Prosecution Insights
Last updated: October 02, 2026

Examiner: SUN, XIUQIN

Tech Center 2800 • Art Units: 2857 2862 2863

This examiner grants 72% of resolved cases

Analysis

Xiuqin Sun is a patent examiner in Tech Center 2800, specifically within Art Unit 2857. The examiner has 603 resolved cases. These cases result in an allowance rate of 72.5 percent. This 72.5 percent figure represents the frequency of applications that reach issuance. Practitioners can use this rate to understand the historical probability of success for applications assigned to this examiner.

The data includes an interview lift of 4.2 percent. This positive value indicates that applications with an interview have a higher allowance rate than those without one. Because the lift is 4.2 percent, practitioners should consider how an interview affects the prosecution strategy. This metric suggests that verbal communication is associated with an increase in the likelihood of a grant for this examiner.

The median days to allowance for this examiner is 1193. This 1193 figure marks the middle point of the time from filing to patent issuance. With 603 resolved cases, this median provides a timeline for expected prosecution duration in Tech Center 2800. These statistics allow for data-grounded planning regarding both the outcome and the timing of patent applications in Art Unit 2857.

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
639
Total Applications
+4.2%
Interview Lift
1193
Avg Prosecution Days
Based on 603 resolved cases, 2023–2026

Rejection Statute Breakdown

20.5%
§101 Eligibility
21.1%
§102 Novelty
46.4%
§103 Obviousness
9.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
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
18652390 SENSOR PERTURBATION Non-Final OA Zoox, Inc.
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
18637448 Minimum Integrated Circuit Operating Voltage Searching Method and Minimum Integrated Circuit Operating Voltage Searching System Capable of Blending Two Prediction Models Non-Final OA MEDIATEK INC.
18025871 CALCULATION DEVICE, SURFACE ROUGHNESS PREDICTION SYSTEM, AND CALCULATION METHOD Non-Final OA FANUC CORPORATION
17534629 Reliability Macros for Contact Over Active Gate Layout Designs Non-Final OA International Business Machines Corporation
18497156 SYSTEM AND METHOD FOR CONTINUOUS WELDED RAIL RISK MODELING Final Rejection BNSF Railway Company
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
17657194 INFORMATION ACQUISITION SYSTEM FOR SUBSTRATE PROCESSING APPARATUS, ARITHMETIC DEVICE, AND INFORMATION ACQUISITION METHOD FOR SUBSTRATE PROCESSING APPARATUS Final Rejection Tokyo Electron Limited
18764681 DETECTION DEVICE, DETECTION METHOD, DETECTION PROGRAM, AND DETECTION SYSTEM Non-Final OA SHIMADZU CORPORATION
17615065 OPTICAL INTERFERENCE MEASURING APPARATUS AND OPTICAL INTERFERENCE MEASURING METHOD Final Rejection RIKEN
18227859 OIL AND GAS METERING SYSTEM Final Rejection Johnson Controls Tyco IP Holdings LLP
18626809 EVALUATION AND CORRECTION OF CURRENT SENSING DEVICES Non-Final OA GM Global Technology Operations LLC
18092526 METHOD AND APPARATUS FOR MEASURING CARBON EMISSION OF DISTRICT HEATING SYSTEM, ELECTRONIC DEVICE, AND MEDIUM Non-Final OA SICHUAN ENERGY INTERNET RESEARCH INSTITUTE TSINGHUA UNIVERSITY

Facing This Examiner?

IP Author analyzes examiner patterns and generates tailored response strategies with the highest chance of allowance.

Build Your Strategy

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month