Prosecution Insights
Last updated: April 19, 2026

Examiner: ROGERS, ERIC JASON

Tech Center 1600 • Art Units: 1631 1638

This examiner grants 62% of resolved cases

Performance Statistics

62.2%
Allow Rate
+2.2% vs TC avg
141
Total Applications
+27.6%
Interview Lift
1416
Avg Prosecution Days
Based on 90 resolved cases, 2023–2026

Rejection Statute Breakdown

5.0%
§101 Eligibility
15.4%
§102 Novelty
34.6%
§103 Obviousness
30.7%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17611511 MPS MODIFIED PEPTIDES AND USE THEREOF Final Rejection The Regents of the University of California
16960691 Method to Implement a CRISPR Gene Drive in Mammals Non-Final OA The Regents of the University of California
17443501 NANOCOIL-SUBSTRATE COMPLEX FOR CONTROLLING STEM CELL BEHAVIOR, PREPARATION METHOD THEREOF, AND METHOD OF CONTROLLING ADHESION AND DIFFERENTIATION OF STEM CELL BY USING THE SAME Final Rejection Korea University Research and Business Foundation
17916683 METHODS TO ENRICH ENTEROENDOCRINE CELLS AND THEIR SUBTYPES IN THE CONTIGUOUS, INTESTINAL MONOLAYER SYSTEMS Non-Final OA University of Washington
17439482 IMPROVED SURVIVAL OF HUMAN CELLS DIFFERENTIATED IN VITRO BY PRPF31 GENE EXPRESSION KNOCKDOWN Final Rejection UNIVERSITY OF WASHINGTON
17355290 METHODS AND COMPOSITIONS RELATED TO EXTRACELLULAR VESICLES Non-Final OA Board of Regents, the University of Texas System
17042007 USE OF EXOSOMES FOR TARGETED DELIVERY OF THERAPEUTIC AGENTS Final Rejection BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
17783473 USE OF POLYVINYL ALCOHOL FOR CELL CULTURE OF IMMUNE CELLS Non-Final OA The Board of Trustees of the Leland Stanford Junior University
16969127 MODIFIED PLURIPOTENT STEM CELLS AND METHODS OF MAKING AND USE Non-Final OA KITE PHARMA, INC.
17924040 METHODS AND COMPOSITIONS FOR MAKING AND USING ENDOCARDIAL CELLS Non-Final OA University Health Network
17908585 METHOD FOR NATURAL KILLER CELL EXPANSION Non-Final OA ACADEMIA SINICA
17273256 MEDIUM COMPOSITION AND METHOD FOR CULTURING MESENCHYMAL STEM CELLS Non-Final OA ACADEMIA SINICA
16985432 CHIMERIC ANTIGEN RECEPTORS FOR TREATMENT OF NEURODEGENERATIVE DISEASES AND DISORDERS Final Rejection THE TRUSTEES OF DARTMOUTH COLLEGE
17429391 GENETICALLY MODIFIED HEMATOPOIETIC STEM AND PROGENITOR CELLS (HSPCS) AND MESENCHYMAL CELLS AS A PLATFORM TO REDUCE OR PREVENT METASTASIS, TREAT AUTOIMMUNE AND INFLAMMATORY DISORDERS, AND REBALANCE THE IMMUNE MILIEU AND DYSREGULATED NICHES Non-Final OA The United States of America,as represented by the Secretary,Department of Health and Human Services
17755732 CUSTOMIZABLE 3D CELL CULTURE SYSTEM COMPRISING HYDROGEL-EMBEDDED CELLS AND USES THEREOF Final Rejection THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARNING/MCGILL UNIVERSITY
18004151 COMPOSITIONS AND METHODS FOR CELLULAR REPROGRAMMING USING CIRCULAR RNA Non-Final OA ElevateBio Technologies, Inc.
18284129 METHOD FOR PRODUCING OVARIAN SOMATIC CELL-LIKE CELLS, AND METHOD FOR INDUCING DIFFERENTIATION OF PRIMATE PLURIPOTENT STEM CELLS INTO OVARIAN SOMATIC CELL-LIKE CELLS Non-Final OA KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
18003737 METHOD FOR PRODUCING CARTILAGE TISSUE Non-Final OA NISSAN CHEMICAL CORPORATION
18018787 IN VITRO DIFFERENTIATION OF PANCREATIC ENDOCRINE CELLS Non-Final OA VERTEX PHARMACEUTICALS INCORPORATED
17784735 SYSTEM FOR DETECTING EXTRACELLULAR PURINERGIC RECEPTOR LIGAND, AND NON-HUMAN ANIMAL HAVING THE SYSTEM INTRODUCED THEREINTO Final Rejection Chugai Seiyaku Kabushiki Kaisha
18006684 COMPOSITION FOR PREVENTING HEARING LOSS CONTAINING MESENCHYMAL STEM CELLS OR EXOSOMES DERIVED THEREFROM AS ACTIVE INGREDIENT Non-Final OA UNIVERSITY INDUSTRY FOUNDATION, YONSEI UNIVERSITY WONJU CAMPUS
17606414 COMPOSITIONS USEFUL FOR TREATMENT OF POMPE DISEASE Non-Final OA Amicus Therapeutics, Inc.
18278343 MANUFACTURING METHOD OF ARTIFICIAL SKIN USING CELLS DIFFERENTIATED FROM INDUCED PLURIPOTENT STEM CELLS Non-Final OA CLECELL, CO. LTD.
17292296 USE OF ECM1 GENE-KNOCKOUT MOUSE IN SCREENING OF ANTI-HEPATIC FIBROSIS DRUG Final Rejection CENTER FOR EXCELLENCE IN MOLECULAR CELL SCIENCE, CHINESE ACADEMY OF SCIENCES
17600928 CRYOPRESERVATION AND CELL CULTURE MEDIA Final Rejection Akron BioProducts LLC
18031877 CHEMICAL CULTURE SYSTEM AND USE THEREOF Non-Final OA IREGENE THERAPEUTICS LTD
17999288 SERUM-FREE INDUCTION METHOD FOR SENSORY NEURON CELL Non-Final OA IREGENE THERAPEUTICS LTD
18034780 METHOD FOR THE GENERATION OF NEUROSPHERES Non-Final OA KUGELMEIERS LTD.
18296158 BIOINK CONTAINING SELF-ASSEMBLING PEPTIDES Non-Final OA L’ECOLE SUPERIEURE DE CHIMIE, PHYSIQUE, ELECTRONIQUE DE LYON (CPE Lyon)
18246744 COMPOSITIONS AND METHODS FOR INCREASING STEM CELL FUNCTION Non-Final OA LUDWIG INSTITUTE FOR CANCER RESEARCH LTD

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