Prosecution Insights
Last updated: April 19, 2026

Examiner: MARCSISIN, ELLEN JEAN

Tech Center 1700 • Art Units: 1641 1674 1677 1678 1758

This examiner grants 33% of resolved cases

Performance Statistics

32.6%
Allow Rate
-32.4% vs TC avg
398
Total Applications
+48.3%
Interview Lift
1596
Avg Prosecution Days
Based on 350 resolved cases, 2023–2026

Rejection Statute Breakdown

10.9%
§101 Eligibility
10.9%
§102 Novelty
35.9%
§103 Obviousness
27.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18334135 TRANS-INTERFACIAL MAGNETIC SEPARATION Non-Final OA Northwestern University
18004402 SINGLE-MOLECULE, REAL-TIME, LABEL-FREE DYNAMIC BIOSENSING WITH NANOSCALE MAGNETIC FIELD SENSORS Non-Final OA Western Digital Technologies, Inc.
18455470 FOLIC ACID FUNCTIONALIZED COPPER SULFIDE NANOPARTICLES FOR THE DETECTION OF OVARIAN CANCER CELLS IN FLOW Non-Final OA ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY
16971228 LIQUID BIOPSY METHOD AND DEVICE Final Rejection THE JOHNS HOPKINS UNIVERSITY
18300689 ELECTROCHEMILUMINESCENCE METHOD OF DETECTING AN ANALYTE IN A LIQUID SAMPLE AND ANALYSIS SYSTEM Non-Final OA Hitachi High-Tech Corporation
16625282 QUANTIFICATION, ISOLATION, AND CHARACTERIZATION OF EXOSOMES USING DROPLET-BASED AND WELL-BASED MICROFLUIDIC SYSTEMS Non-Final OA THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
17786482 AN ACCURATE AND COMPREHENSIVE CARDIAC TROPONIN I ASSAY ENABLED BY NANOTECHNOLOGY AND PROTEOMICS Final Rejection Wisconsin Alumni Research Foundation
18473600 ASSAYS AND METHODS FOR THE DIAGNOSIS OF POST-STREPTOCOCCAL DISORDERS Non-Final OA Quest Diagnostics Investments LLC
17891458 IDENTIFICATION OF PATIENTS WITH ABNORMAL FRACTIONAL SHORTENING Non-Final OA Roche Diagnostics Operations, Inc.
17162140 Use of Biomarkers in the Assessment of the Early Transition from Arterial Hypertension to Heart Failure Non-Final OA Roche Diagnostics Operations, Inc.
17923148 METHOD OF USING EXTRACELLULAR VESICLES TO DETECT COMPLEMENT ACTIVATION, AND USES THEREOF TO ASSESS AND/OR MONITOR TREATMENT OF A COMPLEMENT-MEDIATED DISEASE Non-Final OA Alexion Pharmaceuticals, Inc.
18145873 SYSTEMS AND METHODS FOR DETECTION OF LAMININ BETA-1 SUBUNIT WITHIN TISSUE Final Rejection Axogen Corporation
18015317 ANTI-HUMAN IMMUNODEFICIENCY VIRUS-1 ANTIBODIES AND METHODS FOR USES THEREOF Final Rejection GRIFOLS DIAGNOSTIC SOLUTIONS INC
17757700 SENSOR FOR DETECTING A BIOANALYTE AND A METHOD FOR THE DETECTION THEREOF Non-Final OA Royal Melbourne Institute of Technology
14663560 BIOASSAY SYSTEM AND METHOD FOR DETECTING ANALYTES IN BODY FLUIDS Final Rejection INSTRUMENTATION LABORATORY COMPANY
18012111 Single Molecule Assays for Ultrasensitive Detection of Biomolecules Non-Final OA The Brigham and Women`s Hospital, Inc.
18312915 DETECTION AND QUANTIFICATION OF NATALIZUMAB Non-Final OA Abreos Biosciences, Inc.
18032128 SYSTEMS, COMPOSITIONS AND METHODS OF DETERMINING VIABILITY OF EMBRYOS USING THE SAME Non-Final OA BioIncept, LLC
18025867 DUAL-AFFINITY PROBES FOR ANALYTE DETECTION Non-Final OA Gemina Laboratories Ltd.
18022994 ULTRA-SENSITIVE DIGITAL RAPID CHROMATOGRAPHIC ASSAY SYSTEM AND METHOD FOR ANALYTES DETECTION Non-Final OA SHANGHAI SKIN DISEASE HOSPITAL
18040559 MULTIPLEXED ANALYTE DETECTION Non-Final OA VITAL BIOSCIENCES INC.
17955765 METHOD FOR PREDICTING THE RISK OF GETTING CANCER OR DIAGNOSING CANCER IN A FEMALE SUBJECT Non-Final OA SPHINGOTEC GMBH
17936020 METHODS FOR PROCESSING AND ANALYZING EXTRACELLULAR VESICLES Final Rejection Exosomics SpA
17910526 METHOD FOR DETECTING AND QUANTIFYING BETA-1,6-BRANCHED BETA-1,3-GLUCAN OR BETA-1,3-GLUCAN, AND KIT FOR DETECTING AND QUANTIFYING THE SAME Final Rejection TOEI SHINYAKU CO., LTD.
17776068 BEAD SYSTEMS, METHODS, AND APPARATUS FOR MAGNETIC BEAD-BASED ANALYTE DETECTION Final Rejection Quantum Diamond Technologies Inc.
17437256 Point of Care Concentration Analyzer Non-Final OA Novilux LLC
17051278 METHODS AND COMPOSITIONS FOR POINT OF CARE MEASUREMENT OF THE BIOAVAILABILITY OF THERAPEUTIC BIOLOGICS Non-Final OA GENALYTE, INC.
16970136 METHOD FOR OBTAINING A SPERMATOZOID CELL POPULATION WITH IMPROVED FITNESS Non-Final OA UNIVERSIDAD DEL PAIS VASCO/EUSKAL HERRIKO UNIBERTSITATEA
16968473 METHOD FOR THE QUANTIFICATION OF THE TOTAL GLUTEN CONTENT OF GRAINS IN FOOD SAMPLES Final Rejection R-Biopharm AG

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