Examiner Christine M Achen Zimmerman
Grant ratio: 76.5% (8th percentile in Art Unit 2937 among examiners with at least 20 applications). Average office actions per grant: 1.00. Most common rejection type: §112.
Recently active
Last office action in data: September 2026
Examiner record
- Examiner ID
- 99109
- Primary art unit
- 2937
- Work group
- 2900-WG
- Technology center
- 2900
- Applications
- 34
- Granted applications
- 26
- Examiner phone
- (703) 756-1995
- Supervisor
- Calvin E Vansant
- Supervisor phone
- (571) 270-1433
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 11 | 91.0% | 1.08 |
| Group | 461 | 94.5% | 1.19 |
| Tech Center | 486 | 94.3% | 1.20 |
| USPTO | 16,572 | 52.1% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 0 | 0.0% |
| 1 OA | 34 | 100.0% |
| 2 OAs | 0 | 0.0% |
| 3 OAs | 0 | 0.0% |
| 4 OAs | 0 | 0.0% |
| 5+ OAs | 0 | 0.0% |
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 | 22 | 22 | 100.0% |
| 2025 | 6 | 4 | 66.7% |
| 2026 | 6 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 34 | 0.0% | 8.8% | 0.0% | 85.3% |
Section 101 rejections
Last 3 years: 2023-10-02–2026-10-02. All years includes every dated office action in the data.
By year
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 Oct. 9, 2026.