Prosecution Insights
Last updated: May 29, 2026

Examiner: GASSEN, CHRISTOPHER J

Tech Center 2800 • Art Units: 2863 2881

This examiner grants 80% of resolved cases

Performance Statistics

80.5%
Allow Rate
+12.5% vs TC avg
163
Total Applications
+23.5%
Interview Lift
1021
Avg Prosecution Days
Based on 133 resolved cases, 2023–2026

Rejection Statute Breakdown

3.1%
§101 Eligibility
2.7%
§102 Novelty
77.7%
§103 Obviousness
15.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18272948 METHOD AND APPARATUS FOR A POLYMER ELECTROSPRAY EMITTER Final Rejection Massachusetts Institute of Technology
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
18261484 LIGHT IRRADIATOR Final Rejection KYOCERA 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.
18479588 COMPOSITE CONFINEMENT APPARATUS ASSEMBLY INCLUDING PHOTONICS PLATFORM Non-Final OA Quantinuum LLC
18237854 NON-DESTRUCTIVE SEM-BASED DEPTH-PROFILING OF SAMPLES Non-Final OA APPLIED MATERIALS ISRAEL LTD.
18546010 POWER SUPPLY SYSTEMS AND METHODS Final Rejection Micromass UK Limited
18546918 HIGH PRESSURE ION OPTICAL DEVICES Final Rejection THERMO FISHER SCIENTIFIC (BREMEN) GMBH
18687085 ADJUSTABLE BROADBAND RADAR ABSORBER Non-Final OA RHEIN TECH LABORATORIES INC
18286897 A SYSTEM TO GENERATE A HIGH YIELD OF NEGATIVE IONS FOR ICP-MS Non-Final OA Kimia Analytics 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.
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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