Prosecution Insights
Last updated: August 18, 2026

Examiner: CHU, JOHN S Y

Tech Center 2800 • Art Units: 1722 1737 1795 2881

This examiner grants 77% of resolved cases

Performance Statistics

77.1%
Allow Rate
+9.1% vs TC avg
1,036
Total Applications
+5.7%
Interview Lift
1073
Avg Prosecution Days
Based on 973 resolved cases, 2023–2026

Rejection Statute Breakdown

0.9%
§101 Eligibility
20.9%
§102 Novelty
55.1%
§103 Obviousness
14.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18377365 PHOTORESIST COMPOSITION FOR EXTREME ULTRAVIOLET, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE USING THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18212913 PHOTORESIST COMPOSITION AND METHOD OF FABRICATING SEMICONDUCTOR DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
18098233 PHOTOSENSITIVE POLYMER CAPABLE OF MULTI-STEP DEPROTECTION REACTION, PHOTORESIST COMPOSITION INCLUDING THE PHOTOSENSITIVE POLYMER, AND METHOD OF MANUFACTURING THE INTEGRATED CIRCUIT DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17858924 METAL CONTAINING PHOTORESIST DEVELOPER COMPOSITION, AND METHOD OF FORMING PATTERNS INCLUDING DEVELOPING STEP USING THE SAME Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17858921 COMPOSITION FOR REMOVING EDGE BEADS FROM METAL CONTAINING RESISTS, AND METHOD OF FORMING PATTERNS INCLUDING STEP OF REMOVING EDGE BEADS USING THE COMPOSITION Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17405138 PHOTORESIST COMPOSITIONS, METHODS FOR FORMING PATTERN USING THE SAME, AND METHODS FOR FABRICATING SEMICONDUCTOR DEVICE USING THE SAME Final Rejection Samsung Electronics Co., Ltd.
17935185 PHOTOSENSITIVE STRUCTURAL BODY AND METHOD OF PRODUCING THE PHOTOSENSITIVE STRUCTURAL BODY, AND INKJET RECORDING HEAD Final Rejection CANON KABUSHIKI KAISHA
18485674 ACTINIC RAY-SENSITIVE OR RADIATION-SENSITIVE RESIN COMPOSITION, RESIST FILM, PATTERN FORMING METHOD, METHOD FOR MANUFACTURING ELECTRONIC DEVICE, AND COMPOUND Non-Final OA FUJIFILM Corporation
18214200 PATTERN FORMING METHOD, METHOD FOR PRODUCING ELECTRONIC DEVICE, AND KIT Non-Final OA FUJIFILM Corporation
18059205 LAMINATE Final Rejection FUJIFILM Corporation
18059198 ON-PRESS DEVELOPMENT TYPE LITHOGRAPHIC PRINTING PLATE PRECURSOR, METHOD OF PREPARING LITHOGRAPHIC PRINTING PLATE, AND LITHOGRAPHIC PRINTING METHOD Final Rejection FUJIFILM Corporation
17902404 TRANSFER FILM, PHOTOSENSITIVE MATERIAL, PATTERN FORMING METHOD, MANUFACTURING METHOD OF CIRCUIT BOARD, AND MANUFACTURING METHOD OF TOUCH PANEL Final Rejection FUJIFILM Corporation
18147472 LIGHT RESPONSIVE PHOTORESISTS AND METHODS Final Rejection Intel Corporation
19070505 SEMICONDUCTOR PHOTORESIST COMPOSITION, METHOD FOR PREPARING THEREOF AND METHOD OF FORMING PATTERNS USING THE COMPOSITION Non-Final OA SAMSUNG SDI CO., LTD.
18404506 ONIUM SALT, CHEMICALLY AMPLIFIED POSITIVE RESIST COMPOSITION, AND RESIST PATTERN FORMING PROCESS Non-Final OA Shin-Etsu Chemical Co., Ltd.
18377117 Onium Salt, Resist Composition, And Patterning Process Non-Final OA SHIN-ETSU CHEMICAL CO., LTD.
18200892 CHEMICALLY AMPLIFIED POSITIVE RESIST COMPOSITION AND RESIST PATTERN FORMING PROCESS Final Rejection Shin-Etsu Chemical Co., Ltd.
18095235 RESIST COMPOSITION AND PATTERN FORMING PROCESS Non-Final OA Shin-Etsu Chemical Co., Ltd.
17691352 CHEMICALLY AMPLIFIED POSITIVE RESIST COMPOSITION AND RESIST PATTERN FORMING PROCESS Final Rejection Shin-Etsu Chemical Co., Ltd.
17545062 ALCOHOL COMPOUND, CHEMICALLY AMPLIFIED NEGATIVE RESIST COMPOSITION AND RESIST PATTERN FORMING PROCESS Final Rejection Shin-Etsu Chemical Co., Ltd.
18782565 RESIN, PHOTORESIST COMPOSITION, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Final Rejection Taiwan Semiconductor Manufacturing Company, Ltd.
18757949 PHOTORESIST FOR SEMICONDUCTOR FABRICATION Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18312199 COMPOSITION AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
17726036 PHOTORESIST COMPOSITION WITH NOVEL SOLVENT Final Rejection TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18783765 EUV METALLIC RESIST PERFORMANCE ENHANCEMENT VIA ADDITIVES Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18500593 SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
17429015 FLEXOGRAPHIC PRINTING RAW PLATE AND MANUFACTURING METHOD OF FLEXOGRAPHIC PRINTING PLATE Final Rejection ASAHI KASEI KABUSHIKI KAISHA
17909999 NEGATIVE TYPE PHOTOSENSITIVE COMPOSITION COMPRISING REFLECTANCE MODIFIER Non-Final OA Merck Patent GmbH
18258533 PHOTOSENSITIVE DRY FILM, LAMINATED FILM, METHOD FOR PRODUCING LAMINATED FILM, AND METHOD FOR PRODUCING PATTERNED RESIST FILM Non-Final OA TOKYO OHKA KOGYO CO., LTD.
18256899 RESIST COMPOSITION AND METHOD FOR FORMING RESIST PATTERN Final Rejection TOKYO OHKA KOGYO CO., LTD.

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