Prosecution Insights
Last updated: April 19, 2026

Examiner: SHIBUYA, MARK LANCE

Tech Center 1600 • Art Units: 1624 1631 1641 1677 1678

This examiner grants 32% of resolved cases

Performance Statistics

32.3%
Allow Rate
-27.7% vs TC avg
186
Total Applications
+24.9%
Interview Lift
1375
Avg Prosecution Days
Based on 158 resolved cases, 2023–2026

Rejection Statute Breakdown

2.9%
§101 Eligibility
18.1%
§102 Novelty
38.2%
§103 Obviousness
27.0%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18317772 METHODS OF TREATING METACHROMATIC LEUKODYSTROPHY Non-Final OA Genzyme Corporation
18279936 METHODS FOR IMPROVING EARLY EMBRYO DEVELOPMENT Non-Final OA SHANDONG UNIVERSITY
18143902 VARIANT ADENO-ASSOCIATED VIRUS (AAV) CAPSID POLYPEPTIDES AND GENE THERAPEUTICS THEREOF FOR TREATMENT OF HEARING LOSS Non-Final OA Eli Lilly and Company
16487517 METHODS OF PHOTOCHEMICAL TREATMENT FOR WOUND HEALING Non-Final OA The General Hospital Corporation
17907510 GENOME ENGINEERING USING CRISPR RNA-GUIDED INTEGRASES Final Rejection THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK
17920313 METHODS FOR GENERATION OF MOUSE AND HUMAN URETERIC BUD ORGANOIDS AND COLLECTING DUCT ORGANOIDS Non-Final OA University of Southern California
18296895 Protein Tyrosine Phosphatase 1B Inhibited Neutrophils, Neutrophil-Dendritic Cell Hybrids and Uses Thereof Non-Final OA WISCONSIN ALUMNI RESEARCH FOUNDATION
18257534 Chemically Defined Serum Albumin Substitutes Non-Final OA Life Technologies Corporation
17919052 ENHANCED EFFECTS OF GENE-IMMUNOTHERAPY AND IMMUNOSUPPRESSANTS IN MULTIPLE SCLEROSIS Non-Final OA University of Florida Research Foundation, Incorporated
18298882 COMBINATION TREATMENT Non-Final OA Boehringer Ingelheim International GmbH
18568061 EXOSOME PRODUCTION PROMOTING AGENT AND EXOSOME PRODUCTION PROMOTING METHOD Non-Final OA FULLSTEM CO., LTD.
18277394 GENETICALLY MODIFIED NON-HUMAN ANIMAL WITH HUMAN OR CHIMERIC CD3 GENES Non-Final OA Biocytogen Pharmaceuticals (Beijing) Co., Ltd.
18276593 RECONSTITUTION OF EXTRACELLULAR MATRIXES FOR MUSCULOSKELETAL JOINT TISSUE REPAIR USING BIOMIMETIC BIOLOGIC AND SYNTHETIC FACTORS Non-Final OA Rhode Island Hospital
18554136 Pancreatic Islets as Protein Factories Non-Final OA BIOCRINE AB
18246471 PROCESS FOR PRODUCING CULTURED RED BLOOD CELLS Non-Final OA Safi Biotherapeutics, Inc.
18260406 GENETICALLY-MODIFIED PLURIPOTENT STEM CELLS AND DERIVED NATURAL KILLER CELLS AND METHODS FOR PRODUCING THE SAME Non-Final OA NUWACELL BIOTECHNOLOGIES CO., LTD.
17596493 ARTIFICIAL ANTIGEN-SPECIFIC IMMUNOREGULATORY T (AIRT) CELLS Non-Final OA Benaroya Research Institute at Virginia Mason
18001462 3D CULTURE OF MESENCHYMAL LINEAGE PRECURSOR OR STEM CELLS Final Rejection MESOBLAST INTERNATIONAL SÁRL
18092495 MAMMALIAN LIVESTOCK PLURIPOTENT STEM CELLS FROM DELAYED EMBRYOS Final Rejection Accellta Ltd.
18010044 PREDICTIVE RESPONSE BIOMARKER DISCOVERY PROCESS Non-Final OA HIFIBIO (HK) LIMITED
17628971 PRECISE INTEGRATION USING NUCLEASE TARGETED IDLV Non-Final OA UNIVERSITE D'EVRY VAL D'ESSONNE
17911112 Cell Culture, Method for Evaluating Cell Culture, Method for Producing Cell Culture, and Marker for Use in Evaluation of Chondroid Tissue Formation Property Non-Final OA CellSeed Inc.
17766646 HELPER PLASMID-BASED GUTLESS ADENOVIRUS PRODUCTION SYSTEM Final Rejection GENENMED CO., LTD.

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