Examiner Tan T. Nguyen
Grant ratio: 94.9% (94th percentile in Art Unit 2827 among examiners with at least 20 applications). Average office actions per grant: 1.20.
Appears inactive
Last office action in data: February 2025
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 26 | 76.2% | 1.39 |
| Group | 207 | 71.2% | 1.64 |
| 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 | 660 | 83.1% |
| 2 OAs | 113 | 14.2% |
| 3 OAs | 17 | 2.1% |
| 4 OAs | 4 | 0.5% |
| 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 | 48 | 42 | 87.5% |
| 2009 | 61 | 54 | 88.5% |
| 2010 | 49 | 49 | 100.0% |
| 2011 | 42 | 38 | 90.5% |
| 2012 | 39 | 38 | 97.4% |
| 2013 | 57 | 56 | 98.2% |
| 2014 | 29 | 28 | 96.6% |
| 2015 | 44 | 43 | 97.7% |
| 2016 | 64 | 58 | 90.6% |
| 2017 | 41 | 37 | 90.2% |
| 2018 | 54 | 49 | 90.7% |
| 2019 | 45 | 45 | 100.0% |
| 2020 | 41 | 41 | 100.0% |
| 2021 | 40 | 40 | 100.0% |
| 2022 | 55 | 53 | 96.4% |
| 2023 | 49 | 48 | 98.0% |
| 2024 | 24 | 24 | 100.0% |
| 2025 | 3 | 2 | 66.7% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 794 | 3.3% | 21.9% | 14.4% | 24.7% |
| Action 2 | 134 | 9.0% | 32.1% | 29.1% | 9.7% |
| Action 3 | 21 | 19.0% | 42.9% | 28.6% | 4.8% |
| Action 4 | 4 | 25.0% | 0.0% | 75.0% | 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%
1.3%
3.4%
0.0%
2.3%
0.0%
2014: Alice
0.0%
2.0%
2.5%
22.4%
21.5%
2019: PEG
2.0%
0.0%
0.0%
1.6%
0.0%
2024: AI examples
9.4%
2025: August memo
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.