Examiner Tiffany K Luu
Grant ratio: 55.6% (42nd percentile in Art Unit 3669 among examiners with at least 20 applications). Average office actions per grant: 2.25. Most common rejection type: §103.
Appears inactive
Last office action in data: January 2021
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 55 | 56.5% | 1.85 |
| Group | 454 | 54.1% | 1.86 |
| Tech Center | 2,381 | 46.2% | 2.12 |
| 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 | 17 | 34.7% |
| 2 OAs | 19 | 38.8% |
| 3 OAs | 8 | 16.3% |
| 4 OAs | 4 | 8.2% |
| 5+ OAs | 1 | 2.0% |
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 |
|---|---|---|---|
| 2019 | 9 | 7 | 77.8% |
| 2020 | 26 | 12 | 46.2% |
| 2021 | 1 | 1 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 49 | 0.0% | 6.1% | 89.8% | 4.1% |
| Action 2 | 32 | 0.0% | 3.1% | 90.6% | 6.3% |
| Action 3 | 13 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 4 | 5 | 0.0% | 0.0% | 60.0% | 40.0% |
| Action 5 | 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
2019: PEG
0.0%
0.0%
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.