Examiner Tuyen Tra
Grant ratio: 81.8% (84th percentile in Art Unit 2872 among examiners with at least 20 applications). Average office actions per grant: 1.36. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 78421
- Primary art unit
- 2872
- Work group
- 2870
- Technology center
- 2800
- Applications
- 1,039
- Granted applications
- 850
- Examiner phone
- (571) 272-2343
- Supervisor
- Bumsuk Won
- Supervisor phone
- (571) 272-2713
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 102 | 61.9% | 1.70 |
| Group | 351 | 61.2% | 1.71 |
| 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 | 771 | 74.2% |
| 2 OAs | 199 | 19.2% |
| 3 OAs | 48 | 4.6% |
| 4 OAs | 16 | 1.5% |
| 5+ OAs | 5 | 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 | 46 | 34 | 73.9% |
| 2009 | 61 | 51 | 83.6% |
| 2010 | 64 | 55 | 85.9% |
| 2011 | 60 | 51 | 85.0% |
| 2012 | 81 | 65 | 80.2% |
| 2013 | 70 | 53 | 75.7% |
| 2014 | 55 | 46 | 83.6% |
| 2015 | 49 | 44 | 89.8% |
| 2016 | 59 | 52 | 88.1% |
| 2017 | 48 | 43 | 89.6% |
| 2018 | 56 | 52 | 92.9% |
| 2019 | 62 | 60 | 96.8% |
| 2020 | 47 | 44 | 93.6% |
| 2021 | 47 | 44 | 93.6% |
| 2022 | 52 | 46 | 88.5% |
| 2023 | 47 | 42 | 89.4% |
| 2024 | 48 | 44 | 91.7% |
| 2025 | 56 | 24 | 42.9% |
| 2026 | 31 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 1,039 | 1.3% | 18.2% | 69.0% | 7.7% |
| Action 2 | 268 | 0.0% | 11.9% | 73.5% | 8.2% |
| Action 3 | 69 | 0.0% | 8.7% | 78.3% | 10.1% |
| Action 4 | 21 | 0.0% | 4.8% | 95.2% | 0.0% |
| Action 5 | 5 | 0.0% | 20.0% | 80.0% | 0.0% |
| Action 6 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 1 | 0.0% | 0.0% | 0.0% | 100.0% |
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%
0.7%
0.0%
2014: Alice
0.0%
0.0%
2.6%
0.0%
2.9%
2019: PEG
2.8%
0.0%
0.0%
3.4%
5.5%
2024: AI examples
1.8%
2025: August memo
1.7%
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.