Prosecution Insights
Last updated: April 19, 2026

Examiner: EPSTEIN, TODD MATTHEW

Tech Center 1600 • Art Units: 1652

This examiner grants 60% of resolved cases

Performance Statistics

59.9%
Allow Rate
At TC average
585
Total Applications
+44.6%
Interview Lift
1080
Avg Prosecution Days
Based on 541 resolved cases, 2023–2026

Rejection Statute Breakdown

6.4%
§101 Eligibility
15.9%
§102 Novelty
31.0%
§103 Obviousness
29.8%
§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
18869988 IMPROVED BIOTECHNOLOGICAL METHOD FOR PRODUCING GUANIDINO ACETIC ACID (GAA) BY USING NADH-DEPENDENT DEHYDROGENASES Non-Final OA Evonik Operations GmbH
18028005 MICROORGANISMS HAVING CAPABILITY OF PRODUCING 3-HYDROXYPROPIONIC ACID FROM GLUCOSE AND USES THEREOF Final Rejection LG CHEM, LTD.
18252131 POLY(3-HYDROXYALKANOATE) PRODUCTION METHOD Non-Final OA KANEKA CORPORATION
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
17775331 Polypeptide Having 4-Aminobenzoic Acid Hydroxylation Activity and Use Thereof Final Rejection Kao Corporation
18123943 METHOD TO PRODUCE BRANCHED-CHAIN POLYHYDROXYALKANOATES AND BRANCHED-CHAIN 3-HYDROXYACIDS FROM GLUCOSE Non-Final OA Alliance for Sustainable Energy, LLC
17911083 METHOD FOR PRODUCING L-TRYPTOPHAN THROUGH ENHANCEMENT OF PREPHENATE DEHYDRATASE ACTIVITY Non-Final OA CJ CHEILJEDANG 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
18331730 Compositions Comprising Polypeptides having Xylanase Activity and Polypeptides having Arabinofuronosidase Activity Non-Final OA NOVOZYMES A/S
18052489 PROTEASE VARIANTS AND POLYNUCLEOTIDES ENCODING SAME Non-Final OA Novozymes A/S
18039086 CYTIDINE DEAMINASE VARIANTS FOR BASE EDITING Non-Final OA CONSIGLIO NAZIONALE DELLE RICERCHE
18254532 Thermostable Phytase Chimera Non-Final OA RHEINISCH-WESTFÄLISCHE TECHNISCHE HOCHSCHULE (RWTH) AACHEN
17790923 COMPOSITIONS, SYSTEMS AND METHODS FOR PRODUCTION OF VALUE-ADDED CHEMICALS Final Rejection Solugen, Inc.
18245450 CULTURE COMPOSITIONS AND METHODS OF THEIR USE FOR HIGH YIELD PRODUCTION OF VANILLIN Final Rejection AMYRIS, INC.
18507504 ENZYME VARIANTS AND USES THEREOF Final Rejection SAMSARA ECO PTY LIMITED
18576607 A GENETICALLY ENGINEERED BACTERIUM AND A PREPARATION METHOD AND USE THEREOF Non-Final OA SYNAURA BIOTECHNOLOGY (SHANGHAI) CO., LTD.
18567890 Atranorin biosynthesis gene derived from lichens and uses thereof Non-Final OA INDUSTRY-ACADEMIC COOPERATION FOUNDATION OF SUNCHON NATIONAL UNIVERSITY
18492600 Methods of Production of Double Unsaturated Pheromones Using Metabolic Pathways Non-Final OA SEMIOPLANT AB
18042867 STARCH BIOSYNTHESIS METHOD Non-Final OA TIANJIN INSTITUTE OF INDUSTRIAL BIOTECHNOLOGY, CHINESE ACADEMY OF SCIENCES
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.
18042589 SYNTHETIC GROWTH ON ONE-CARBON SUBSTRATES Non-Final OA Mojia Biotech Pte. Ltd.

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