Prosecution Insights
Last updated: April 19, 2026

Examiner: LEONARD, ARTHUR S

Tech Center 1600 • Art Units: 1631 1633 1643 1651

This examiner grants 51% of resolved cases

Performance Statistics

50.7%
Allow Rate
-9.3% vs TC avg
565
Total Applications
+51.2%
Interview Lift
1296
Avg Prosecution Days
Based on 503 resolved cases, 2023–2026

Rejection Statute Breakdown

3.5%
§101 Eligibility
17.5%
§102 Novelty
39.8%
§103 Obviousness
21.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
19041656 METHODS OF USING COMPOSITIONS COMPRISING SBI DOMAINS Final Rejection Helix Nanotechnologies Inc
17778064 METHOD FOR PROVIDING IMMUNE CELLS WITH ENHANCED FUNCTION Final Rejection CARTHERICS PTY. LTD.
18823429 COMPOSITIONS AND METHODS OF GENOME EDITING Non-Final OA EPIGENIC THERAPEUTICS PTE, LTD.
18406066 FANZORS ARE RNA-GUIDED NUCLEASES ENCODED IN EUKARYOTIC GENOMES Final Rejection Massachusetts Institute of Technology
18163253 Methods and Compositions to Target and Treat Macrophages Non-Final OA Massachusetts Institute of Technology
17865375 Programmable Modification of DNA Non-Final OA Massachusetts Institute of Technology
17580190 TUNABLE ENDOGENOUS PROTEIN DEGRADATION Final Rejection DANA-FARBER CANCER INSTITUTE, INC.
18372374 METHOD OF PRODUCING A CELL POPULATION COMPRISING AN AMNION-DERIVED MESENCHYMAL STEM CELL Non-Final OA KANEKA CORPORATION
17630774 CYTOSINE BASE-EDITING COMPOSITION AND USE OF SAME Final Rejection IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
18484667 METHODS AND COMPOSITIONS FOR ADAPTIVE IMMUNE MODULATION Non-Final OA THE TEXAS A&M UNIVERSITY SYSTEM
17756104 LARGE-SCALE COMBINED CAR TRANSDUCTION AND CRISPR GENE EDITING OF B CELLS Final Rejection BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
17755887 LARGE-SCALE COMBINED CAR TRANSDUCTION AND CRISPR GENE EDITING OF NK CELLS Final Rejection BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
17934501 METHODS FOR INDUCING SELECTIVE APOPTOSIS Final Rejection Baylor College of Medicine
18368130 Rat models for CMT2A that develop a progressive neuropathy Non-Final OA The Trustees of the University of Pennsylvania
17759905 COMPOSITIONS USEFUL FOR TREATING GM1 GANGLIOSIDOSIS Non-Final OA The Trustees of the University of Pennsylvania
18980456 Targeted CRISPR Delivery Platforms Final Rejection University of Massachusetts
18049724 COMPLEXES FOR GENE DELETION AND EDITING Non-Final OA UNIVERSITY OF MASSACHUSETTS
18036488 SALICYLIC ACID-INDUCIBLE GENE EXPRESSION COMPOSITIONS AND SYSTEMS FOR CELLS Non-Final OA UNIVERSITY OF HOUSTON SYSTEM
17911041 A MIXTURE OF MRNA TO ENHANCE THE POTENCY OF DENDRITIC CELLS Non-Final OA Vrije Universiteit Brussel
17954674 MODIFIED GRAFTS Non-Final OA Musculoskeletal Transplant Foundation
18486731 GENE THERAPY FOR THE REGENERATION OF CHONDROCYTES OR CARTILAGE TYPE CELLS Non-Final OA FIGENE, LLC
18003093 METHODS OF GENERATING AN ACTIVATION INDUCIBLE EXPRESSION SYSTEM IN IMMUNE CELLS Non-Final OA St. Jude Children's Research Hospital, Inc.
18613605 PROTEOLIPID VESICLES FORMULATED WITH FUSION ASSOCIATED SMALL TRANSMEMBRANE PROTEINS Final Rejection ENTOS PHARMACEUTICALS INC.
16098918 DNA Monoclonal Antibodies Targeting IL-6 and CD126 Final Rejection The Wistar Institute of Anatomy and Biology
18302962 SYNTHETIC ADENOVIRUSES TARGETING BONE TISSUE AND USES THEREOF Non-Final OA Salk Institute for Biological Studies
18176500 RECOMBINANT DGKK GENE FOR FRAGILE X SYNDROME GENE THERAPY Non-Final OA INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE
17742724 HYBRID NUCLEIC ACID MOLECULES AND THEIR USE Final Rejection INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE
18271715 METHOD FOR CULTURING HUMAN HEPATIC PARENCHYMAL CELL, CULTURED HUMAN HEPATIC PARENCHYMAL CELL, CULTURE MEDIUM AND METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING CULTURE SUPERNATANT OF HUMAN HEPATIC NONPARENCHYMAL CELL Non-Final OA JSR CORPORATION
17674378 INTRACELLULAR GENOMIC TRANSPLANT AND METHODS OF THERAPY Final Rejection The U.S.A., as Represented by the Secretary, Department of Health and Human Services
18158310 CELL Non-Final OA AUTOLUS LIMITED

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