Prosecution Insights
Last updated: April 19, 2026

Examiner: CHU, JOHN S Y

Tech Center 1700 • Art Units: 1722 1737 1795

This examiner grants 77% of resolved cases

Performance Statistics

77.2%
Allow Rate
+12.2% vs TC avg
1024
Total Applications
+5.1%
Interview Lift
1136
Avg Prosecution Days
Based on 959 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
29.9%
§102 Novelty
48.2%
§103 Obviousness
12.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18212913 PHOTORESIST COMPOSITION AND METHOD OF FABRICATING SEMICONDUCTOR DEVICE Non-Final OA SAMSUNG ELECTRONICS CO., LTD.
17938338 PHOTORESIST COMPOSITIONS AND METHODS FOR FABRICATING SEMICONDUCTOR DEVICE USING THE SAME Final Rejection Samsung Electronics Co., Ltd.
17721852 PHOTORESIST COMPOSITION AND METHOD OF FABRICATING SEMICONDUCTOR DEVICE Final Rejection 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.
17994766 PHOTOSENSITIVE COMPOSITION, FILM, COLOR FILTER, SOLID-STATE IMAGING ELEMENT, AND IMAGE DISPLAY DEVICE Non-Final OA FUJIFILM Corporation
17946148 PHOTOSENSITIVE MATERIAL, TRANSFER FILM, MANUFACTURING METHOD OF CIRCUIT WIRING, MANUFACTURING METHOD OF TOUCH PANEL, AND PATTERN FORMING METHOD Non-Final OA FUJIFILM Corporation
18742227 PHOTOSENSITIVE RESIN COMPOSITION, METHOD FOR MANUFACTURING CURED RELIEF PATTERN, AND SEMICONDUCTOR APPARATUS Final Rejection ASAHI KASEI KABUSHIKI KAISHA
17801479 STRIPPER COMPOSITION FOR REMOVING PHOTORESIST AND STRIPPING METHOD OF PHOTORESIST USING THE SAME Non-Final OA LG CHEM, LTD.
17935185 PHOTOSENSITIVE STRUCTURAL BODY AND METHOD OF PRODUCING THE PHOTOSENSITIVE STRUCTURAL BODY, AND INKJET RECORDING HEAD Non-Final OA CANON KABUSHIKI KAISHA
18782565 RESIN, PHOTORESIST COMPOSITION, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18232225 PHOTORESIST COMPOSITION AND METHOD OF FORMING PHOTORESIST PATTERN Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
18312199 COMPOSITION AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Non-Final OA TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
17814718 CONDUCTIVE COMPOSITE, RESIST COATING MATERIAL, RESIST, AND METHOD FOR FORMING RESIST PATTERN Non-Final OA Mitsubishi Chemical Corporation
18147472 LIGHT RESPONSIVE PHOTORESISTS AND METHODS Non-Final OA Intel Corporation
19070505 SEMICONDUCTOR PHOTORESIST COMPOSITION, METHOD FOR PREPARING THEREOF AND METHOD OF FORMING PATTERNS USING THE COMPOSITION Final Rejection SAMSUNG SDI CO., LTD.
17902167 HARDMASK COMPOSITION, HARDMASK LAYER, AND METHOD OF FORMING PATTERNS Final Rejection SAMSUNG SDI CO., LTD.
17868563 RESIST UNDERLAYER COMPOSITION AND METHOD OF FORMING PATTERNS USING THE COMPOSITION Non-Final OA SAMSUNG SDI CO., LTD.
18271908 PHOTOSENSITIVE RESIN COMPOSITION, PHOTOSENSITIVE RESIN FILM, PHOTOSENSITIVE DRY FILM, AND PATTERN FORMATION METHOD Non-Final OA Shin-Etsu Chemical Co., Ltd.
18095235 RESIST COMPOSITION AND PATTERN FORMING PROCESS Final Rejection Shin-Etsu Chemical Co., Ltd.
17944654 CHEMICALLY AMPLIFIED RESIST COMPOSITION AND PATTERNING PROCESS Non-Final OA Shin-Etsu Chemical Co., Ltd.
18335852 PHOTO LIGAND DESIGN FOR EUV OR E-BEAM METALLIC PHOTORESISTS Non-Final OA Taiwan Semiconductor Manufacturing Co., Ltd.
18222666 PHOTORESIST COMPOSITION AND METALLIZATION METHOD Non-Final OA DuPont Electronic Materials International, LLC
18266620 COMPOUND, LEVELING AGENT, COATING COMPOSITION, RESIST COMPOSITION, AND ARTICLE Non-Final OA DIC Corporation
18090313 COMPOUND, RESIST UNDERLAYER FILM COMPOSITION INCLUDING SAME, AND RESIST UNDERLAYER FILM Non-Final OA DONGJIN SEMICHEM CO., LTD.
17913610 LIGHT-SENSITIVE RESIN ORIGINAL PRINTING PLATE FOR LETTERPRESS PRINTING Non-Final OA TOYOBO CO., LTD.
18085082 PHOTORESIST UNDERLAYER COMPOSITION Non-Final OA ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
18055416 METHOD OF PATTERNING SEMICONDUCTOR LAYER Non-Final OA Raynergy Tek Incorporation
18342754 PHOTOSENSITIVE RESIN COMPOSITION, PROTECTIVE LAYER AND METHOD FOR PATTERN FORMATION Non-Final OA Advanced Echem Materials Company Limited
18195200 SUBSTRATE PROCESSING COMPOSITION AND SUBSTRATE PROCESSING METHOD USING THE SAME Non-Final OA SK Inc.
17777638 REPLACEMENT LIQUID OF LIQUID FILLING BETWEEN RESIST PATTERNS, AND METHOD FOR PRODUCING RESIST PATTERNS USING THE SAME Final Rejection Merch Patent GmbH

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