Prosecution Insights
Last updated: April 19, 2026

Examiner: GASSEN, CHRISTOPHER J

Tech Center 2800 • Art Units: 2863 2881

This examiner grants 80% of resolved cases

Performance Statistics

80.2%
Allow Rate
+12.2% vs TC avg
160
Total Applications
+24.3%
Interview Lift
1075
Avg Prosecution Days
Based on 131 resolved cases, 2023–2026

Rejection Statute Breakdown

2.9%
§101 Eligibility
17.5%
§102 Novelty
42.5%
§103 Obviousness
32.6%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18272948 METHOD AND APPARATUS FOR A POLYMER ELECTROSPRAY EMITTER Final Rejection Massachusetts Institute of Technology
18261484 LIGHT IRRADIATOR Final Rejection KYOCERA CORPORATION
18384253 SEMICONDUCTOR PROCESS APPARATUS AND METHOD Non-Final OA Taiwan Semiconductor Manufacturing Company LTD
18350522 OPTICAL ELEMENT FOR REFLECTING RADIATION, AND OPTICAL ASSEMBLY Final Rejection Carl Zeiss SMT GmbH
18419336 TANDEM DIFFERENTIAL MOBILITY ION MOBILITY SPECTROMETRY Non-Final OA Hamilton Sundstrand Corporation
18257941 ION SOURCE, MASS SPECTROMETER, AND CAPILLARY INSERTION METHOD Non-Final OA HITACHI HIGH-TECH CORPORATION
18293408 DEVICE, SYSTEM AND METHOD FOR DETERMINING DEGRADATION Non-Final OA NTT, Inc.
18016811 METHOD AND APPARATUS FOR IDENTIFYING CONTAMINATION IN A SEMICONDUCTOR FAB Final Rejection ASML NETHERLANDS B.V.
18353301 ION BEAM IRRADIATION APPARATUS AND METHOD Final Rejection Nissin Ion Equipment Co., Ltd.
18527998 HYBRID ARCHITECTURE FOR QUANTUM OBJECT CONFINEMENT APPARATUS Non-Final OA Quantinuum LLC
18237854 NON-DESTRUCTIVE SEM-BASED DEPTH-PROFILING OF SAMPLES Non-Final OA APPLIED MATERIALS ISRAEL LTD.
18568404 MS Calibration for OPI-MS Non-Final OA DH Technologies Development Pte. Ltd.
18546010 POWER SUPPLY SYSTEMS AND METHODS Final Rejection Micromass UK Limited
18506957 MINIMIZATION OF ENERGY SPREAD IN FOCUSED ION BEAM (FIB) SYSTEMS Non-Final OA FEI Company
18687085 ADJUSTABLE BROADBAND RADAR ABSORBER Non-Final OA RHEIN TECH LABORATORIES INC
18523158 METHOD FOR DESORBING AND IONIZING OF SAMPLE MATERIAL Non-Final OA Bruker Daltonics GmbH & Co. KG
18520783 TERMINALLY STERILIZED ALPHA-EMITTING ISOTOPE GENERATOR AND METHOD FOR PRODUCING TERMINALLY STERILIZED ALPHA-EMITTING ISOTOPE Non-Final OA TAG1 Inc.
18286897 A SYSTEM TO GENERATE A HIGH YIELD OF NEGATIVE IONS FOR ICP-MS Non-Final OA Kimia Analytics Inc
18205131 AUTOMATED INLINE NANOPARTICLE STANDARD MATERIAL ADDITION Final Rejection Elemental Scientific, Inc.
17927137 AN ION SHUTTER, A METHOD OF CONTROLLING ION SHUTTER, AND DETECTION METHODS AND APPARATUS Non-Final OA SMITHS DETECTION-WATFORD LIMITED

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