Examiner Jack Dinh
Grant ratio: 80.0% (83rd percentile in Art Unit 2872 among examiners with at least 20 applications). Average office actions per grant: 1.48. Most common rejection type: §102.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 79479
- Primary art unit
- 2872
- Work group
- 2870
- Technology center
- 2800
- Applications
- 684
- Granted applications
- 547
- Examiner phone
- (571) 272-2327
- 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 | 450 | 65.8% |
| 2 OAs | 170 | 24.9% |
| 3 OAs | 39 | 5.7% |
| 4 OAs | 15 | 2.2% |
| 5+ OAs | 10 | 1.5% |
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 | 34 | 30 | 88.2% |
| 2009 | 43 | 35 | 81.4% |
| 2010 | 54 | 43 | 79.6% |
| 2011 | 40 | 35 | 87.5% |
| 2012 | 47 | 43 | 91.5% |
| 2013 | 61 | 53 | 86.9% |
| 2014 | 36 | 30 | 83.3% |
| 2015 | 31 | 27 | 87.1% |
| 2016 | 42 | 36 | 85.7% |
| 2017 | 36 | 35 | 97.2% |
| 2018 | 47 | 44 | 93.6% |
| 2019 | 26 | 21 | 80.8% |
| 2020 | 23 | 19 | 82.6% |
| 2021 | 23 | 18 | 78.3% |
| 2022 | 23 | 21 | 91.3% |
| 2023 | 25 | 22 | 88.0% |
| 2024 | 34 | 27 | 79.4% |
| 2025 | 40 | 8 | 20.0% |
| 2026 | 19 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 684 | 6.7% | 42.8% | 29.5% | 13.2% |
| Action 2 | 234 | 2.1% | 29.9% | 40.6% | 22.6% |
| Action 3 | 64 | 3.1% | 28.1% | 50.0% | 18.8% |
| Action 4 | 25 | 0.0% | 28.0% | 44.0% | 24.0% |
| Action 5 | 10 | 10.0% | 10.0% | 30.0% | 40.0% |
| Action 6 | 4 | 0.0% | 25.0% | 50.0% | 25.0% |
| Action 7 | 3 | 0.0% | 33.3% | 33.3% | 33.3% |
| Action 8 | 2 | 0.0% | 0.0% | 100.0% | 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%
3.0%
2.7%
1.6%
6.6%
2.5%
2014: Alice
3.9%
7.8%
4.3%
0.0%
38.3%
2019: PEG
5.6%
2.7%
9.5%
0.0%
4.4%
2024: AI examples
1.8%
2025: August memo
1.4%
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.