Prosecution Insights
Last updated: April 19, 2026

Examiner: CHESTNUT, BARRY A

Tech Center 1600 • Art Units: 1648 1671 1672

This examiner grants 73% of resolved cases

Performance Statistics

73.1%
Allow Rate
+13.1% vs TC avg
747
Total Applications
+5.8%
Interview Lift
911
Avg Prosecution Days
Based on 717 resolved cases, 2023–2026

Rejection Statute Breakdown

4.2%
§101 Eligibility
21.0%
§102 Novelty
42.0%
§103 Obviousness
22.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18277186 METHODS AND RELATED ASPECTS FOR DETECTING DISEASES, CONDITIONS, OR DISORDERS IN SUBJECTS USING EXTRACELLUAR VESICLES Non-Final OA THE JOHNS HOPKINS UNIVERSITY
18275540 CATALYTIC AMPLIFICATION BY TRANSITION-STATE MOLECULAR SWITCHES FOR DIRECT AND SENSITIVE DETECTION OF SARS-COV-2 Non-Final OA National University of Singapore
18282390 METHODS FOR DETERMINATION OF TRANSPLANT REJECTION Non-Final OA Natera, Inc.
18338128 SEQUENCING MICROBIAL CELL-FREE NUCLEIC ACIDS TO DETECT INFLAMMATION, SECONDARY INFECTION, AND DISEASE SEVERITY Non-Final OA University of Pittsburgh - Of the Commonwealth System of Higher Education
18480009 USE AND DETECTION METHOD OF FLAVIVIRUS PROTEIN MICROARRAY Non-Final OA NATIONAL CHENG KUNG UNIVERSITY
18026943 PIV5-BASED COVID-19 VACCINE Final Rejection UNIVERSITY OF GEORGIA RESEARCH FOUNDATION, INC.
18474895 HBV DIAGNOSTIC, PROGNOSTIC, AND THERAPEUTIC METHODS AND PRODUCTS Non-Final OA Abbott Laboratories
18506002 TRANSGLUTAMINASE SUBSTRATES FOR LABELING Non-Final OA Roche Diagnostics Operations, Inc.
18247565 Cell culture process for producing RSV F protein Non-Final OA Pfizer Inc.
18473064 ORTHOPOXVIRUS SEROLOGY ASSAYS Non-Final OA Meso Scale Technologies, LLC.
18350071 Multiplex Assay for Simultaneous Detection of Equine Group A and B Rotaviruses and Genotyping of Equine Rotavirus A G3 And G14 Non-Final OA Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
18251739 METHODS AND COMPOSITIONS USING NON-INVASIVE PLASMA GLYCOMIC AND METABOLIC BIOMARKERS OF POST-TREATMENT CONTROL OF HIV Non-Final OA The Wistar Institute of Anatomy and Biology
18286705 EPSTEIN-BARR VIRUS MRNA VACCINES Non-Final OA ModernaTX, Inc.
18282097 THERAPEUTIC USE OF SARS-COV-2 MRNA DOMAIN VACCINES Non-Final OA ModernaTX, Inc.
17576974 LOOP-MEDIATED ISOTHERMAL AMPLIFICATION (LAMP) ON A SOLID-PHASE MEDIUM Non-Final OA Raytheon BBN Technologies, Corp.
18267241 IMMUNOGENIC PEPTIDE Non-Final OA UCL BUSINESS LTD.
18282385 FOLLICULAR HELPER T (TFH) CELLS SPECIFIC TO SARS-COV-2 VIRUS Non-Final OA KOTAI Biotechnologies, Inc.
17995158 Stabilized Vaccine Compositions Non-Final OA Janssen Vaccines & Prevention B.V.
18213136 COVID MULTI-BIOME Non-Final OA Microbiota I - Center (Magic) Limited
18258562 METHOD FOR DETERMINING ACTIVE SARS-COV-2-INFECTIONS Non-Final OA CEINGE BIOTECNOLOGIE AVANZATE FRANCO SALVATORE S.C. A R.L.
18113193 COMPOSITIONS AND METHODS FOR STABILIZING FLAVIVIRUSES WITH IMPROVED FORMULATIONS Non-Final OA TAKEDA VACCINES, INC.
18002231 NOVEL IMMUNE ADJUVANT AND VACCINE COMPOSITION INCLUDING THE SAME Non-Final OA REPUBLIC OF KOREA (ANIMAL AND PLANT QUARANTINE AGENCY)
17991525 COMPOSITIONS AND DEVICES FOR VACCINE RELEASE AND USES THEREOF Non-Final OA VAXESS TECHNOLOGIES, INC.
17920625 Suprastructure Comprising Modified Influenza Hemagglutinin With Reduced Interaction With Sialic Acid Non-Final OA Brian J. Ward

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