Prosecution Insights
Last updated: October 27, 2026

Xuan Ly, USPTO Patent Examiner

Listed by the USPTO as LY, XUAN

Tech Center 2800 • Art Units: 2836

This examiner grants 86% of resolved cases

Analysis

LY, XUAN works in tech center 2800 and art unit 2836. The profile covers 550 resolved cases, with an 85.5% allowance rate. The median time to allowance is 939 days. Interviews are associated with a 6.5% lift in the allowance outcome.

The recorded allowance rate is high across a substantial case volume, while the interview measure is modest. That combination supports emphasizing strong initial claim presentation and written responses, with interviews serving as a secondary tool. The principal companies are Huawei Technologies Co., Ltd., Andreas Stihl AG & Co. KG, and Contemporary Amperex Technology Co., Limited.

The principal firms are CROWELL & MORING LLP, FisherBroyles, LLP - MAIN CN, and HAMILTON, BROOK, SMITH & REYNOLDS, P.C. They provide the recurring counsel context.

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

Performance Statistics

85.5%
Allow Rate
+17.5% vs TC avg
576
Total Applications
+6.5%
Interview Lift
939
Avg Prosecution Days
Based on 550 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
23.1%
§102 Novelty
69.5%
§103 Obviousness
5.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18829392 POWER CONVERTER ARRANGEMENT WITH PARTIAL POWER CONVERSION Non-Final OA Huawei Digital Power Technologies Co., Ltd.
18675269 Manually Operated, Motor-Driven Working Device With Motor Control Circuit Non-Final OA Andreas Stihl AG & Co. KG
19332948 ENERGY STORAGE VALVE SUBMODULE, ENERGY STORAGE VALVE, AND ENERGY STORAGE STATION Non-Final OA CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
19348475 DEVICE, METHOD, APPARATUS AND MEDIUN FOR SHORT-CIRCUIT DETECTION OF A SWITCHING DEVICE AND AN UNINTERRUPTIBLE POWER SUPPLY Non-Final OA Vertiv Corporation
19108401 DC VOLTAGE SWITCHING DEVICE WITH INTEGRATED INTERRUPTION MECHANISM Non-Final OA Phoenix Contact GmbH & Co. KG

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Frequently Asked Questions

What is examiner Xuan Ly's allowance rate?

85.5% of resolved applications examined by Xuan Ly were allowed (550 resolved cases), compared with 66.2% across Art Unit 2836 over the last five years.

Does an interview help with examiner Xuan Ly?

This examiner's interview lift is +6.5 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Xuan Ly take to allow a patent?

Applications allowed by Xuan Ly took 939 days on average from filing to allowance.

Which art unit does examiner Xuan Ly work in?

Xuan Ly examines applications in Art Unit 2836 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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