Prosecution Insights
Last updated: April 19, 2026

Examiner: BERKE-SCHLESSEL, DAVID W

Tech Center 1600 • Art Units: 1638 1651

This examiner grants 66% of resolved cases

Performance Statistics

66.2%
Allow Rate
+6.2% vs TC avg
771
Total Applications
+32.5%
Interview Lift
1115
Avg Prosecution Days
Based on 731 resolved cases, 2023–2026

Rejection Statute Breakdown

8.1%
§101 Eligibility
19.5%
§102 Novelty
34.4%
§103 Obviousness
24.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18005178 APTAMER-BASED POINT-OF-CARE ASSAY DEVICES AND METHODS Final Rejection The Regents of the University of California
18557772 HYPERSIALYLATING CELLS Non-Final OA Novartis AG
18292227 METHOD TO PRODUCE RETINYL ACETATE Non-Final OA DSM IP ASSETS B.V.
18103679 METHODS FOR TREATING EXACERBATIONS OF INFLAMMATORY RESPIRATORY DISEASES Non-Final OA Hoffmann-La Roche Inc.
18345803 DEVICE AND METHODS FOR MEASURING PLATELET-FIBRIN CLOT CONTRACTION KINETICS Non-Final OA University of Kentucky Research Foundation
18570470 CHITINOLYTIC ENZYME-BASED PLANT PROTECTION AGENTS Non-Final OA FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
18550546 SYSTEM AND METHOD FOR ONLINE DETECTION OF A POST-TRANSLATIONAL MODIFICATION OF A POLYPEPTIDE Non-Final OA AstraZeneca AB
18639238 ISOLATED HUMAN LUNG PROGENITOR CELLS AND USES THEREOF Non-Final OA THE GENERAL HOSPITAL CORPORATION
18277676 GUEST-HOST SUPRAMOLECULAR ASSEMBLY OF INJECTABLE HYDROGEL NANOFIBERS FOR CELL ENCAPSULATION Non-Final OA University of Virginia Patent Foundation
18469214 CANINE HEPATIC ORGANOIDS Non-Final OA Iowa State University Research Foundation, Inc.
18579230 AGENT FOR IMPROVING INTESTINAL FLORA Non-Final OA KEIO UNIVERSITY
18550496 METHOD FOR PRODUCING BRAIN ORGANOID INCLUDING AGGREGATED TAU PROTEIN Non-Final OA KEIO UNIVERSITY
18472931 3D MODELS FOR PREDICTING TREATMENT RESPONSES TO ALTERNATING ELECTRIC FIELDS Non-Final OA NOVOCURE GMBH
18486770 TREATMENT FOR METHAMPHETAMINE CARDIOVASCULAR DISEASE Non-Final OA Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
18286680 METHOD FOR DETECTING EXOPOLYSACCHARIDE Non-Final OA MEIJI CO., LTD.
18578768 Enzymes and Uses Thereof Non-Final OA Samsara Eco Pty Limited
18570546 New Microbial Diamine Oxidase Derived from Yarrowia Lipolytica for the Degradation of Biogenic Amines Non-Final OA UNIVERSITÄT HOHENHEIM
18554448 PHOSPHOKETOLASE VARIANTS AND METHODS OF USE Non-Final OA Genomatica, Inc.
18276954 Recombinant Human Acid Alpha-Glucosidase and Uses Thereof Final Rejection Amicus Therapeutics, Inc.
18551793 2-IMINOBIOTIN FOR USE IN THE TREATMENT OF STROKE Non-Final OA NEUROPHYXIA B.V.
18259671 PREDICTING EFFICACY OF OR RESISTANCE TO TREATMENT OF COLON CANCER Final Rejection 2cureX A/S
18269781 BIOSYSTEMS TO DETECT CHEMICAL CONTAMINANTS Non-Final OA FUNDACION AZTI/AZTI FUNDAZIOA
18250808 OSTEOGENIC COMPOSITION AND USE THEREOF Final Rejection MEGAKARYON CORPORATION
18004403 METHODS AND COMPOSITIONS FOR PRODUCING VIRAL FUSOSOMES Final Rejection FLAGSHIP PIONEERING INNOVATIONS V, INC.
18136213 MICROBIOTA RESTORATION THERAPY (MRT) COMPOSITIONS AND METHODS OF MANUFACTURE Non-Final OA FERRING MICROBIOME INC.
18025513 Methods for the Determination of Invasive Ability of Brain Tumour Cells and for the Diagnosis and Prognosis of Brain Tumour Final Rejection Institut Gustave Roussy
17910812 INTRACELLULAR SUBSTANCE INTRODUCTION AND EXTRACTION TECHNIQUE VIA COMPOSITE NANOTUBES Final Rejection Hynts Tech Corporation

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