Examiner Karen S Acker
Grant ratio: 97.0% (70th percentile in Art Unit 2921 among examiners with at least 20 applications). Average office actions per grant: 1.29. Most common rejection type: §112.
Appears inactive
Last office action in data: June 2024
Examiner record
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 23 | 95.6% | 1.25 |
| Group | 461 | 94.9% | 1.19 |
| Tech Center | 486 | 94.6% | 1.20 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 1 | 0.2% |
| 1 OA | 418 | 74.9% |
| 2 OAs | 116 | 20.8% |
| 3 OAs | 17 | 3.0% |
| 4 OAs | 5 | 0.9% |
| 5+ OAs | 1 | 0.2% |
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 |
|---|---|---|---|
| 2014 | 6 | 5 | 83.3% |
| 2015 | 46 | 44 | 95.7% |
| 2016 | 70 | 67 | 95.7% |
| 2017 | 72 | 68 | 94.4% |
| 2018 | 79 | 78 | 98.7% |
| 2019 | 108 | 106 | 98.1% |
| 2020 | 76 | 75 | 98.7% |
| 2021 | 58 | 57 | 98.3% |
| 2022 | 27 | 25 | 92.6% |
| 2023 | 10 | 10 | 100.0% |
| 2024 | 6 | 6 | 100.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 557 | 0.0% | 3.1% | 0.7% | 91.4% |
| Action 2 | 139 | 0.0% | 2.9% | 0.7% | 91.4% |
| Action 3 | 23 | 0.0% | 8.7% | 8.7% | 78.3% |
| Action 4 | 6 | 0.0% | 0.0% | 50.0% | 50.0% |
| 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
2014: Alice
0.0%
0.0%
0.0%
0.0%
0.0%
2019: PEG
0.0%
0.0%
0.0%
0.0%
0.0%
2024: AI examples
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.