Examiner Anh H. Do
Grant ratio: 93.0% (99th percentile in Art Unit 2666 among examiners with at least 20 applications). Average office actions per grant: 1.25. Most common rejection type: §101.
Appears inactive
Last office action in data: October 2017
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 38 | 64.4% | 1.71 |
| Group | 289 | 63.2% | 1.66 |
| Tech Center | 1,754 | 57.4% | 1.88 |
| 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 | 527 | 82.2% |
| 2 OAs | 89 | 13.9% |
| 3 OAs | 14 | 2.2% |
| 4 OAs | 10 | 1.6% |
| 5+ OAs | 1 | 0.2% |
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 | 43 | 36 | 83.7% |
| 2009 | 76 | 67 | 88.2% |
| 2010 | 63 | 59 | 93.7% |
| 2011 | 59 | 54 | 91.5% |
| 2012 | 75 | 71 | 94.7% |
| 2013 | 80 | 79 | 98.8% |
| 2014 | 75 | 73 | 97.3% |
| 2015 | 60 | 55 | 91.7% |
| 2016 | 58 | 53 | 91.4% |
| 2017 | 52 | 49 | 94.2% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 641 | 59.6% | 11.1% | 5.9% | 11.5% |
| Action 2 | 114 | 42.1% | 16.7% | 12.3% | 16.7% |
| Action 3 | 25 | 28.0% | 16.0% | 28.0% | 20.0% |
| Action 4 | 11 | 36.4% | 27.3% | 18.2% | 18.2% |
| Action 5 | 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
40.5%
54.1%
55.7%
62.5%
73.3%
72.1%
2014: Alice
62.2%
56.5%
51.9%
18.5%
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.