Prosecution Insights
Last updated: May 29, 2026

Examiner: MARCSISIN, ELLEN JEAN

Tech Center 1700 • Art Units: 1625 1641 1674 1677 1678 1758

This examiner grants 33% of resolved cases

Performance Statistics

32.8%
Allow Rate
-32.2% vs TC avg
400
Total Applications
+48.6%
Interview Lift
3643
Avg Prosecution Days
Based on 351 resolved cases, 2023–2026

Rejection Statute Breakdown

4.6%
§101 Eligibility
7.3%
§102 Novelty
66.1%
§103 Obviousness
10.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17821835 Method of Antigen-Binding Protein Production Non-Final OA AMGEN INC.
18334135 TRANS-INTERFACIAL MAGNETIC SEPARATION Non-Final OA Northwestern 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
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.
18634228 Methods and Apparatus for Determination of Sensitivity to Wheat Non-Final OA Cyrex Laboratories, LLC
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.
14663560 BIOASSAY SYSTEM AND METHOD FOR DETECTING ANALYTES IN BODY FLUIDS Final Rejection INSTRUMENTATION LABORATORY COMPANY
18145873 SYSTEMS AND METHODS FOR DETECTION OF LAMININ BETA-1 SUBUNIT WITHIN TISSUE Final Rejection Axogen Corporation
18012551 CAPTURE FLOW ASSAY DEVICE AND METHODS Final Rejection RAMBAM MED-TECH LTD
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.
17776068 BEAD SYSTEMS, METHODS, AND APPARATUS FOR MAGNETIC BEAD-BASED ANALYTE DETECTION Final Rejection Quantum Diamond Technologies Inc.
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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