Prosecution Insights
Last updated: August 18, 2026

Examiner: CHANG, SUKWOO JAMES

Tech Center 3700 • Art Units: 1718 3647 3723 3745 3799

This examiner grants 57% of resolved cases

Performance Statistics

56.9%
Allow Rate
-13.1% vs TC avg
188
Total Applications
+40.8%
Interview Lift
1057
Avg Prosecution Days
Based on 109 resolved cases, 2023–2026

Rejection Statute Breakdown

1.6%
§101 Eligibility
18.8%
§102 Novelty
54.5%
§103 Obviousness
22.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18745122 HANDHELD HYDRAULIC POWER TOOL Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18732951 Handheld power tool, in particular a sander, handheld power tool device, protective device, handheld power tool system, and method for manufacturing a handheld power tool device Non-Final OA Robert Bosch GmbH
18385759 VACUUM CLEANING HEAD WITH EDGE CLEANER Non-Final OA SHARKNINJA OPERATING LLC
18737067 SURFACE CLEANING APPARATUS Non-Final OA Omachron Intellectual Property Inc.
18231919 MOPPING BEHAVIOR CONTROL OF MOBILE CLEANING ROBOT Non-Final OA iRobot Corporation
18207346 MOBILE CLEANING ROBOT INCLUDING SCRUBBING FEATURES Final Rejection iRobot Corporation
17994486 MOBILE CLEANING ROBOT WITH A SPACER Final Rejection iRobot Corporation
17878411 EVACUATION STATION Non-Final OA iRobot Corporation
16950226 SYSTEMS AND METHODS FOR SCHEDULING MOBILE ROBOT MISSIONS Non-Final OA iRobot Corporation
16549153 Novel CMP Pad Design and Method of Using the Same Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18359180 Novel CMP Pad Design and Method of Using the Same Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18535675 POLISHING SYSTEM WITH PLATEN FOR SUBSTRATE EDGE CONTROL Non-Final OA Applied Materials, Inc.
18480060 ADVANCED POLISHING PADS AND RELATED POLISHING PAD MANUFACTURING METHODS Non-Final OA Applied Materials, Inc.
18050320 FLOOR CLEANER Non-Final OA Techtronic Cordless GP
18725438 SELF-CLEANING DUST COLLECTION HOLDER, AND DUST COLLECTION SYSTEM Non-Final OA Beijing Roborock Technology Co., Ltd.
18682776 BASE STATION AND CLEANING ROBOT SYSTEM Final Rejection Beijing Roborock Technology Co., Ltd.
18276814 AUTOMATIC CLEANING APPARATUS Non-Final OA BEIJING ROBOROCK TECHNOLOGY CO., LTD.
17297221 POLISHING PADS AND SYSTEMS AND METHODS OF MAKING AND USING THE SAME Final Rejection 3M INNOVATIVE PROPERTIES COMPANY
18215324 DEVICE BASE, WATER STORAGE DEVICE AND CLEANING ROBOT Non-Final OA BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
18385626 HAMMER BIT Final Rejection Snap-on Incorporated
18710800 DENTAL CLEANING APPLIANCE AND COMPONENTS THEREOF Non-Final OA Dyson Technology Limited
18062974 CLEANING ARTICLE Non-Final OA Carl Freudenberg KG

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