Prosecution Insights
Last updated: May 29, 2026

Examiner: CHANG, SUKWOO JAMES

Tech Center 3700 • Art Units: 1718 3647 3723

This examiner grants 56% of resolved cases

Performance Statistics

56.1%
Allow Rate
-13.9% vs TC avg
180
Total Applications
+41.3%
Interview Lift
1058
Avg Prosecution Days
Based on 107 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
8.3%
§102 Novelty
86.8%
§103 Obviousness
3.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18427486 CHEMICAL MECHANICAL POLISHING (CMP) APPARATUS Non-Final OA Samsung Electronics Co., Ltd.
18737067 SURFACE CLEANING APPARATUS Final Rejection Omachron Intellectual Property Inc.
18745122 HANDHELD HYDRAULIC POWER TOOL Non-Final OA MILWAUKEE ELECTRIC TOOL CORPORATION
18475188 POLISHING APPARATUS Final Rejection EBARA 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.
18430437 HANDHELD BLOWER APPARATUS Non-Final OA Andreas Stihl AG & Co. KG
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.
18995438 SURFACE CLEANER Non-Final OA Techtronic Floor Care Technology Limited
18215324 DEVICE BASE, WATER STORAGE DEVICE AND CLEANING ROBOT Final Rejection BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
17297221 POLISHING PADS AND SYSTEMS AND METHODS OF MAKING AND USING THE SAME Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18207346 MOBILE CLEANING ROBOT INCLUDING SCRUBBING FEATURES Final Rejection 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
18273534 AUTONOMOUS SURFACE TREATMENT APPARATUS Non-Final OA Dyson Technology Limited
18270989 AUTOMATIC CLEANING DEVICE Final Rejection Beijing Roborock Technology Co., Ltd.
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
18455650 SCRUBBER Non-Final OA SHEN ZHEN 3IROBOTIX CO., LTD.
18330893 RANDOM ORBITAL SANDING TOOL Non-Final OA X'POLE PRECISION TOOLS INC.
17987178 HAND-HELD FLOOR CLEANING MACHINE Final Rejection Hako GmbH
18186998 RATCHET WOODWORKING CLAMP WITH UNIVERSAL ADAPTIVE CLAMPING BLOCK Final Rejection Shanghai NEOCRAFT Tool Co., Ltd.
17922298 TRAY AND CLEANING APPARATUS SYSTEM Non-Final OA TINECO INTELLIGENT TECHNOLOGY CO., LTD.

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