Prosecution Insights
Last updated: October 27, 2026

Zixuan Zhou, USPTO Patent Examiner

Listed by the USPTO as ZHOU, ZIXUAN

Tech Center 2800 • Art Units: 2859

This examiner grants 76% of resolved cases

Analysis

ZHOU, ZIXUAN is assigned to Tech Center 2800 and Art Unit 2859. The record reports 631 resolved cases and an allowance rate of 76.5%. The median time to allowance is 1012 days, which should be incorporated into prosecution planning for applicants with related technology or commercial deadlines.

The interview lift is 18.1%, showing a moderate association with allowance outcomes. An interview can help isolate the examiner’s concerns, while a focused written response can preserve the resulting distinctions. The principal companies represented are LG Energy Solution Ltd., MILWAUKEE ELECTRIC TOOL Corporation, and Toyota Motor Corporation. The listed firms are BIRCH STEWART KOLASCH & BIRCH, LLP, BANNER & WITCOFF, LTD., and Billion & Armitage - Aptiv.

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

Performance Statistics

76.5%
Allow Rate
+8.5% vs TC avg
673
Total Applications
+18.1%
Interview Lift
1012
Avg Prosecution Days
Based on 631 resolved cases, 2023–2026

Rejection Statute Breakdown

2.0%
§101 Eligibility
21.6%
§102 Novelty
60.2%
§103 Obviousness
11.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18326579 POWER SUPPLY INCLUDING A CASCADED INVERTER Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18222785 MODULAR CHARGING DEVICE AND COOLING STRUCTURE THEREOF Non-Final OA Techtronic Cordless GP
18400002 TRAVELING NONCONTACT POWER SUPPLY SYSTEM Non-Final OA TOYOTA JIDOSHA KABUSHIKI KAISHA
18537080 Electric Apparatus of and Electric Method for Electric Machine Non-Final OA ABB Schweiz AG
18286047 BATTERY CHARGING APPARATUS AND BATTERY MANAGEMENT APPARATUS Non-Final OA LG ENERGY SOLUTION, LTD.
18517408 ELECTRIC WORKING MACHINE AND CHARGING SYSTEM FOR ELECTRIC WORKING MACHINE Non-Final OA KUBOTA CORPORATION
18514000 METHOD AND SYSTEM FOR CONTROLLING BATTERY OF VEHICLE, AND VEHICLE THEREOF Non-Final OA KIA CORPORATION
18397166 ALTITUDE AND ROUTE ADJUSTED TARGET STATE OF CHARGE (SOC) FOR ELECTRIC VEHICLES Non-Final OA Siemens Aktiengesellschaft
18395028 BATTERY MODULE Non-Final OA Prime Planet Energy & Solutions, Inc.
18394406 MANAGEMENT METHOD OF ELECTROCHEMICAL DEVICE, ELECTRONIC DEVICE, CHARGING DEVICE AND STORAGE MEDIUM Non-Final OA Ningde Amperex Technology Limited

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Frequently Asked Questions

What is examiner Zixuan Zhou's allowance rate?

76.5% of resolved applications examined by Zixuan Zhou were allowed (631 resolved cases), compared with 60.2% across Art Unit 2859 over the last five years.

Does an interview help with examiner Zixuan Zhou?

This examiner's interview lift is +18.1 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Zixuan Zhou take to allow a patent?

Applications allowed by Zixuan Zhou took 1,012 days on average from filing to allowance.

Which art unit does examiner Zixuan Zhou work in?

Zixuan Zhou examines applications in Art Unit 2859 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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