Examiner Tan Ho
Grant ratio: 88.3% (95th percentile in Art Unit 2821 among examiners with at least 20 applications). Average office actions per grant: 1.27. Most common rejection type: §103.
Appears inactive
Last office action in data: November 2015
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 15 | 67.6% | 1.44 |
| Group | 208 | 70.3% | 1.64 |
| Tech Center | 2,435 | 61.3% | 1.69 |
| USPTO | 16,620 | 51.8% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 285 | 81.7% |
| 2 OAs | 43 | 12.3% |
| 3 OAs | 18 | 5.2% |
| 4 OAs | 2 | 0.6% |
| 5+ OAs | 1 | 0.3% |
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 | 38 | 86.4% |
| 2009 | 61 | 51 | 83.6% |
| 2010 | 48 | 44 | 91.7% |
| 2011 | 50 | 48 | 96.0% |
| 2012 | 40 | 34 | 85.0% |
| 2013 | 44 | 40 | 90.9% |
| 2014 | 40 | 33 | 82.5% |
| 2015 | 22 | 20 | 90.9% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 349 | 2.3% | 22.3% | 55.0% | 2.9% |
| Action 2 | 64 | 0.0% | 21.9% | 53.1% | 1.6% |
| Action 3 | 21 | 0.0% | 28.6% | 52.4% | 0.0% |
| Action 4 | 3 | 0.0% | 33.3% | 33.3% | 0.0% |
| Action 5 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
Section 101 rejections
Last 3 years: 2023-10-23–2026-10-23. All years includes every dated office action in the data.
By year
3.1%
0.0%
1.5%
1.6%
4.2%
2.0%
2014: Alice
2.4%
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 Oct. 30, 2026.