Examiner William E Mossbrook
Grant ratio: 8.3% (18th percentile in Art Unit 3794 among examiners with at least 20 applications). Average office actions per grant: 1.29. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 99882
- Primary art unit
- 3794
- Work group
- 3790
- Technology center
- 3700
- Applications
- 84
- Granted applications
- 7
- Examiner phone
- (703) 756-1936
- Supervisor
- Linda Dvorak
- Supervisor phone
- (571) 272-4764
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 48 | 39.8% | 2.24 |
| Group | 334 | 38.9% | 2.25 |
| Tech Center | 2,671 | 48.4% | 2.01 |
| 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 | 30 | 35.7% |
| 2 OAs | 24 | 28.6% |
| 3 OAs | 14 | 16.7% |
| 4 OAs | 12 | 14.3% |
| 5+ OAs | 4 | 4.8% |
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 |
|---|---|---|---|
| 2024 | 1 | 0 | 0.0% |
| 2025 | 32 | 7 | 21.9% |
| 2026 | 51 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 84 | 2.4% | 2.4% | 89.3% | 0.0% |
| Action 2 | 54 | 0.0% | 3.7% | 88.9% | 1.9% |
| Action 3 | 30 | 0.0% | 6.7% | 93.3% | 3.3% |
| Action 4 | 16 | 6.3% | 0.0% | 81.3% | 6.3% |
| Action 5 | 4 | 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
2024: AI examples
13.3%
2025: August memo
0.0%
1.5%
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.