Prosecution Insights
Last updated: May 29, 2026

Examiner: CHEN, KEATH T

Tech Center 1700 • Art Units: 1712 1716 1792

This examiner grants 30% of resolved cases

Performance Statistics

30.3%
Allow Rate
-34.7% vs TC avg
1,210
Total Applications
+24.5%
Interview Lift
1355
Avg Prosecution Days
Based on 1146 resolved cases, 2023–2026

Rejection Statute Breakdown

0.2%
§101 Eligibility
1.8%
§102 Novelty
94.2%
§103 Obviousness
1.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18442808 LOCAL PART MASKING FOR IMPROVED UNIFORMITY IN CERAMIC MATRIX COMPOSITES Non-Final OA RTX Corporation
18476808 NOVEL COATING METHOD OF COMPLEX 3D STRUCTURES USING LOW PRESSURE CHEMICAL VAPOR DEPOSITION Non-Final OA California Institute of Technology
18644599 ELECTROSTATIC CHUCK, ETCHING APPARATUS, AND METHOD OF MANUFACTURING DISPLAY DEVICE Non-Final OA Samsung Display Co., LTD.
18449822 MASK ASSEMBLY AND MANUFACTURING METHOD THEREOF Non-Final OA Samsung Display Co., Ltd.
18296490 APPARATUS AND METHOD FOR MANUFACTURING DISPLAY DEVICE Non-Final OA Samsung Display Co., Ltd.
18048686 MASK ASSEMBLY AND METHOD OF MANUFACTURING THE SAME Non-Final OA SAMSUNG DISPLAY CO., LTD.
18523394 SINGLE WAFER PROCESSING ENVIRONMENTS WITH SPATIAL SEPARATION Final Rejection Applied Materials, Inc.
18198123 SENSOR FOR MEASUREMENT OF RADICALS Non-Final OA Applied Materials, Inc.
18094765 CHAMBERS, METHODS, AND APPARATUS FOR GENERATING ATOMIC RADICALS USING UV LIGHT Non-Final OA Applied Materials, Inc.
17693037 SEMICONDUCTOR CHAMBER COMPONENTS WITH MULTI-LAYER COATING Non-Final OA Applied Materials, Inc.
17046975 EVAPORATION SOURCE FOR DEPOSITION OF EVAPORATED MATERIAL ON A SUBSTRATE, DEPOSITION APPARATUS, METHOD FOR MEASURING A VAPOR PRESSURE OF EVAPORATED MATERIAL, AND METHOD FOR DETERMINING AN EVAPORATION RATE OF AN EVAPORATED MATERIAL Non-Final OA Applied Materials, Inc.
18159310 METHOD FOR INSPECTING MASK, METHOD FOR MANUFACTURING MASK, APPARATUS FOR INSPECTING MASK, STORAGE MEDIUM, AND MASK Non-Final OA Dai Nippon Printing Co., Ltd.
18135937 MASK-SUPPORT ASSEMBLY AND PRODUCING METHOD THEREOF Final Rejection Olum Material Corporation
18456614 PLASMA PROCESSING APPARATUS, PLASMA PROCESSING METHOD, AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD Non-Final OA Kioxia Corporation
17815318 PLASMA ETCHER EDGE RING WITH A CHAMFER GEOMETRY AND IMPEDANCE DESIGN Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
18353747 PLASMA PROCESSING APPARATUS AND PLASMA STATE ESTIMATION METHOD Non-Final OA TOKYO ELECTRON LIMITED
18205426 PLASMA PROCESSING APPARATUS, PLASMA PROCESSING METHOD, PRESSURE VALVE CONTROL DEVICE, PRESSURE VALVE CONTROL METHOD, AND PRESSURE REGULATION SYSTEM Final Rejection Tokyo Electron Limited
17859520 PLASMA PROCESSING APPARATUS AND PROCESSING METHOD Non-Final OA TOKYO ELECTRON LIMITED
17645829 PROCESS MODULE, SUBSTRATE PROCESSING SYSTEM, AND PROCESSING METHOD Non-Final OA Tokyo Electron Limited
19063918 LOW-TEMPERATURE VAPORIZER FOR ION IMPLANTER WITH IN-VACUUM CONTROLLED FLOW Final Rejection Axcelis Technologies, Inc.
18014659 COATING DEVICE FOR DEPOSITING A COATING MATERIAL ON A SUBSTRATE Non-Final OA ThyssenKrupp Steel Europe AG
18465537 GAS SUPPLIER PROCESSING APPARATUS, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Non-Final OA Kokusai Electric Corporation
17476843 VAPORIZING SYSTEM, SUBSTRATE PROCESSING APPARATUS AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE Non-Final OA KOKUSAI ELECTRIC CORPORATION
18148078 LIFT PIN UNIT AND UNIT FOR SUPPORTING SUBSTRATE AND SUBSTRATE TREATING APPARATUS Non-Final OA SEMES CO., LTD.
18146693 APPARATUS AND METHOD FOR TREATING SUBSTRATE Non-Final OA SEMES CO., LTD.
18125137 METAL MASK Final Rejection DARWIN PRECISIONS CORPORATION
18035200 PEDESTAL INCLUDING SEAL Non-Final OA LAM RESEARCH CORPORATION
18250349 LOCALIZED PLASMA ARC PREVENTION VIA PURGE RING Final Rejection Lam Research Corporation
17785862 METHOD AND APPARATUS FOR USE IN GENERATING PLASMA Non-Final OA Dyson Technology Limited
17638796 THERMAL EVAPORATION PLASMA DEPOSITION Non-Final OA Dyson Technology Limited

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