Examiner Lillian T Nguyen
Examiner Lillian T Nguyen appears to be easier than most of their art unit, group, tech center, and USPTO peers. Their lifetime grant ratio is 79.0%, they average 1.48 office actions per granted patent, and their rejection profile is dominated by §103 and elevated §112 usage.
Difficulty vs AU
Very Hard
Difficulty vs Group
Very Easy
Difficulty vs TC
Very Easy
Difficulty vs USPTO
Very Easy
Average OA / Grant
1.48
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Examiner Details
- Observed Examiner Years
- 16 years (2011-2026)
- Phone
- (571) 270-5404
- Predicted Supervisor
- Ernesto Suarez
- Supervisor Phone
- (571) 270-5565
- Tech Center
- 3600 - Transportation, Electronic Commerce, Construction, Agriculture, Licensing and Review
- Group
- 3650 - Material and Article Handling
Metrics
- Applications Evaluated
- 734
- Granted Applications
- 580
- Non-Granted Applications
- 154
- Avg OA / Grant
- 1.48
- Last OA Observed
- March 2026 (2 months ago)
- Work Groups Seen
Context Comparison
| Scope | Examiners | Lifetime Grant Ratio | Avg OA / Grant |
|---|---|---|---|
| This Examiner | 1 | 79.0% | 1.48 |
| Art Unit | 11 | 80.5% | 1.40 |
| Group | 239 | 60.7% | 1.70 |
| Tech Center | 2,337 | 48.0% | 2.11 |
| USPTO | 16,116 | 54.8% | 1.98 |
Grant Timeline
Shaded region marks the last two observed years, where grant outcomes may lag due to recency.
| Year | Applications | Granted | Grant Rate |
|---|---|---|---|
| No observed data before 2011; examiner may not yet have been active in the available dataset. | |||
| 2011 | 24 | 21 | 87.5% |
| 2012 | 55 | 39 | 70.9% |
| 2013 | 52 | 42 | 80.8% |
| 2014 | 52 | 45 | 86.5% |
| 2015 | 42 | 35 | 83.3% |
| 2016 | 57 | 49 | 86.0% |
| 2017 | 42 | 41 | 97.6% |
| 2018 | 61 | 58 | 95.1% |
| 2019 | 45 | 44 | 97.8% |
| 2020 | 65 | 49 | 75.4% |
| 2021 | 43 | 37 | 86.0% |
| 2022 | 32 | 25 | 78.1% |
| 2023 | 40 | 32 | 80.0% |
| 2024 | 55 | 43 | 78.2% |
| 2025 | 50 | 20 | 40.0% |
| 2026 | 19 | 0 | 0.0% |
580 family-cache-validated grants; 0 OA-only grant signals.
Rejection Timeline
| OA # | Office Actions | § 101 Percentage | § 102 Percentage | § 103 Percentage | § 112 Percentage |
|---|---|---|---|---|---|
| 1 | 734 | 0.0% | 18.3% | 47.4% | 23.4% |
| 2 | 264 | 0.0% | 22.3% | 56.8% | 15.5% |
| 3 | 79 | 0.0% | 16.5% | 72.2% | 8.9% |
| 4 | 36 | 0.0% | 11.1% | 75.0% | 13.9% |
| 5 | 12 | 0.0% | 8.3% | 75.0% | 16.7% |
| 6 | 4 | 0.0% | 50.0% | 50.0% | 0.0% |
| 7 | 2 | 0.0% | 0.0% | 100.0% | 0.0% |
| 8 | 1 | 0.0% | 0.0% | 100.0% | 0.0% |