Prosecution Insights
Last updated: October 02, 2026

Examiner: CAO, CHUN

Tech Center 4100 • Art Units: 1733 1758 2115 3752 3761 4100

This examiner grants 85% of resolved cases

Analysis

Chun Cao is an examiner in Tech Center 4100 and Art Unit 1733. Having managed 1046 resolved cases, the examiner maintains an allowance rate of 84.7 percent. This volume of 1046 cases and the 84.7 percent success rate for applicants define the prosecution landscape for this docket. The 1046 resolved cases provide a high degree of confidence in the observed statistical trends. The 84.7 percent allowance rate is a primary factor for applicants to consider.

The median days to allowance is 935, establishing the typical duration for cases that reach a grant. An interview lift of 12.6 percent suggests that direct communication can provide a meaningful boost to the probability of success. With an 84.7 percent allowance rate, the majority of applicants will find success, and the 935-day median offers a clear expectation for the time required. These 1046 resolved cases and the 12.6 percent interview lift together suggest a docket where both written and verbal advocacy are effective.

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

Performance Statistics

84.7%
Allow Rate
+24.7% vs TC avg
1,061
Total Applications
+12.6%
Interview Lift
935
Avg Prosecution Days
Based on 1046 resolved cases, 2023–2026

Rejection Statute Breakdown

9.9%
§101 Eligibility
35.8%
§102 Novelty
28.0%
§103 Obviousness
16.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18897598 REFRIGERATOR AND CONTROL METHOD THEREOF Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18726443 POWER CONVERSION DEVICE, RECORDING MEDIUM, AND CONTROL METHOD Non-Final OA TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION
18615052 CONTROL METHOD, INFORMATION PROCESSING APPARATUS, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM Final Rejection Panasonic Intellectual Property Corporation of America
18285429 METHOD FOR OPERATING A POWER TOOL, AND POWER TOOL Final Rejection Hilti Aktiengesellschaft
18815895 System and Method for Controlling an Operation of an Electric Grid Non-Final OA Mitsubishi Electric Research Laboratories, Inc.
18587483 METHOD FOR MATERIAL-REMOVING MACHINING OF A COMPONENT FOR A TURBOMACHINE Final Rejection MTU Aero Engines AG
18579144 METHOD FOR DIMENSIONING A RECEIVING DEVICE Final Rejection Siemens Aktiengesellschaft
18745482 IMPROVED PEAK MICROGRID LOAD DISPATCH Non-Final OA Caterpillar Inc.
18392332 CONTROLLING ENERGY LOADS TO MEET AN ENERGY BUDGET ASSIGNED TO A SITE Non-Final OA Carrier Corporation
18837251 DISCHARGE RESISTOR ARRANGEMENT FOR ENERGY STORAGE CABINETS IN AN ENERGY STORAGE SYSTEM Non-Final OA Hitachi Energy Ltd
18779521 AUTOMATED SYSTEMS AND METHODS FOR PRODUCTION OF 3D MOLDS Non-Final OA MATTHEWS INTERNATIONAL CORPORATION
18908274 METHODS AND SYSTEMS FOR EVALUATING ENERGY CONSERVATION AND GUEST SATISFACTION IN HOTELS Non-Final OA Honeywell International Inc.
18753498 ON PROCESS LOOP-BY-LOOP CONTROL STRATEGY MIGRATION FROM LEGACY CONTROL SYSTEMS TO MODERN CONTROL SYSTEMS Non-Final OA Honeywell International Inc.
17980377 SYSTEMS AND METHODS FOR CONFIGURING FAN SPEEDS Final Rejection ATI Technologies ULC
18511259 METHOD FOR OPTIMIZING LABORATORY SYSTEM Non-Final OA Roche Molecular Systems, Inc.
18922224 METHODS AND SYSTEMS FOR QUALITY INFERENCE AND CONTROL FOR ADDITIVE MANUFACTURING PROCESSES Non-Final OA DIVERGENT TECHNOLOGIES, INC.

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