Examiner Khanh V. Nguyen
Grant ratio: 89.6% (97th percentile in Art Unit 2843 among examiners with at least 20 applications). Average office actions per grant: 1.27. Most common rejection type: §103.
Recently active
Last office action in data: September 2026
Examiner record
- Examiner ID
- 74919
- Primary art unit
- 2843
- Work group
- 2840
- Technology center
- 2800
- Applications
- 1,227
- Granted applications
- 1,099
- Examiner phone
- (571) 272-1767
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 23 | 52.9% | 1.37 |
| Group | 232 | 67.9% | 1.60 |
| Tech Center | 2,428 | 61.6% | 1.69 |
| USPTO | 16,572 | 52.1% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 950 | 77.4% |
| 2 OAs | 220 | 17.9% |
| 3 OAs | 47 | 3.8% |
| 4 OAs | 8 | 0.7% |
| 5+ OAs | 2 | 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 |
|---|---|---|---|
| 2008 | 78 | 69 | 88.5% |
| 2009 | 81 | 75 | 92.6% |
| 2010 | 71 | 67 | 94.4% |
| 2011 | 77 | 71 | 92.2% |
| 2012 | 74 | 73 | 98.6% |
| 2013 | 78 | 74 | 94.9% |
| 2014 | 63 | 58 | 92.1% |
| 2015 | 70 | 65 | 92.9% |
| 2016 | 57 | 52 | 91.2% |
| 2017 | 71 | 67 | 94.4% |
| 2018 | 64 | 63 | 98.4% |
| 2019 | 57 | 55 | 96.5% |
| 2020 | 66 | 62 | 93.9% |
| 2021 | 59 | 56 | 94.9% |
| 2022 | 55 | 54 | 98.2% |
| 2023 | 51 | 49 | 96.1% |
| 2024 | 63 | 56 | 88.9% |
| 2025 | 53 | 33 | 62.3% |
| 2026 | 39 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 1,227 | 1.2% | 28.6% | 43.5% | 21.7% |
| Action 2 | 277 | 0.4% | 24.2% | 42.2% | 19.9% |
| Action 3 | 57 | 0.0% | 28.1% | 47.4% | 21.1% |
| Action 4 | 10 | 0.0% | 30.0% | 40.0% | 20.0% |
| Action 5 | 2 | 0.0% | 0.0% | 50.0% | 50.0% |
| Action 6 | 2 | 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: 2023-10-02–2026-10-02. All years includes every dated office action in the data.
By year
2.9%
0.9%
0.0%
0.0%
1.0%
0.0%
2014: Alice
1.3%
1.2%
1.3%
0.0%
2.6%
2019: PEG
0.0%
0.0%
2.9%
1.5%
1.4%
2024: AI examples
0.0%
2025: August memo
1.6%
2.2%
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.