Prosecution Insights
Last updated: October 26, 2026

Xiuqin Sun, USPTO Patent Examiner

Listed by the USPTO as SUN, XIUQIN

Tech Center 2800 • Art Units: 2857 2862 2863

This examiner grants 72% of resolved cases

Analysis

Sun, Xiuqin is assigned to Tech Center 2800 and Art Unit 2857. The record includes 603 resolved cases and a 72.5% allowance rate. This case volume provides practitioners with a meaningful basis for planning prosecution and evaluating how much claim refinement may be needed.

The interview lift is 4.2%, indicating a limited positive association between interviews and allowance outcomes in the reported data. The median time to allowance is 1193 days. The listed companies are Kia, Samsung Electronics, and Schlumberger Technology. The listed firms include Morgan Lewis, Bayramoglu Law Offices, and Brooks Kushman. Written submissions remain central to the prosecution strategy reflected here.

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

Performance Statistics

72.5%
Allow Rate
+4.5% vs TC avg
649
Total Applications
+4.2%
Interview Lift
1193
Avg Prosecution Days
Based on 603 resolved cases, 2023–2026

Rejection Statute Breakdown

20.5%
§101 Eligibility
21.2%
§102 Novelty
46.1%
§103 Obviousness
9.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18766999 METHOD AND APPARATUS WITH BATTERY INTERMITTENT SHORT DETECTION Non-Final OA Samsung Electronics Co., Ltd.
17261785 OPTIMIZED MULTI-STAGE INTERMITTENT FUGITIVE EMISSION DETECTION Final Rejection SCHLUMBERGER TECHNOLOGY CORPORATION
18399847 METHODS FOR DETERMINING THE CYCLOSTATIONNARITY OF A VIBRATION SIGNAL RELATING TO A MECHANICAL SYSTEM, FOR ARRANGING VIBRATION SENSORS FOR MONITORING SUCH A SYSTEM, AND FOR MONITORING IT Non-Final OA AIRBUS HELICOPTERS
18200279 Systems and Methods for Monitoring Water Usage in a Structure Non-Final OA STATE FARM MUTUAL AUTOMOBILE INSURANCE COMPANY
18441394 METHOD AND APPARATUS FOR CONTROLLING POWER OF AUXILIARY BATTERY FOR USING EXTERNAL ELECTRIC EQUIPMENT Non-Final OA Kia Corporation
18520893 METHOD AND SYSTEM FOR DETECTING BUSH Final Rejection KIA CORPORATION
18863664 NOISE ANALYSIS APPARATUS, NOISE ANALYSIS METHOD, AND PROGRAM FOR STIMULATING NOISE FROM SEMICONDUCTOR DEVICE SWITCHING Final Rejection Mitsubishi Electric Corporation
18372045 METHODS AND SYSTEMS FOR MANAGING AGRICULTURAL ACTIVITIES Non-Final OA CLIMATE LLC
18497156 SYSTEM AND METHOD FOR CONTINUOUS WELDED RAIL RISK MODELING Final Rejection BNSF Railway Company
18025871 CALCULATION DEVICE, SURFACE ROUGHNESS PREDICTION SYSTEM, AND CALCULATION METHOD Non-Final OA FANUC CORPORATION
18765793 MATERIAL FAILURE DETECTION FOR AIRCRAFT ENGINES USING NEUROMORPHIC SENSORS Non-Final OA RTX Corporation
18124401 INDIRECT PLASMA HEALTH MONITORING Final Rejection Applied Materials, Inc.
18513904 METHOD AND DEVICE FOR FAULT DIAGNOSIS OF A SLIDING BEARING IN ROTATING MACHINERY Final Rejection Aktiebolaget SKF
18764681 DETECTION DEVICE, DETECTION METHOD, DETECTION PROGRAM, AND DETECTION SYSTEM Non-Final OA SHIMADZU CORPORATION

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Frequently Asked Questions

What is examiner Xiuqin Sun's allowance rate?

72.5% of resolved applications examined by Xiuqin Sun were allowed (603 resolved cases), compared with 72.0% across Art Unit 2857 over the last five years.

Does an interview help with examiner Xiuqin Sun?

This examiner's interview lift is +4.2 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Xiuqin Sun take to allow a patent?

Applications allowed by Xiuqin Sun took 1,193 days on average from filing to allowance.

Which art unit does examiner Xiuqin Sun work in?

Xiuqin Sun examines applications in Art Unit 2857 in Tech Center 2800 (Semiconductors, Circuits & Optics).

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