Prosecution Insights
Last updated: May 29, 2026

Examiner: HILL, KEVIN KAI

Tech Center 1600 • Art Units: 1631 1633 1638 1687

This examiner grants 36% of resolved cases

Performance Statistics

36.2%
Allow Rate
-23.8% vs TC avg
923
Total Applications
+33.4%
Interview Lift
1355
Avg Prosecution Days
Based on 854 resolved cases, 2023–2026

Rejection Statute Breakdown

0.6%
§101 Eligibility
7.3%
§102 Novelty
73.0%
§103 Obviousness
5.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17965377 ENGINEERING STEM CELL T CELLS WITH MULTIPLE T CELL RECEPTORS Final Rejection The Regents of the University of California
17800872 IN-SERIES SYNTHETIC RECEPTOR AND-GATE CIRCUITS FOR EXPRESSION OF A THERAPEUTIC PAYLOAD BY ENGINEERED CELLS Non-Final OA The Regents of the University of California
17775236 METHODS AND COMPOSITIONS RELATING TO SELECTIVE INTRACELLULAR DELIVERY OF CD38 INHIBITORS Final Rejection Ohio State Innovation Foundation
17786347 COMPOSITIONS AND METHODS FOR THE TREATMENT OF HEMOGLOBINOPATHIES Non-Final OA Novartis AG
17261790 COMPOSITIONS AND METHODS INVOLVING TRANSFORMING EXTRACELLULAR VESICLES Final Rejection MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
18449940 DEAD GUIDES FOR CRISPR TRANSCRIPTION FACTORS Non-Final OA Massachusetts Institute of Technology
17687246 COMPOSITION AND METHODS OF GENOME EDITING OF B-CELLS Final Rejection DANA-FARBER CANCER INSTITUTE, INC.
18567470 Tissue Extracts and Related Methods Non-Final OA ALLOSOURCE
18008422 USE OF RECOMBINANT HUMAN ACID SPHINGOMYELINASE TO IMPROVE SKELETAL MYOFIBER REPAIR Final Rejection CHILDREN'S NATIONAL MEDICAL CENTER
17056749 IMPROVED CELL THERAPY COMPOSITIONS FOR HEMATOPOIETIC STEM CELL TRANSPLANT PATIENTS Non-Final OA CHILDREN'S NATIONAL MEDICAL CENTER
17905407 CRISPR/CAS9 SYSTEM FOR MULTISTRAIN HIV-1 TREATMENT Final Rejection Board of Regents of the University of Nebraska
18340417 GENOME-EDITED INVARIANT NATURAL KILLER T (INKT) CELLS FOR THE TREATMENT OF HEMATOLOGIC MALIGNANCIES Non-Final OA Washington University
18448811 COMPOSITIONS AND METHODS FOR ENHANCING GAMMA DELTA T CELLS IN THE GUT Non-Final OA KING'S COLLEGE LONDON
17756138 AKT INHIBITORS FOR ENHANCING CHIMERIC T CELL PERSISTENCE Final Rejection H. Lee Moffitt Cancer Center and Research Institute, Inc.
17907121 Targeted Destruction of Viral RNA by CRISPR-Cas13 Non-Final OA University of Rochester
17776569 COMPOSITIONS AND USES THEREOF FOR TREATING, PROGNOSING AND DIAGNOSING PULMONARY HYPERTENSION Non-Final OA UNIVERSITY OF PITTSBURGH-OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
17774848 METHOD FOR PRODUCING CYTOTOXIC EFFECTOR MEMORY T-CELLS FOR CAR T-CELL TREATMENT OF CANCER Final Rejection BAYLOR COLLEGE OF MEDICINE
17910459 DUAL-TARGETING CHIMERIC ANTIGEN RECEPTOR MODIFIED T CELLS COMPRISING IL-13 AND CHLOROTOXIN FOR CANCER TREATMENT Non-Final OA City of Hope
17842225 METHODS FOR TREATING EYE DISEASE Non-Final OA The United States Government as Represented by the Department of Veterans Affairs
17612465 COMPOSITIONS AND METHODS FOR THE TREATMENT OF DBA USING GATA1 GENE THERAPY Final Rejection THE CHILDREN'S MEDICAL CENTER CORPORATION
17837093 THERAPEUTIC CELL COMPOSITIONS AND METHODS OF MANUFACTURING AND USE THEREOF Final Rejection CREATE Medicines, Inc.
17648247 METHODS FOR MODULATING THE FUNCTION OF BIOLOGICAL REGULATORY NETWORKS IN HEALTH AND DISEASE BY EXPLOITING THEIR MEMORY PROPERTIES Non-Final OA Trustees of Tufts College
18476065 Method for Producing Stem Cell Clones Suitable for Induction of Differentiation into Somatic Cells Non-Final OA Megakaryon Corporation
18537754 SELECTION BY ESSENTIAL-GENE KNOCK-IN Non-Final OA Editas Medicine, Inc.
18009320 CHIMERIC ANTIGEN RECEPTOR CELL Final Rejection UCL Business Ltd
16470933 THERAPEUTIC CELLS Final Rejection UCL Business Ltd
18501621 ADMINISTRATION OF TUMOR INFILTRATING LYMPHOCYTES WITH MEMBRANE BOUND INTERLEUKIN 15 TO TREAT CANCER Non-Final OA OBSIDIAN THERAPEUTICS, INC.
16631861 METHODS AND COMPOSITIONS FOR TREATING ADDICTIONS Final Rejection BAR ILAN UNIVERSITY
17997103 REPEAT DOSING OF HYPOIMMUNOGENIC CELLS Non-Final OA Sana Biotechnology, Inc.
17901424 TREATMENT OF EXCESSIVE NEOVASCULARIZATION Final Rejection Mesoblast, Inc.

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