Prosecution Insights
Last updated: April 19, 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
1209
Total Applications
+24.5%
Interview Lift
1407
Avg Prosecution Days
Based on 1139 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
16.5%
§102 Novelty
56.3%
§103 Obviousness
25.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
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.
18504026 DEPOSITION APPARATUS 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.
18523394 SINGLE WAFER PROCESSING ENVIRONMENTS WITH SPATIAL SEPARATION Final Rejection Applied Materials, Inc.
18484232 CERAMIC RF RETURN KIT DESIGN Non-Final OA Applied Materials, Inc.
18198123 SENSOR FOR MEASUREMENT OF RADICALS Final Rejection 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.
17346347 SYSTEMS AND METHODS FOR GRAFTING A MOLECULAR CODE ONTO A MATERIAL BY AN ATMOSPHERIC PLASMA TREATMENT Non-Final OA Illinois Tool Works Inc.
18320219 PLASMA ETCHING SYSTEM HAVING FOCUS RING WITH PROLONGED LIFETIME Non-Final OA Taiwan Semiconductor Manufacturing Company, Ltd.
17701831 SEMICONDUCTOR MANUFACTURING APPARATUS MEMBER AND SEMICONDUCTOR MANUFACTURING APPARATUS Final Rejection TOTO LTD.
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.
17972242 HIGH VAPOR PRESSURE DELIVERY SYSTEM Non-Final OA ENTEGRIS, INC.
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
18205426 PLASMA PROCESSING APPARATUS, PLASMA PROCESSING METHOD, PRESSURE VALVE CONTROL DEVICE, PRESSURE VALVE CONTROL METHOD, AND PRESSURE REGULATION SYSTEM Final Rejection Tokyo Electron Limited
18159295 SUBSTRATE PROCESSING APPARATUS Final Rejection Tokyo Electron Limited
18156618 PLASMA PROCESSING APPARATUS Final Rejection Tokyo Electron Limited
17859520 PLASMA PROCESSING APPARATUS AND PROCESSING METHOD Non-Final OA TOKYO ELECTRON LIMITED
17807506 FILM FORMING APPARATUS Final Rejection Tokyo Electron Limited
17645829 PROCESS MODULE, SUBSTRATE PROCESSING SYSTEM, AND PROCESSING METHOD Non-Final OA Tokyo Electron Limited
16992550 FILM FORMING APPARATUS AND FILM FORMING METHOD Final Rejection Tokyo Electron Limited
19063918 LOW-TEMPERATURE VAPORIZER FOR ION IMPLANTER WITH IN-VACUUM CONTROLLED FLOW Final Rejection Axcelis Technologies, Inc.
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
17475407 SUBSTRATE PROCESSING APPARATUS, REFLECTOR 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.

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