Prosecution Insights
Last updated: October 27, 2026

Todd Matthew Epstein, USPTO Patent Examiner

Listed by the USPTO as EPSTEIN, TODD MATTHEW

Tech Center 1600 • Art Units: 1652 1699

This examiner grants 61% of resolved cases

Analysis

EPSTEIN, TODD MATTHEW examines in tech center 1600 and art unit 1652. The profile covers 564 resolved cases, with an allowance rate of 60.8%. The median time to allowance is 1008 days. The case volume provides meaningful historical context, while the allowance rate shows that more than half of the recorded matters reached allowance.

The interview lift is 43.6%, a strong positive association with allowance outcomes. Evonik Operations GmbH, Novozymes A/S, and CJ CheilJedang Corporation are the listed top companies. The top firms are MARSHALL, GERSTEIN & BORUN LLP, WOLF GREENFIELD & SACKS, P.C., and AMSTER, ROTHSTEIN & EBENSTEIN LLP. Counsel may place interviews prominently in a prosecution plan when they can clarify the examiner’s concerns.

Written from this page's own data; every figure is computed from USPTO records and verified before publication.

Performance Statistics

60.8%
Allow Rate
+0.8% vs TC avg
614
Total Applications
+43.6%
Interview Lift
1008
Avg Prosecution Days
Based on 564 resolved cases, 2023–2026

Rejection Statute Breakdown

7.6%
§101 Eligibility
14.6%
§102 Novelty
31.6%
§103 Obviousness
31.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18847615 L-AMINO ACID-PRODUCING MICROORGANISM HAVING WEAKENED CARBAMOYL PHOSPHATE SYNTHASE ACTIVITY, AND L-AMINO ACID PRODUCTION METHOD USING SAME Non-Final OA CJ CHEILJEDANG CORPORATION
18591161 FABRIC AND HOME CARE PRODUCT COMPRISING CATIONIC SOIL RELEASE POLYMER AND LIPASE ENZYME Non-Final OA The Procter & Gamble Company
18252131 POLY(3-HYDROXYALKANOATE) PRODUCTION METHOD Non-Final OA KANEKA CORPORATION
18278735 Tropane Alkaloid Transporters and Methods of Making Tropane Alkaloids Using the Same Non-Final OA THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
18692976 Method for Promoting Production of Exopolysaccharide by Bifidobacterium Bacteria Final Rejection TOHOKU UNIVERSITY
17797701 ADENINE BASE EDITORS AND USES THEREOF Non-Final OA President and Fellows of Harvard College
18869988 IMPROVED BIOTECHNOLOGICAL METHOD FOR PRODUCING GUANIDINO ACETIC ACID (GAA) BY USING NADH-DEPENDENT DEHYDROGENASES Non-Final OA Evonik Operations GmbH
17042788 METHOD OF OBTAINING A MICROBIAL OIL AND A METHOD OF REDUCING EMULSION BY MAINTAINING A LOW CONCENTRATION OF CARBOHYDRATE Non-Final OA Evonik Operations GmbH
17788058 MYCOSPORINE-LIKE AMINO ACID-PRODUCING MICROORGANISM AND METHOD FOR PRODUCTION OF MYCOSPORINE-LIKE AMINO ACIDS BY USING SAME Final Rejection Seoul National University R&DB Foundation
18028037 METHOD FOR PRODUCING 3-HYDROXYPROPIONIC ACID Non-Final OA LG CHEM, LTD.
18282215 ENGINEERED BOTULINUM NEUROTOXIN A PROTEASE DOMAIN WITH IMPROVED EFFICACY Non-Final OA Children's Medical Center Corporation
16980250 INACTIVATED YEAST AND YEAST PRODUCT FOR IMPROVING FERMENTATION YIELD Non-Final OA DANSTAR FERMENT AG
18607109 CELLOBIOHYDROLASE VARIANTS AND POLYNUCLEOTIDES ENCODING SAME Final Rejection Novozymes A/S
18052489 PROTEASE VARIANTS AND POLYNUCLEOTIDES ENCODING SAME Final Rejection Novozymes A/S
18815248 METHOD TO PRODUCE ENANTIOMERS OF UNDECAVERTOL Final Rejection GIVAUDAN SA
18855098 METHODS TO PRODUCE ACETYLATED AND NON-ACETYLATED GLYCOLIPID AMPHIPHILES Non-Final OA Universiteit Gent
18042867 STARCH BIOSYNTHESIS METHOD Final Rejection TIANJIN INSTITUTE OF INDUSTRIAL BIOTECHNOLOGY, CHINESE ACADEMY OF SCIENCES

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Frequently Asked Questions

What is examiner Todd Matthew Epstein's allowance rate?

60.8% of resolved applications examined by Todd Matthew Epstein were allowed (564 resolved cases), compared with 53.5% across Art Unit 1652 over the last five years.

Does an interview help with examiner Todd Matthew Epstein?

This examiner's interview lift is +43.6 percentage points: the difference in allowance rate between resolved applications that had an examiner interview and those that did not.

How long does examiner Todd Matthew Epstein take to allow a patent?

Applications allowed by Todd Matthew Epstein took 1,008 days on average from filing to allowance.

Which art unit does examiner Todd Matthew Epstein work in?

Todd Matthew Epstein examines applications in Art Unit 1652 in Tech Center 1600 (Biotechnology & Pharmaceuticals).

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