Examiner David R Byrnes
Grant ratio: 54.5% (36th percentile in Art Unit 1662 among examiners with at least 20 applications). Average office actions per grant: 1.72. Most common rejection type: §112.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 95390
- Primary art unit
- 1662
- Work group
- 1660
- Technology center
- 1600
- Applications
- 277
- Granted applications
- 151
- Examiner phone
- (571) 270-3935
- Supervisor
- Joe Zhou
- Supervisor phone
- (571) 272-0724
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 20 | 50.6% | 1.65 |
| Group | 57 | 59.4% | 1.46 |
| Tech Center | 1,373 | 38.0% | 2.02 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 2 | 0.7% |
| 1 OA | 143 | 51.6% |
| 2 OAs | 68 | 24.5% |
| 3 OAs | 26 | 9.4% |
| 4 OAs | 18 | 6.5% |
| 5+ OAs | 20 | 7.2% |
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 |
|---|---|---|---|
| 2020 | 2 | 0 | 0.0% |
| 2021 | 43 | 36 | 83.7% |
| 2022 | 43 | 34 | 79.1% |
| 2023 | 46 | 41 | 89.1% |
| 2024 | 43 | 30 | 69.8% |
| 2025 | 55 | 10 | 18.2% |
| 2026 | 45 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 275 | 1.8% | 21.1% | 20.7% | 40.7% |
| Action 2 | 132 | 0.0% | 14.4% | 35.6% | 43.2% |
| Action 3 | 64 | 0.0% | 17.2% | 51.6% | 26.6% |
| Action 4 | 38 | 0.0% | 15.8% | 47.4% | 31.6% |
| Action 5 | 20 | 0.0% | 0.0% | 50.0% | 35.0% |
| Action 6 | 12 | 0.0% | 0.0% | 41.7% | 41.7% |
| Action 7 | 7 | 0.0% | 14.3% | 28.6% | 28.6% |
| Action 8 | 3 | 0.0% | 33.3% | 33.3% | 33.3% |
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%
0.0%
2.2%
1.1%
2024: AI examples
0.0%
2025: August memo
0.9%
2.0%
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.