Technology area: Semiconductors, Circuits & Optics
7 pending office actions • 4 art units • 6 examiners • 0 of 7 (0%) have an AI response strategy ready • 20 patents granted in the last 365 days
Littelfuse Inc. has 7 pending office actions in Semiconductors, Circuits & Optics. The matters involve 6 distinct examiners and 4 distinct art units, showing concentration across both examination personnel and technical groups.
SUL, STEPHEN SANGJIN is the busiest examiner, with 2 pending matters. The repeated examiner assignment may support comparison of claim treatment and response positions, while the multiple art-unit assignments require attention to differing technical contexts.
Based on the USPTO statutory response window for each pending office action. 1 of the docket's apps have a known mailing date; the rest are excluded from the tile counts.
Difficulty is derived from the rejection statutes on the most recent pending office action. §101-driven and multi-statute cases are graded Hard; §112-only and obviousness-type double-patenting cases are graded Easy; everything else is Medium. "Unknown" means we have not yet parsed a statute for that office action.
| Bucket | Cases |
|---|---|
| §103 only | 2 (29%) |
| §102 only | 1 (14%) |
| Multi-statute (no §101) | 4 (57%) |
How the docket's pending cases split across USPTO tech-center bands.
Manual office-action response work runs about 10 hours per case. The time-saved bands below show what IP Author's prosecution pipeline typically delivers — a conservative 20% on the low end, 35% in the middle, 50% on the high end.
| Examiner | Apps on this docket | Allow rate | Interview lift |
|---|---|---|---|
| SUL, STEPHEN SANGJIN | 2 | 80.5% | +26.1% |
| TRAN, NGUYEN | 1 | 83.6% | +7.6% |
| THOMAS, LUCY M | 1 | 62.4% | +17.9% |
| AL-TAWEEL, MUAAMAR QAHTAN | 1 | 78.6% | +23.2% |
| ROJAS, BERNARD | 1 | 82.9% | +8.0% |
| KEBEDE, BROOK | 1 | 88.9% | +4.5% |
Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 2 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 19073148 | PROTECTION AND SENSING SYSTEMS AND METHODS | TRAN, NGUYEN | 2d overdue |
| 18429723 | METAL CONNECTOR IN SEMICONDUCTOR DEVICE PACKAGE | KEBEDE, BROOK | — |
Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 4 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 19034013 | MULTI-CHANNEL TRIGGER SENSOR FOR PYROTECHNIC FUSES | THOMAS, LUCY M | — |
| 18939638 | FUSE WITH CAST ARC SUPPRESSING MATERIALS FOR IMPROVED BREAKING CAPACITY | SUL, STEPHEN SANGJIN | — |
| 18930138 | CHIP FUSE WITH FLOATING LEADS | SUL, STEPHEN SANGJIN | — |
| 18584666 | HIGH CURRENT DISCONNECT MODULE | ROJAS, BERNARD | — |
Cases in front of an examiner whose interview lift is 10 percentage points or more — i.e. interviewed cases historically resolve more favorably than non-interviewed ones. The top 4 ordered by deadline are shown.
| App # | Title | Examiner | Due in |
|---|---|---|---|
| 19034013 | MULTI-CHANNEL TRIGGER SENSOR FOR PYROTECHNIC FUSES | THOMAS, LUCY M | — |
| 18954952 | RAPID REACTION PTC CIRCUIT PROTECTION DEVICE | AL-TAWEEL, MUAAMAR QAHTAN | — |
| 18939638 | FUSE WITH CAST ARC SUPPRESSING MATERIALS FOR IMPROVED BREAKING CAPACITY | SUL, STEPHEN SANGJIN | — |
| 18930138 | CHIP FUSE WITH FLOATING LEADS | SUL, STEPHEN SANGJIN | — |
| Art Unit | Apps |
|---|---|
| 2838 | 3 |
| 2841 | 2 |
| 2837 | 1 |
| 2818 | 1 |
| App # | Title | Examiner | Art Unit | Statutes | Status | Due in | AI | Filed |
|---|---|---|---|---|---|---|---|---|
| 19073148 | PROTECTION AND SENSING SYSTEMS AND METHODS | TRAN, NGUYEN | 2838 | §103 | Final Rejection | 2d overdue | Pending | Mar 07, 2025 |
| 19034013 | MULTI-CHANNEL TRIGGER SENSOR FOR PYROTECHNIC FUSES | THOMAS, LUCY M | 2838 | §102§103§112 | Non-Final OA | — | Pending | Jan 22, 2025 |
| 18954952 | RAPID REACTION PTC CIRCUIT PROTECTION DEVICE | AL-TAWEEL, MUAAMAR QAHTAN | 2838 | §103 | Non-Final OA | — | Pending | Nov 21, 2024 |
| 18939638 | FUSE WITH CAST ARC SUPPRESSING MATERIALS FOR IMPROVED BREAKING CAPACITY | SUL, STEPHEN SANGJIN | 2841 | §102§103 | Non-Final OA | — | Pending | Nov 07, 2024 |
| 18930138 | CHIP FUSE WITH FLOATING LEADS | SUL, STEPHEN SANGJIN | 2841 | §102§103 | Non-Final OA | — | Pending | Oct 29, 2024 |
| 18584666 | HIGH CURRENT DISCONNECT MODULE | ROJAS, BERNARD | 2837 | §102§103 | Final Rejection | — | Pending | Feb 22, 2024 |
| 18429723 | METAL CONNECTOR IN SEMICONDUCTOR DEVICE PACKAGE | KEBEDE, BROOK | 2818 | §102 | Non-Final OA | — | Pending | Feb 01, 2024 |
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Start Free TrialLittelfuse Inc. has 7 pending office actions as of October 2026, spread across 4 art units and 6 examiners.
Stephen Sangjin Sul has the most, with 2 of Littelfuse Inc.'s pending office actions.
Mostly Semiconductors, Circuits & Optics (USPTO Tech Center 2800), based on where its pending office actions are examined.
