Prosecution Insights
Last updated: October 02, 2026

Examiner: OSENBAUGH-STEWART, ELIZA W

Tech Center 2800 • Art Units: 2881 2896

This examiner grants 73% of resolved cases

Analysis

Eliza W Osenbaugh-Stewart is an examiner in Tech Center 2800 and Art Unit 2881, with 688 resolved cases. The allowance rate is 73.0%, which is high and indicates a favorable environment for applicants. The median days to allowance is 924, suggesting an efficient prosecution process. This 924-day timeline is an advantage for applicants seeking a timely path to allowance for the 688 resolved cases in this unit.

The interview lift for this examiner is 16.7%. This 16.7% lift shows that while the 73.0% baseline is already strong, an interview provides a boost to the chances of success. With 688 resolved cases, this data point suggests that the examiner is receptive to direct communication. Practitioners should utilize interviews to further improve their odds, leveraging the 16.7% lift to navigate the 924-day median prosecution period in Tech Center 2800.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

73.0%
Allow Rate
+5.0% vs TC avg
735
Total Applications
+16.7%
Interview Lift
924
Avg Prosecution Days
Based on 689 resolved cases, 2023–2026

Rejection Statute Breakdown

3.3%
§101 Eligibility
18.2%
§102 Novelty
48.6%
§103 Obviousness
25.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18483097 ELECTRIC DEVICE WITH RADIOACTIVE PAINT Final Rejection MILWAUKEE ELECTRIC TOOL CORPORATION
18622598 NONDESTRUCTIVE DETERMINATION OF COATING MATERIAL COMPOSITION Non-Final OA The Boeing Company
18267281 HIGH-FREQUENCY ENHANCED ELECTROCHEMICAL STRAIN MICROSCOPE AND HIGH-FREQUENCY ENHANCED ELECTROCHEMICAL STRAIN MICROSCOPY USING THE SAME Final Rejection TOHOKU UNIVERSITY
18843158 Analysis System, Analysis Method, and Analysis Program Non-Final OA Hitachi High-Tech Corporation
18034929 Vacuum Treatment Apparatus and Vacuum Treatment Method Final Rejection Hitachi High-Tech Corporation
16887885 Charged Particle Beam System and Overlay Shift Amount Measurement Method Non-Final OA Hitachi High-Tech Corporation
18374531 INVERTING IMPLANTER PROCESS MODEL FOR PARAMETER GENERATION Final Rejection Applied Materials, Inc.
18144836 DOSE MAPPING AND SUBSTRATE ROTATION FOR SUBSTRATE CURVATURE CONTROL WITH IMPROVED RESOLUTION Non-Final OA Applied Materials, Inc.
18606289 GRID-LESS ION ENERGY DETECTOR Final Rejection Tokyo Electron Limited
18751600 ION DETECTOR AND MASS SPECTROMETER Non-Final OA SHIMADZU CORPORATION
18287052 SYSTEMS AND METHODS FOR SINGLE-ION MASS SPECTROMETRY WITH TEMPORAL INFORMATION Final Rejection Brown University
18098215 METHOD AND DEVICE FOR DETERMINING AN ALIGNMENT OF A PHOTOMASK ON A SAMPLE STAGE WHICH IS DISPLACEABLE ALONG AT LEAST ONE AXIS AND ROTATABLE ABOUT AT LEAST ONE AXIS Non-Final OA Carl Zeiss SMT GmbH
18530109 CHARGED PARTICLE APPARATUS AND METHOD Non-Final OA ASML Netherlands B.V.
18064110 REPLACEABLE MODULE FOR A CHARGED PARTICLE APPARATUS Non-Final OA ASML Netherlands B.V.
17798538 CHARGED PARTICLE ASSESSMENT TOOL, INSPECTION METHOD Non-Final OA ASML NETHERLANDS B.V.
17794435 CHARGED PARTICLE MANIPULATOR DEVICE Non-Final OA ASML NETHERLANDS B.V.
17204657 USE OF MAGNETIC ELEMENTS TO SHAPE AND DEFOCUS CHARGED PARTICLE BEAMS Final Rejection Varian Medical Systems, Inc.
18538840 VACUUM SYSTEM FOR A MASS SPECTROMETER Final Rejection Thermo Finnigan LLC
18702003 Methods and Systems for Simultaneously Generating Differential Mobility Spectrometry-Ms and -Ms/Ms Data Final Rejection DH Technologies Development Pte. Ltd.
18569701 AUTOMATED OPTIMIZATION OF DIFFERENTIAL MOBILITY SPECTROMETRY (DMS) SEPARATIONS USING ALPHA FUNCTIONS Final Rejection DH Technologies Development Pte. Ltd.
18569781 Electron-Based Fragmentation Method Final Rejection DH Technologies Development Pte. Ltd.
18468892 CONDITIONAL OPERATIONS IN QUANTUM OBJECT CONFINEMENT APPARATUS USING BROADCASTED CONTROL VOLTAGE SIGNALS Final Rejection Quantinuum LLC
18698443 ION DETECTORS Final Rejection Micromass UK Limited
17928190 A PROBE CASSETTE FOR STORING, TRANSPORTING AND HANDLING ONE OR MORE PROBE DEVICES FOR A PROBE BASED SYSTEM Final Rejection Nearfield Instruments B.V.
17833047 SCATTERING FIELDS IN A MEDIUM TO REDIRECT WAVE ENERGY ONTO SURFACES IN SHADOW Non-Final OA Luminated Glazings, LLC

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