Prosecution Insights
Last updated: October 26, 2026

Qingzhang Zhou, USPTO Patent Examiner

Listed by the USPTO as ZHOU, QINGZHANG

Tech Center 3700 • Art Units: 3752

This examiner grants 67% of resolved cases

Analysis

ZHOU, QINGZHANG works in Tech Center 3700 and Art Unit 3752. The record reports 854 resolved cases and an allowance rate of 67.3%. The median time to allowance is 1184 days, so prosecution before this examiner may require careful timing management and realistic expectations about the path to disposition.

The interview lift is 24.4%, indicating a meaningful association with allowance outcomes. An interview may be especially useful for clarifying claim construction and focusing the response, although the applicant still needs a well-supported written record. The represented companies include Kohler Co., RAIN BIRD Corporation, and 3M Innovative Properties Company. The listed firms are FOLEY & LARDNER LLP, FITCH EVEN TABIN & FLANNERY, LLP, and COATS & BENNETT, PLLC.

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

Performance Statistics

67.3%
Allow Rate
-2.7% vs TC avg
900
Total Applications
+24.4%
Interview Lift
1184
Avg Prosecution Days
Based on 854 resolved cases, 2023–2026

Rejection Statute Breakdown

0.8%
§101 Eligibility
23.6%
§102 Novelty
49.9%
§103 Obviousness
22.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18391072 SPRAYGUN WITH BUILT-IN QUICK-FIT CONNECTOR Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18557479 DROPLET APPLICATOR AND METHOD FOR GENERATING MOLTEN METAL DROPLETS Final Rejection Robert Bosch GmbH
18159001 NOZZLE TIP COVER FOR URETHANE ROBOTS Final Rejection TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
18546889 Nozzle System for Cleaning a Vehicle Part, In Particular a Window of a Motor Vehicle, and Cleaning Method Final Rejection Bayerische Motoren Werke Aktiengesellschaft
18587987 GLUING NOZZLE AND GLUING DEVICE Final Rejection CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
18808979 ENERGY STORAGE DEVICE WITH FIRE EXTINGUISHING FUNCTION Final Rejection Samsung SDI Co., Ltd.
19136691 Vision Based System and Methods for Targeted Spray Actuation Non-Final OA Precision Planting LLC
18604838 FUEL INJECTOR FOR GASEOUS FUEL AND VALVE ASSEMBLY FOR THE SAME Final Rejection Cummins Inc.
18661014 CONTROLLED SYSTEM AND METHODS FOR STORAGE FIRE PROTECTION Non-Final OA Tyco Fire Products LP
18837934 PIEZO ACTUATOR DEVICE, PREFERABLY WITH TRANSVERSELY DEFLECTABLE NOZZLE Final Rejection Dürr Systems AG
18970814 FLUID SUPPLY DEVICE Final Rejection EBARA CORPORATION
18070838 JET REGULATOR FOR A SANITARY FAUCET AND SANITARY FAUCET HAVING SUCH A JET REGULATOR Final Rejection Grohe AG
19130923 Impulse sprinkler with system for adjusting the range angle as well as the adjustment method thereof Non-Final OA Komet Austria GmbH
18905454 Additive Applicator System Non-Final OA AGCO Corporation

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Frequently Asked Questions

What is examiner Qingzhang Zhou's allowance rate?

67.3% of resolved applications examined by Qingzhang Zhou were allowed (854 resolved cases), compared with 48.7% across Art Unit 3752 over the last five years.

Does an interview help with examiner Qingzhang Zhou?

This examiner's interview lift is +24.4 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

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

Applications allowed by Qingzhang Zhou took 1,184 days on average from filing to allowance.

Which art unit does examiner Qingzhang Zhou work in?

Qingzhang Zhou examines applications in Art Unit 3752 in Tech Center 3700 (Medical Devices & Mechanical Engineering).

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