Prosecution Insights
Last updated: April 19, 2026

Examiner: CHANG, SUKWOO JAMES

Tech Center 3700 • Art Units: 1718 3647 3723

This examiner grants 57% of resolved cases

Performance Statistics

56.7%
Allow Rate
-13.3% vs TC avg
178
Total Applications
+41.0%
Interview Lift
1000
Avg Prosecution Days
Based on 104 resolved cases, 2023–2026

Rejection Statute Breakdown

2.2%
§101 Eligibility
18.5%
§102 Novelty
53.3%
§103 Obviousness
22.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18427486 CHEMICAL MECHANICAL POLISHING (CMP) APPARATUS Non-Final OA Samsung Electronics Co., Ltd.
18745122 HANDHELD HYDRAULIC POWER TOOL Non-Final OA MILWAUKEE ELECTRIC TOOL CORPORATION
18237263 POLISHING HEAD SYSTEM AND POLISHING METHOD Non-Final OA EBARA CORPORATION
18323658 APPARATUS FOR POLISHING AND METHOD OF POLISHING Final Rejection EBARA CORPORATION
18075439 SUBSTRATE CLEANING DEVICE AND SUBSTRATE POLISHING DEVICE Final Rejection EBARA CORPORATION
18417304 APPARATUS AND METHOD FOR CMP TEMPERATURE CONTROL Final Rejection Applied Materials, Inc.
18480060 ADVANCED POLISHING PADS AND RELATED POLISHING PAD MANUFACTURING METHODS Non-Final OA Applied Materials, Inc.
17297221 POLISHING PADS AND SYSTEMS AND METHODS OF MAKING AND USING THE SAME Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18392548 ACTUATOR, TILT CONTROL DEVICE, POSITIONING DEVICE, PROCESSING APPARATUS, AND DEVICE MANUFACTURING METHOD Non-Final OA SUMITOMO HEAVY INDUSTRIES, LTD.
18385626 HAMMER BIT Non-Final OA Snap-on Incorporated
17985707 MULTI-SPEED GEAR TRAIN FOR POWER TOOL Non-Final OA Snap-on Incorporated
17952575 BOARDING SWEEPER Non-Final OA HONDA MOTOR CO., LTD.
18682776 BASE STATION AND CLEANING ROBOT SYSTEM Non-Final OA Beijing Roborock Technology Co., Ltd.
18276814 AUTOMATIC CLEANING APPARATUS Final Rejection BEIJING ROBOROCK TECHNOLOGY CO., LTD.
18270989 AUTOMATIC CLEANING DEVICE Final Rejection Beijing Roborock Technology Co., Ltd.
18359180 Novel CMP Pad Design and Method of Using the Same Final Rejection Taiwan Semiconductor Manufacturing Co., Ltd.
18820382 MOBILE CLEANING ROBOT WITH ADJUSTABLE SUSPENSION Non-Final OA iRobot Corporation
17994486 MOBILE CLEANING ROBOT WITH A SPACER Final Rejection iRobot Corporation
17535905 MOBILE ROBOT OPERATION CONTROL METHOD BASED ON FLOOR ENVIRONMENT SENSING AND APPARATUS THEREFOR Non-Final OA Miele & Cie. KG
17900672 DOCKING STATION, CLEANING DEVICE, AND CLEANING SYSTEM Final Rejection Dreame Innovation Technology (Suzhou) Co., Ltd.
18363939 WORKPIECE PROCESSING METHOD Non-Final OA DISCO CORPORATION
18430437 HANDHELD BLOWER APPARATUS Non-Final OA Andreas Stihl AG & Co. KG
17838201 MOPPING MECHANISM AND CLEANING DEVICE Final Rejection Qfeeltech (Beijing) Co., Ltd.
18407838 HANDHELD CLEANING TOOL Non-Final OA Unger Marketing International, LLC
18579837 WIRE SAW ABNORMALITY DIAGNOSIS DEVICE AND METHOD Non-Final OA KOMATSU NTC LTD.
18573009 HAND-HELD CO-EXTRUDED FINISHING SANDING BLOCK Non-Final OA Trade Associates, Inc.
18570639 DYNAMIC COLLECTION DEVICE FOR OIL FILM AND TEMPERATURE DISTRIBUTION IN GRINDING ZONE AND OPERATING METHOD THEREOF Non-Final OA QINGDAO UNIVERSITY OF TECHNOLOGY
18529976 SYSTEM AND METHOD FOR LIFTING AND ORIENTING A CHAMBER Non-Final OA FUJIFILM BIOSCIENCES INC.
17650678 SYSTEM AND METHOD OF SEMI-AUTONOMOUS CLEANING OF SURFACES Non-Final OA Avidbots Corp
18455650 SCRUBBER Final Rejection SHEN ZHEN 3IROBOTIX CO., LTD.

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