Examiner Zannatul Ferdous
Grant ratio: 73.7% (13th percentile in Art Unit 2867 among examiners with at least 20 applications). Average office actions per grant: 1.62. Most common rejection type: §103.
Recently active
Last office action in data: August 2026
Examiner record
- Examiner ID
- 91795
- Primary art unit
- 2867
- Work group
- 2860
- Technology center
- 2800
- Applications
- 670
- Granted applications
- 494
- Examiner phone
- (571) 270-0399
- Supervisor
- Rodak Lee
- Supervisor phone
- (571) 270-5628
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 13 | 72.1% | 1.63 |
| Group | 131 | 67.2% | 1.82 |
| Tech Center | 2,413 | 62.4% | 1.69 |
| USPTO | 16,475 | 52.7% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 1 | 0.1% |
| 1 OA | 425 | 63.4% |
| 2 OAs | 156 | 23.3% |
| 3 OAs | 48 | 7.2% |
| 4 OAs | 19 | 2.8% |
| 5+ OAs | 21 | 3.1% |
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 |
|---|---|---|---|
| 2015 | 27 | 20 | 74.1% |
| 2016 | 46 | 41 | 89.1% |
| 2017 | 44 | 29 | 65.9% |
| 2018 | 73 | 61 | 83.6% |
| 2019 | 80 | 69 | 86.3% |
| 2020 | 36 | 31 | 86.1% |
| 2021 | 57 | 49 | 86.0% |
| 2022 | 79 | 69 | 87.3% |
| 2023 | 57 | 54 | 94.7% |
| 2024 | 45 | 41 | 91.1% |
| 2025 | 63 | 30 | 47.6% |
| 2026 | 63 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 669 | 1.8% | 16.6% | 74.6% | 4.3% |
| Action 2 | 244 | 4.9% | 8.2% | 82.8% | 2.0% |
| Action 3 | 88 | 6.8% | 4.5% | 84.1% | 2.3% |
| Action 4 | 40 | 2.5% | 7.5% | 92.5% | 0.0% |
| Action 5 | 21 | 9.5% | 0.0% | 85.7% | 4.8% |
| Action 6 | 7 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 7 | 5 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 8 | 4 | 0.0% | 0.0% | 100.0% | 0.0% |
| Action 9 | 2 | 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%
4.3%
2.0%
0.0%
3.9%
2019: PEG
0.9%
0.0%
0.0%
1.0%
5.7%
2024: AI examples
2.0%
2025: August memo
7.4%
8.9%
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.