Examiner Sai-Ming Chan
Grant ratio: 89.2% (98th percentile in Art Unit 2462 among examiners with at least 20 applications). Average office actions per grant: 1.65. Most common rejection type: §103.
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 | 24 | 66.0% | 2.10 |
| Group | 225 | 60.1% | 2.07 |
| 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 | 0 | 0.0% |
| 1 OA | 723 | 64.7% |
| 2 OAs | 225 | 20.1% |
| 3 OAs | 82 | 7.3% |
| 4 OAs | 51 | 4.6% |
| 5+ OAs | 36 | 3.2% |
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 | 44 | 29 | 65.9% |
| 2009 | 49 | 34 | 69.4% |
| 2010 | 44 | 38 | 86.4% |
| 2011 | 54 | 43 | 79.6% |
| 2012 | 105 | 95 | 90.5% |
| 2013 | 75 | 71 | 94.7% |
| 2014 | 71 | 67 | 94.4% |
| 2015 | 58 | 56 | 96.6% |
| 2016 | 72 | 66 | 91.7% |
| 2017 | 77 | 68 | 88.3% |
| 2018 | 64 | 55 | 85.9% |
| 2019 | 65 | 58 | 89.2% |
| 2020 | 63 | 61 | 96.8% |
| 2021 | 65 | 58 | 89.2% |
| 2022 | 70 | 68 | 97.1% |
| 2023 | 59 | 55 | 93.2% |
| 2024 | 59 | 55 | 93.2% |
| 2025 | 3 | 2 | 66.7% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 1,117 | 0.5% | 9.8% | 77.1% | 0.3% |
| Action 2 | 394 | 1.0% | 3.0% | 89.3% | 0.8% |
| Action 3 | 169 | 0.6% | 3.6% | 91.7% | 1.2% |
| Action 4 | 87 | 1.1% | 3.4% | 88.5% | 1.1% |
| Action 5 | 36 | 2.8% | 0.0% | 94.4% | 0.0% |
| Action 6 | 23 | 4.3% | 0.0% | 91.3% | 0.0% |
| Action 7 | 16 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 8 | 6 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 9 | 1 | 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%
1.3%
1.4%
0.6%
1.3%
1.1%
2014: Alice
2.7%
0.0%
1.0%
0.0%
1.2%
2019: PEG
0.0%
1.1%
0.0%
0.0%
0.0%
2024: AI examples
0.0%
2025: August memo
12.5%
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.