Prosecution Insights
Last updated: October 25, 2026

Littelfuse Semiconductor (Wuxi) Co. Ltd.

Technology area: Semiconductors, Circuits & Optics

2 pending office actions • 2 art units • 2 examiners • 0 of 2 (0%) have an AI response strategy ready • 9 patents granted in the last 365 days

Analysis

Littelfuse Semiconductor (Wuxi) Co. Ltd. has 2 pending office actions currently active in the Semiconductors, Circuits & Optics technology area. These cases are handled by 2 distinct examiners, which distributes the prosecution workload across different individuals. The matters are also located in 2 distinct art units, indicating that the company's semiconductor filings are being reviewed under different technical classifications at the USPTO.

WINTERS, SEAN AYERS is the busiest examiner for the company, with 1 pending office action currently under review. With 2 pending office actions in total, the workload is shared between the 2 distinct examiners. The involvement of 2 distinct art units suggests that the company is pursuing multiple technical paths within the semiconductor field. Practitioners must adapt to the specific preferences of two different examiners rather than focusing on a single point of contact.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Portfolio Summary

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

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.

0
Hard (0%)
2
Medium (100%)
0
Easy (0%)
0
Unknown (0%)

Rejection Statute Mix

BucketCases
§103 only1 (50%)
§102 only1 (50%)

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
2
Semiconductors
100% of docket
0
Mechanical / Eng
0% of docket
0
Business / Other
0% 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.

20 h
Manual time on pending OAs
4 h
Time saved (low, 20%)
7 h
Time saved (mid, 35%)
0.2 wks
FTE-weeks freed (mid)

Top Examiners on this docket

ExaminerApps on this docketAllow rateInterview lift
WINTERS, SEAN AYERS 1 88.7% +17.9%
BELOUSOV, ALEXANDER 1 76.6% +16.3%

Quick Wins (1)

Cases in front of an examiner with an allow rate of 80%+ where the difficulty is Easy or Medium. The top 1 ordered by deadline are shown.

App #TitleExaminerDue in
18526436 SCR STRUCTURE WITH HIGH NOISE IMMUNITY WINTERS, SEAN AYERS —

Interview Candidates (2)

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 2 ordered by deadline are shown.

App #TitleExaminerDue in
18526436 SCR STRUCTURE WITH HIGH NOISE IMMUNITY WINTERS, SEAN AYERS —
18369054 BIDIRECTIONAL ASYMMETRIC TRANSIENT VOLTAGE SUPPRESSOR DEVICE BELOUSOV, ALEXANDER —

Top Art Units

Art UnitApps
2892 1
2818 1

Pending Office Actions

App #TitleExaminerArt UnitStatutesStatusDue inAIFiled
18526436 SCR STRUCTURE WITH HIGH NOISE IMMUNITY WINTERS, SEAN AYERS 2892 §102 Non-Final OA — Pending Dec 01, 2023
18369054 BIDIRECTIONAL ASYMMETRIC TRANSIENT VOLTAGE SUPPRESSOR DEVICE BELOUSOV, ALEXANDER 2818 §103 Non-Final OA — Pending Sep 15, 2023

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Frequently Asked Questions

How many pending USPTO office actions does Littelfuse Semiconductor (Wuxi) Co. Ltd. have?

Littelfuse Semiconductor (Wuxi) Co. Ltd. has 2 pending office actions as of October 2026, spread across 2 art units and 2 examiners.

Which USPTO examiner handles the most Littelfuse Semiconductor (Wuxi) Co. Ltd. applications?

Sean Ayers Winters has the most, with 1 of Littelfuse Semiconductor (Wuxi) Co. Ltd.'s pending office actions.

What technology area are Littelfuse Semiconductor (Wuxi) Co. Ltd.'s patent applications in?

Mostly Semiconductors, Circuits & Optics (USPTO Tech Center 2800), based on where its pending office actions are examined.

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