Examiner Maria E Graber
Grant ratio: 44.6% (9th percentile in Art Unit 3644 among examiners with at least 20 applications). Average office actions per grant: 1.66. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 96439
- Primary art unit
- 3644
- Work group
- 3640
- Technology center
- 3600
- Applications
- 280
- Granted applications
- 125
- Examiner phone
- (571) 272-4640
- Supervisor
- Timothy D Collins
- Supervisor phone
- (571) 272-6886
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 33 | 68.3% | 1.55 |
| Group | 281 | 52.9% | 1.75 |
| Tech Center | 2,381 | 46.2% | 2.12 |
| 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 | 164 | 58.6% |
| 2 OAs | 85 | 30.4% |
| 3 OAs | 18 | 6.4% |
| 4 OAs | 10 | 3.6% |
| 5+ OAs | 3 | 1.1% |
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 |
|---|---|---|---|
| 2021 | 20 | 13 | 65.0% |
| 2022 | 52 | 33 | 63.5% |
| 2023 | 46 | 25 | 54.3% |
| 2024 | 71 | 37 | 52.1% |
| 2025 | 57 | 17 | 29.8% |
| 2026 | 34 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 280 | 0.0% | 6.8% | 80.7% | 8.2% |
| Action 2 | 116 | 0.0% | 8.6% | 79.3% | 7.8% |
| Action 3 | 31 | 0.0% | 3.2% | 83.9% | 12.9% |
| Action 4 | 13 | 0.0% | 0.0% | 92.3% | 7.7% |
| Action 5 | 3 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 6 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 8 | 1 | 0.0% | 0.0% | 0.0% | 100.0% |
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%
0.0%
0.0%
2024: AI examples
0.0%
2025: August memo
0.0%
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.