Prosecution Insights
Last updated: October 26, 2026

Wei Chan, USPTO Patent Examiner

Listed by the USPTO as CHAN, WEI

Tech Center 3700 • Art Units: 2844 2845 2897 3752

This examiner grants 75% of resolved cases

Analysis

CHAN, WEI has 597 resolved cases, with a 74.7% allowance rate and a median of 790 days to allowance. The profile is assigned to Tech Center 3700 and art unit 2844. The 13.8% interview lift indicates a positive measured relationship in the available prosecution record.

The listed companies are Panasonic Holdings Corporation, Samsung Electronics Co., Ltd., and Stanley Electric Co., Ltd. Rimon PC - Panasonic Corporation, ARENTFOX SCHIFF LLP, and CKC & Partners Co., LLC are the listed firms with the most representation. Counsel handling electronics or lighting matters can use these relationships to identify comparable approaches.

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

Performance Statistics

74.7%
Allow Rate
+4.7% vs TC avg
628
Total Applications
+13.8%
Interview Lift
790
Avg Prosecution Days
Based on 597 resolved cases, 2023–2026

Rejection Statute Breakdown

1.7%
§101 Eligibility
4.8%
§102 Novelty
71.9%
§103 Obviousness
12.9%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19302856 ANTENNA STRUCTURE AND ELECTRONIC DEVICE COMPRISING SAME Non-Final OA Samsung Electronics Co., Ltd.
19101457 LIGHTING CONTROL SYSTEM, TERMINAL DEVICE, LIGHTING CONTROL METHOD, AND RECORDING MEDIUM Non-Final OA Panasonic Intellectual Property Management Co., Ltd.
18835873 ILLUMINATION SYSTEM Final Rejection Panasonic Intellectual Property Management Co., Ltd.
18465170 VEHICLE LIGHTING DEVICE Non-Final OA HONDA MOTOR CO., LTD.
19102604 PLASMA-EXPOSED PARTS COMPRISING AN ETCH-RESISTANT MATERIAL Non-Final OA Lam Research Corporation
18694949 EDGE CAPACITIVELY COUPLED PLASMA CHAMBER STRUCTURE Non-Final OA Lam Research Corporation
19115296 SMPS SERIES REGULATOR WITH ENERGY RECYCLE BACK TO THE SOURCE Non-Final OA SIGNIFY HOLDING B.V.
18851956 ANTENNA ELEMENT, ANTENNA SUBSTRATE, AND ANTENNA MODULE Non-Final OA KYOCERA Corporation
19202936 SYSTEMS AND METHODS FOR PROVIDING POWER AND DATA TO DEVICES Non-Final OA Hunter Industries, Inc.

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Frequently Asked Questions

What is examiner Wei Chan's allowance rate?

74.7% of resolved applications examined by Wei Chan were allowed (597 resolved cases), compared with 72.3% across Art Unit 2844 over the last five years.

Does an interview help with examiner Wei Chan?

This examiner's interview lift is +13.8 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Wei Chan take to allow a patent?

Applications allowed by Wei Chan took 790 days on average from filing to allowance.

Which art unit does examiner Wei Chan work in?

Wei Chan examines applications in Art Unit 2844 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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