Prosecution Insights
Last updated: April 19, 2026

Examiner: CHANG, HANWAY

Tech Center 2800 • Art Units: 2872 2878 2881

This examiner grants 86% of resolved cases

Performance Statistics

85.9%
Allow Rate
+17.9% vs TC avg
691
Total Applications
+7.6%
Interview Lift
833
Avg Prosecution Days
Based on 626 resolved cases, 2023–2026

Rejection Statute Breakdown

1.5%
§101 Eligibility
34.8%
§102 Novelty
38.4%
§103 Obviousness
6.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18526286 DEVICES AND SYSTEMS FOR SPATIAL SUBTRACTION OF ELECTRON BACKSCATTER DIFFRACTION PATTERNS Non-Final OA Katholieke Universiteit Leuven
19227137 SYSTEMS AND METHODS FOR DISINFECTION Final Rejection P Tech, LLC
18524043 ION BEAM CURRENT MEASUREMENT DEVICE AND ION BEAM IMPLANTATION SYSTEM Non-Final OA Infineon Technologies AG
18563569 ION FOCUSING AND MANIPULATION Non-Final OA Purdue Research Foundation
18391797 BEARING SYSTEM, LITHOGRAPHY SYSTEM, AND METHOD FOR PRODUCING A BEARING SYSTEM Non-Final OA Carl Zeiss SMT GmbH
18274047 Lamella Mounting Method, and Analysis System Final Rejection Hitachi High-Tech Corporation
18037292 Method for Controlling Mass Spectrometer Final Rejection Hitachi High-Tech Corporation
17049364 MULTIPOLE LENS, ABERRATION CORRECTOR USING SAME, AND CHARGED PARTICLE BEAM DEVICE Final Rejection HITACHI HIGH-TECH CORPORATION
18513481 CHARGED PARTICLE OPTICAL DEVICE, OBJECTIVE LENS ASSEMBLY, DETECTOR, DETECTOR ARRAY, AND METHODS Non-Final OA ASML Netherlands B.V.
18280917 TARGET MATERIAL TRANSFER SYSTEM COMPONENTS AND METHODS OF MAKING THE SAME Non-Final OA ASML Netherlands B.V.
18011593 APPARATUS FOR AND METHOD OF ACCELERATING DROPLETS IN A DROPLET GENERATOR FOR AN EUV SOURCE Non-Final OA ASML Netherlands B.V.
17891961 INSPECTION APPARATUS Non-Final OA ASML Netherlands B.V.
18404400 DEVICE FOR CONTROLLING TRAPPED IONS Non-Final OA Infineon Technologies Austria AG
18509372 OPERATING A PARTICLE BEAM APPARATUS Non-Final OA Carl Zeiss Microscopy GmbH
18561031 SYSTEMS AND METHODS FOR PERFORMING A CHECK OF A DIFFERENTIAL MOBILITY SPECTROMETER Non-Final OA DH Technologies Development Pte. Ltd.
18280542 Bifurcated Mass Spectrometer Final Rejection DH Technologies Development Pte. Ltd.
18268438 METHOD AND SYSTEM FOR TIMED INTRODUCTION OF SAMPLE INTO A MASS SPECTROMETER Final Rejection DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
18247799 High Resolution Detection to Manage Group Detection for Quantitative Analysis by MS/MS Final Rejection DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
18131473 DEBRIS MITIGATION IN LASER PRODUCED PLASMAS USING THREE-DIMENSIONAL MAGNETIC NULLS Final Rejection The Trustees of Princeton University
18391947 COMPOSITIONAL MAPPING EMPLOYING VARIABLE CHARGED PARTICLE BEAM PARAMETERS FOR IMAGING AND ENERGY-DISPERSIVE X-RAY SPECTROSCOPY Non-Final OA FEI COMPANY
18509205 IN-VACUUM CHAMBER CONTROLLED-GAS-FILM DEVICE TO REDUCE LASER ABLATION REDEPOSITS Non-Final OA FEI Company
18745833 Radioabsorbent Assemblies Non-Final OA Egg Medical, Inc.
18572776 ELECTRON BEAM LITHOGRAPHY APPARATUS, ELECTRON BEAM LITHOGRAPHY METHOD, AND RECORDING MEDIUM Non-Final OA IMS Nanofabrication GmbH
18252522 FOIL TRAP COVER DEVICE AND DEBRIS REDUCTION APPARATUS Non-Final OA Ushio Denki Kabushiki Kaisha
18018960 EXTREME ULTRAVIOLET LIGHT SOURCE APPARATUS Non-Final OA USHIO DENKI KABUSHIKI KAISHA
17921678 EXTREME ULTRAVIOLET LIGHT SOURCE APPARATUS Non-Final OA USHIO DENKI KABUSHIKI KAISHA
18422052 ULTRAVIOLET LIGHT DISINFECTANT DEVICE Non-Final OA NORTHLIGHT ELECTRIC COMPANY LIMITED
18517515 SCALABLE NEUTRAL ATOM BASED QUANTUM COMPUTING Non-Final OA Atom Computing Inc.
18329325 SYSTEM AND METHOD FOR GENERATING AND ANALYZING ROUGHNESS MEASUREMENTS Non-Final OA FRACTILIA, LLC
18560259 PURIFYING DEVICE Non-Final OA D-ORBIT S.P.A.

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