Prosecution Insights
Last updated: August 06, 2026

Littelfuse Inc.

8 pending office actions • 7 art units • 8 examiners • 0 of 8 (0%) have an AI response strategy ready • 20 patents granted in the last 365 days

Portfolio Summary

8
Total Pending OAs
6
Non-Final OAs
2
Final Rejections
0
Advisory / Quayle

Response Deadline Pressure

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.

1
Overdue
0
Due this week
0
Due this month
0
Due in next 60 days
0
Due later

Case Difficulty Mix

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.

3
Hard (38%)
5
Medium (62%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only5 (62%)
Multi-statute (no §101)3 (38%)

Industry Mix

How the docket's pending cases split across USPTO tech-center bands.

0
Life Sciences
0% of docket
0
Information Tech
0% of docket
0
Communications
0% of docket
5
Semiconductors
62% of docket
1
Mechanical / Eng
12% of docket
2
Business / Other
25% of docket

Time-on-OA Estimate

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.

80 h
Manual time on pending OAs
16 h
Time saved (low, 20%)
28 h
Time saved (mid, 35%)
0.7 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
TRAN, NGUYEN 1 83.6% +7.6%
ABRAHAM, JOSE K 1 82.9% +34.5%
STUESSY, NOLAN GABRIEL 1
WRIGHT, TUCKER J 1 79.5% +11.1%
LAM, TUAN THIEU 1 77.6% +13.2%
ALEJNIKOV JR, ROBERT P 1 86.2% +17.1%
RALIS, STEPHEN J 1 32.5% +44.3%
NGUYEN, DONGHAI D 1 75.3% +29.2%

Quick Wins (3)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
19073148 PROTECTION AND SENSING SYSTEMS AND METHODS TRAN, NGUYEN 2d overdue
18741960 ULTRA-THIN WELDABLE FUSE ABRAHAM, JOSE K
18413169 CURRENT SENSOR WITH DIAGNOSTIC FEATURE ALEJNIKOV JR, ROBERT P

Hard Cases (3)

Multi-statute / §101-driven matters, or cases in front of an examiner with an allow rate under 30%. The top 3 ordered by deadline are shown.

App #TitleExaminerDue in
18664744 DIRECT LIQUID COOLING OF SEMICONDUCTOR DEVICES STUESSY, NOLAN GABRIEL
18602992 SHOWER NOZZLE CONFIGURATION FOR SEMICONDUCTOR WAFER DICING SAW SYSTEM WRIGHT, TUCKER J
18442322 ISOLATION DEVICE HAVING INDUCTIVE AND CAPACITIVE ISOLATION CIRCUIT LAM, TUAN THIEU

Interview Candidates (6)

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 6 ordered by deadline are shown.

App #TitleExaminerDue in
18741960 ULTRA-THIN WELDABLE FUSE ABRAHAM, JOSE K
18602992 SHOWER NOZZLE CONFIGURATION FOR SEMICONDUCTOR WAFER DICING SAW SYSTEM WRIGHT, TUCKER J
18442322 ISOLATION DEVICE HAVING INDUCTIVE AND CAPACITIVE ISOLATION CIRCUIT LAM, TUAN THIEU
18413169 CURRENT SENSOR WITH DIAGNOSTIC FEATURE ALEJNIKOV JR, ROBERT P
17679926 ELEMENT SUB-STRUCTURE RALIS, STEPHEN J
17211028 METHOD TO CONNECT POWER TERMINAL TO SUBSTRATE WITHIN SEMICONDUCTOR PACKAGE NGUYEN, DONGHAI D

Top Art Units

Art UnitApps
2838 1
2835 1
2891 1
2843 1
2857 1
3992 1
3729 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
19073148 PROTECTION AND SENSING SYSTEMS AND METHODS TRAN, NGUYEN 2838 §103 Final Rejection 2d overdue Pending Mar 07, 2025
18741960 ULTRA-THIN WELDABLE FUSE ABRAHAM, JOSE K 2835 §103 Non-Final OA Pending Jun 13, 2024
18664744 DIRECT LIQUID COOLING OF SEMICONDUCTOR DEVICES STUESSY, NOLAN GABRIEL §102§103§112 Non-Final OA Pending May 15, 2024
18602992 SHOWER NOZZLE CONFIGURATION FOR SEMICONDUCTOR WAFER DICING SAW SYSTEM WRIGHT, TUCKER J 2891 §102§103 Final Rejection Pending Mar 12, 2024
18442322 ISOLATION DEVICE HAVING INDUCTIVE AND CAPACITIVE ISOLATION CIRCUIT LAM, TUAN THIEU 2843 §102§103 Non-Final OA Pending Feb 15, 2024
18413169 CURRENT SENSOR WITH DIAGNOSTIC FEATURE ALEJNIKOV JR, ROBERT P 2857 §103 Non-Final OA Pending Jan 16, 2024
17679926 ELEMENT SUB-STRUCTURE RALIS, STEPHEN J 3992 §103 Non-Final OA Pending Feb 24, 2022
17211028 METHOD TO CONNECT POWER TERMINAL TO SUBSTRATE WITHIN SEMICONDUCTOR PACKAGE NGUYEN, DONGHAI D 3729 §103 Non-Final OA Pending Mar 24, 2021

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