Examiner David Lam
Grant ratio: 95.9% (91st percentile in Art Unit 2825 among examiners with at least 20 applications). Average office actions per grant: 1.19. Most common rejection type: §103.
Appears inactive
Last office action in data: May 2021
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 21 | 60.8% | 1.48 |
| Group | 207 | 71.2% | 1.64 |
| 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 | 579 | 83.9% |
| 2 OAs | 93 | 13.5% |
| 3 OAs | 15 | 2.2% |
| 4 OAs | 2 | 0.3% |
| 5+ OAs | 1 | 0.1% |
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 | 45 | 39 | 86.7% |
| 2009 | 59 | 58 | 98.3% |
| 2010 | 48 | 45 | 93.8% |
| 2011 | 49 | 48 | 98.0% |
| 2012 | 47 | 45 | 95.7% |
| 2013 | 62 | 59 | 95.2% |
| 2014 | 46 | 45 | 97.8% |
| 2015 | 56 | 53 | 94.6% |
| 2016 | 42 | 42 | 100.0% |
| 2017 | 44 | 43 | 97.7% |
| 2018 | 59 | 52 | 88.1% |
| 2019 | 60 | 60 | 100.0% |
| 2020 | 61 | 61 | 100.0% |
| 2021 | 12 | 12 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 690 | 2.8% | 27.1% | 46.7% | 3.5% |
| Action 2 | 111 | 1.8% | 18.0% | 33.3% | 2.7% |
| Action 3 | 18 | 5.6% | 22.2% | 50.0% | 5.6% |
| 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: 2023-08-28–2026-08-28. All years includes every dated office action in the data.
By year
1.6%
1.4%
1.9%
5.5%
1.9%
1.4%
2014: Alice
3.7%
0.0%
1.9%
3.1%
4.1%
2019: PEG
4.3%
4.6%
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.