Examiner Lan-Dai Thi Truong
Grant ratio: 86.5% (97th percentile in Art Unit 2452 among examiners with at least 20 applications). Average office actions per grant: 1.87.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 80708
- Primary art unit
- 2452
- Work group
- 2450
- Technology center
- 2400
- Applications
- 790
- Granted applications
- 683
- Examiner phone
- (571) 272-7959
- Supervisor
- John Follansbee
- Supervisor phone
- (571) 272-3964
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 20 | 64.1% | 2.20 |
| Group | 210 | 57.4% | 2.41 |
| Tech Center | 1,754 | 58.4% | 2.14 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 4 | 0.5% |
| 1 OA | 400 | 50.6% |
| 2 OAs | 221 | 28.0% |
| 3 OAs | 85 | 10.8% |
| 4 OAs | 50 | 6.3% |
| 5+ OAs | 30 | 3.8% |
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 | 19 | 12 | 63.2% |
| 2009 | 22 | 13 | 59.1% |
| 2010 | 11 | 6 | 54.5% |
| 2011 | 65 | 57 | 87.7% |
| 2012 | 46 | 38 | 82.6% |
| 2013 | 65 | 53 | 81.5% |
| 2014 | 43 | 40 | 93.0% |
| 2015 | 44 | 40 | 90.9% |
| 2016 | 49 | 44 | 89.8% |
| 2017 | 60 | 60 | 100.0% |
| 2018 | 54 | 53 | 98.1% |
| 2019 | 46 | 45 | 97.8% |
| 2020 | 40 | 39 | 97.5% |
| 2021 | 31 | 31 | 100.0% |
| 2022 | 46 | 46 | 100.0% |
| 2023 | 43 | 43 | 100.0% |
| 2024 | 51 | 50 | 98.0% |
| 2025 | 33 | 13 | 39.4% |
| 2026 | 22 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 786 | 7.8% | 3.4% | 17.7% | 13.6% |
| Action 2 | 386 | 11.4% | 1.3% | 14.8% | 19.9% |
| Action 3 | 165 | 6.7% | 1.2% | 11.5% | 21.2% |
| Action 4 | 80 | 2.5% | 1.3% | 16.3% | 18.8% |
| Action 5 | 30 | 13.3% | 3.3% | 16.7% | 23.3% |
| Action 6 | 16 | 6.3% | 0.0% | 12.5% | 18.8% |
| Action 7 | 8 | 12.5% | 12.5% | 12.5% | 0.0% |
| Action 8 | 3 | 0.0% | 33.3% | 33.3% | 0.0% |
| Action 9 | 1 | 0.0% | 0.0% | 0.0% | 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
11.0%
14.1%
22.6%
9.1%
8.7%
6.9%
2014: Alice
1.4%
1.4%
3.5%
9.1%
36.3%
2019: PEG
2.0%
0.0%
0.0%
0.0%
3.6%
2024: AI examples
0.0%
2025: August memo
2.1%
3.6%
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.