Prosecution Insights
Last updated: May 29, 2026

Examiner: EPSTEIN, TODD MATTHEW

Tech Center 1600 • Art Units: 1652

This examiner grants 61% of resolved cases

Performance Statistics

60.6%
Allow Rate
+0.6% vs TC avg
589
Total Applications
+43.9%
Interview Lift
1002
Avg Prosecution Days
Based on 548 resolved cases, 2023–2026

Rejection Statute Breakdown

6.2%
§101 Eligibility
12.8%
§102 Novelty
53.0%
§103 Obviousness
11.1%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17797701 ADENINE BASE EDITORS AND USES THEREOF Final Rejection President and Fellows of Harvard College
17383352 HOST CELLS AND METHODS FOR PRODUCING HYDROXYLATED METHYL KETONE COMPOUNDS Non-Final OA The Regents of the University of California
18267483 AMYCOLATOPSIS STRAINS FOR VANILLIN PRODUCTION WITH SUPPRESSED VANILLIC ACID FORMATION Non-Final OA BASF SE
18267147 BIOSYNTHESIS OF VANILLIN FROM ISOEUGENOL Non-Final OA BASF SE
18123943 METHOD TO PRODUCE BRANCHED-CHAIN POLYHYDROXYALKANOATES AND BRANCHED-CHAIN 3-HYDROXYACIDS FROM GLUCOSE Non-Final OA Alliance for Sustainable Energy, LLC
18692976 Method for Promoting Production of Exopolysaccharide by Bifidobacterium Bacteria Non-Final OA TOHOKU UNIVERSITY
17788058 MYCOSPORINE-LIKE AMINO ACID-PRODUCING MICROORGANISM AND METHOD FOR PRODUCTION OF MYCOSPORINE-LIKE AMINO ACIDS BY USING SAME Non-Final OA Seoul National University R&DB Foundation
18869988 IMPROVED BIOTECHNOLOGICAL METHOD FOR PRODUCING GUANIDINO ACETIC ACID (GAA) BY USING NADH-DEPENDENT DEHYDROGENASES Non-Final OA Evonik Operations GmbH
17775331 Polypeptide Having 4-Aminobenzoic Acid Hydroxylation Activity and Use Thereof Final Rejection Kao Corporation
18603163 POLYMERIZING ENZYMES FOR SEQUENCING REACTIONS Non-Final OA Quantum-Si Incorporated
16980250 INACTIVATED YEAST AND YEAST PRODUCT FOR IMPROVING FERMENTATION YIELD Non-Final OA DANSTAR FERMENT AG
18607109 CELLOBIOHYDROLASE VARIANTS AND POLYNUCLEOTIDES ENCODING SAME Non-Final OA Novozymes A/S
18568235 ENGINEERED MICROORGANISM FOR IMPROVED ETHANOL FERMENTATION Non-Final OA Novozymes A/S
18052489 PROTEASE VARIANTS AND POLYNUCLEOTIDES ENCODING SAME Non-Final OA Novozymes A/S
17781512 Alpha-Amylase Variants Non-Final OA Novozymes A/S
18254532 Thermostable Phytase Chimera Non-Final OA RHEINISCH-WESTFÄLISCHE TECHNISCHE HOCHSCHULE (RWTH) AACHEN
18039086 CYTIDINE DEAMINASE VARIANTS FOR BASE EDITING Non-Final OA CONSIGLIO NAZIONALE DELLE RICERCHE
18245450 CULTURE COMPOSITIONS AND METHODS OF THEIR USE FOR HIGH YIELD PRODUCTION OF VANILLIN Final Rejection AMYRIS, INC.
18522708 ENGINEERED SACCHAROMYCES CEREVISIAE STRAINS FOR PRODUCTION OF VANILLYLAMINE AND CAPSAICIN, AND CONSTRUCTION METHOD AND USE THEREOF Non-Final OA SHIHEZI UNIVERSITY
17697504 ALDEHYDE DEHYDROGENASE VARIANTS AND METHODS OF USE Non-Final OA Genomatica, Inc.
17720031 FLAVONOID AND ANTHOCYANIN BIOPRODUCTION USING MICROORGANISM HOSTS Final Rejection DEBUT BIOTECHNOLOGY, INC.
17765643 PROCESS FOR MANUFACTURING ORGANIC CHEMICALS AND/OR DISTILLATE HYDROCARBON FUELS FROM WASTE TEXTILES Final Rejection SHARETEX AB
18035889 MICROORGANISMS CAPABLE OF PRODUCING POLY(HIBA) FROM FEEDSTOCK Non-Final OA INDUSTRIAL MICROBES, INC.
18042867 STARCH BIOSYNTHESIS METHOD Non-Final OA TIANJIN INSTITUTE OF INDUSTRIAL BIOTECHNOLOGY, CHINESE ACADEMY OF SCIENCES
18042589 SYNTHETIC GROWTH ON ONE-CARBON SUBSTRATES Non-Final OA Mojia Biotech Pte. Ltd.

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