Examiner Weihua Fan
Grant ratio: 70.2% (56th percentile in Art Unit 1663 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: September 2026
Examiner record
- Examiner ID
- 91793
- Primary art unit
- 1663
- Work group
- 1660
- Technology center
- 1600
- Applications
- 689
- Granted applications
- 484
- Examiner phone
- (571) 270-0398
- Supervisor
- Amjad A Abraham
- Supervisor phone
- (571) 270-7058
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| Group | Examiners | Average grant ratio | Average office actions / grant |
|---|---|---|---|
| Art Unit | 25 | 52.2% | 1.49 |
| Group | 57 | 59.1% | 1.46 |
| Tech Center | 1,380 | 37.5% | 2.02 |
| USPTO | 16,572 | 52.1% | 1.98 |
Office actions per application
| Office actions | Applications | Share of applications |
|---|---|---|
| No OA observed | 5 | 0.7% |
| 1 OA | 450 | 65.3% |
| 2 OAs | 139 | 20.2% |
| 3 OAs | 52 | 7.5% |
| 4 OAs | 22 | 3.2% |
| 5+ OAs | 21 | 3.0% |
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 |
|---|---|---|---|
| 2014 | 1 | 1 | 100.0% |
| 2015 | 31 | 23 | 74.2% |
| 2016 | 37 | 30 | 81.1% |
| 2017 | 48 | 37 | 77.1% |
| 2018 | 53 | 42 | 79.2% |
| 2019 | 77 | 68 | 88.3% |
| 2020 | 31 | 28 | 90.3% |
| 2021 | 88 | 78 | 88.6% |
| 2022 | 52 | 44 | 84.6% |
| 2023 | 64 | 51 | 79.7% |
| 2024 | 80 | 64 | 80.0% |
| 2025 | 71 | 18 | 25.4% |
| 2026 | 56 | 0 | 0.0% |
Rejections by office-action stage
| Office-action stage | Actions observed | §101 | §102 | §103 | §112 |
|---|---|---|---|---|---|
| Action 1 | 684 | 0.3% | 13.2% | 24.7% | 34.9% |
| Action 2 | 234 | 1.7% | 6.8% | 43.2% | 20.5% |
| Action 3 | 95 | 1.1% | 4.2% | 54.7% | 21.1% |
| Action 4 | 43 | 0.0% | 2.3% | 51.2% | 18.6% |
| Action 5 | 21 | 0.0% | 4.8% | 61.9% | 9.5% |
| Action 6 | 11 | 0.0% | 0.0% | 81.8% | 0.0% |
| Action 7 | 6 | 0.0% | 0.0% | 83.3% | 0.0% |
| Action 8 | 2 | 0.0% | 0.0% | 50.0% | 0.0% |
| Action 9 | 2 | 0.0% | 0.0% | 50.0% | 0.0% |
| Action 10 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |
Section 101 rejections
Last 3 years: 2023-10-02–2026-10-02. All years includes every dated office action in the data.
By year
0.0%
2014: Alice
0.0%
3.4%
0.0%
0.9%
0.0%
2019: PEG
0.0%
4.8%
0.0%
1.1%
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 Oct. 9, 2026.