Prosecution Insights
Last updated: October 27, 2026

Tszfung Jackie Chan, USPTO Patent Examiner

Listed by the USPTO as CHAN, TSZFUNG JACKIE

Tech Center 2800 • Art Units: 2832 2837

This examiner grants 76% of resolved cases

Analysis

CHAN, TSZFUNG JACKIE has 891 resolved cases, an allowance rate of 75.6%, and a median of 1134 days to allowance. The examiner is in Tech Center 2800 and art unit 2832. The 18.7% interview lift is a positive measured factor that may support an interview when the prosecution issues are well defined.

The listed companies are TDK Corporation, ABB Schweiz AG, and Intel Corporation. OLIFF PLC, Cherson Feldenkrais IP Law Firm LLP, and CHIP LAW GROUP are the leading listed firms. The profile offers practitioners a basis for combining structured interview preparation with attention to the longer median path to allowance.

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

Performance Statistics

75.6%
Allow Rate
+7.6% vs TC avg
927
Total Applications
+18.7%
Interview Lift
1134
Avg Prosecution Days
Based on 891 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
15.2%
§102 Novelty
55.9%
§103 Obviousness
25.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18304152 INDUCTIVE DEVICES AND ASSOCIATED METHODS FOR IMPROVED OVERCURRENT PERFORMANCE Non-Final OA ABB Schweiz AG
17482804 IN-BUILT MAGNETIC INDUCTOR SCHEMES FOR GLASS CORE SUBSTRATES Non-Final OA Intel Corporation
18743760 MULTILAYER COIL COMPONENT Non-Final OA TDK Corporation
18334702 COIL DEVICE Non-Final OA TDK CORPORATION
18319541 COIL DEVICE AND METHOD FOR MANUFACTURING THE SAME Non-Final OA TDK CORPORATION
17970182 ELECTRONIC COMPONENT Final Rejection TDK CORPORATION
17583681 MULTILAYER ELECTRONIC COMPONENT Non-Final OA TDK CORPORATION
18248891 COMPACT COUPLED INDUCTOR Non-Final OA TDK Electronics AG
18316737 COIL DEVICE Non-Final OA Mitsubishi Electric Corporation
18035614 EMBEDDED MAGNETIC COMPONENT DEVICE INCLUDING VENTED CHANNEL AND MULTILAYER WINDINGS Non-Final OA Murata Manufacturing Co., Ltd.
18299830 POWER MODULE WITH FLAT COPPER WINDING Non-Final OA TEXAS INSTRUMENTS INCORPORATED
17994943 MAGNETIC COMPONENT FOR GALVANICALLY ISOLATED LCL-T RESONANT CONVERTER Final Rejection Delta Electronics, Inc.
18310763 ACTIVELY COOLED INDUCTOR Non-Final OA FORD GLOBAL TECHNOLOGIES, LLC
17991179 COIL COMPONENT Non-Final OA SAMSUNG ELECTRO-MECHANICS CO., LTD.
18313714 SYSTEMS AND METHODS FOR MULTIPLE-OUTPUT ISOLATED POWER SUPPLY FOR GATE-DRIVER CIRCUIT Non-Final OA BorgWarner US Technologies LLC

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Frequently Asked Questions

What is examiner Tszfung Jackie Chan's allowance rate?

75.6% of resolved applications examined by Tszfung Jackie Chan were allowed (891 resolved cases), compared with 65.0% across Art Unit 2832 over the last five years.

Does an interview help with examiner Tszfung Jackie Chan?

This examiner's interview lift is +18.7 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Tszfung Jackie Chan take to allow a patent?

Applications allowed by Tszfung Jackie Chan took 1,134 days on average from filing to allowance.

Which art unit does examiner Tszfung Jackie Chan work in?

Tszfung Jackie Chan examines applications in Art Unit 2832 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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