 | 29 | 96.7% |
| 2016 | 46 | 44 | 95.7% |
| 2017 | 38 | 35 | 92.1% |
| 2018 | 42 | 40 | 95.2% |
| 2019 | 40 | 37 | 92.5% |
| 2020 | 21 | 20 | 95.2% |
| 2021 | 30 | 29 | 96.7% |
| 2022 | 25 | 24 | 96.0% |
| 2023 | 38 | 35 | 92.1% |
| 2024 | 28 | 28 | 100.0% |
| 2025 | 25 | 16 | 64.0% |
| 2026 | 15 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 669 | 4.3% | 52.5% | 24.8% | 1.3% |
| Action 2 | 62 | 0.0% | 50.0% | 41.9% | 1.6% |
| Action 3 | 8 | 0.0% | 25.0% | 50.0% | 25.0% |
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%
1.4%
10.5%
9.3%
4.8%
0.0%
2014: Alice
10.5%
5.1%
5.7%
0.0%
0.0%
2019: PEG
2.3%
4.2%
2.9%
3.7%
2.5%
2024: AI examples
6.5%
2025: August memo
7.7%
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.