Prosecution Insights
Last updated: April 19, 2026

Examiner: DRODGE, JOSEPH W

Tech Center 1700 • Art Units: 1652 1735 1758 1772 1773 1778 1797

This examiner grants 78% of resolved cases

Performance Statistics

78.2%
Allow Rate
+13.2% vs TC avg
2030
Total Applications
+38.4%
Interview Lift
1027
Avg Prosecution Days
Based on 1999 resolved cases, 2023–2026

Rejection Statute Breakdown

1.3%
§101 Eligibility
5.3%
§102 Novelty
48.6%
§103 Obviousness
21.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18402220 PROCESSING A FLUID EMULSION Non-Final OA Saudi Arabian Oil Company
18405173 METHOD AND DEVICE FOR MONITORING CHLORINE IN A POOL Non-Final OA Ecolab USA Inc.
18540970 METHODS AND SYSTEMS FOR ASSESSING CHROMATOGRAPHIC COLUMN INTEGRITY Non-Final OA Regeneron Pharmaceuticals, Inc.
18573865 CARBON REMOVAL FROM SEAWATER AND OTHER LIQUIDS USING PHOTOACTIVE COMPOUNDS Non-Final OA University of Washington
18440494 FLUORINATED FILTER MEMBRANE, FILTERS, AND METHODS Non-Final OA ENTEGRIS, INC.
17967017 ELECTROLYTIC REACTORS Non-Final OA Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
18278598 WATER TREATMENT METHOD, CONTROL APPARATUS, AND WATER TREATMENT SYSTEM Final Rejection Yokogawa Electric Corporation
18323996 SELECTIVE APPROACH TO SEPARATE AND CONCENTRATE RARE EARTH ELEMENTS Non-Final OA UNIVERSITY OF UTAH RESEARCH FOUNDATION
18239285 BIOCHAR-ENHANCED GRASS BLANKET FOR REMEDIATING CONTAMINATED SEDIMENT AND PREPARATION METHOD THEREOF, AND METHOD FOR REMEDIATING CONTAMINATED SEDIMENT Non-Final OA ZHEJIANG UNIVERSITY
18558877 MODULE FOR ATTRACTING AND DETECTING DEBRIS Non-Final OA SAFRAN AERO BOOSTERS
18542980 POROUS COMPOSITE Non-Final OA NGK INSULATORS, LTD.
18026787 PRODUCTION DEVICE FOR PH/REDOX POTENTIAL-ADJUSTED WATER Non-Final OA KURITA WATER INDUSTRIES LTD.
18822354 Destruction of PFAS Via an Oxidation Process and Apparatus Suitable for Transportation to Contaminated Sites Non-Final OA Revive Environmental Technology, LLC
18837411 METHOD FOR PRODUCING GELATINIZED STARCH DRY POWDER, GELATINIZED STARCH DRY POWDER, GELATINIZED BUCKWHEAT DRY POWDER, AND DEVICE FOR PRODUCING GELATINIZED STARCH DRY POWDER Non-Final OA Akihiro NISHIOKA
18570910 METHOD FOR SEPARATING AND QUANTIFYING SATURATED AND UNSATURATED DIALKYL KETONES Non-Final OA FUJI OIL HOLDINGS INC.
18573106 PURIFICATION OF OIL Non-Final OA SKF RECONDOIL AB
18573095 COMMERCIAL PURIFICATION METHOD FOR HIGH-PURITY BACTERIAL EXTRACELLULAR VESICLES Non-Final OA ROSETTA EXOSOME CO., LTD
18386974 FLUIDIZED BED SORTER Non-Final OA Rory Korathu-Larson, LLC
18287513 PROCESS FOR PRODUCING THIN JUICE FOR THE PRODUCTION OF SUGAR, PROCESS FOR PRODUCING SUGAR AND SUGAR PRODUCTION PLANT Non-Final OA PFEIFER & LANGEN IP GMBH
18485104 Shower System with a Filter Non-Final OA Eli ZHADANOV
18371954 NOZZLE Non-Final OA Crystal IS, Inc.
18133094 POINT-OF-USE LIQUID TREATMENT Non-Final OA Crystal IS, Inc.
18239697 ENHANCED MICROPLASTIC REMOVAL Non-Final OA TidalX AI Inc
18242548 COUNTERTOP WATER DISPENSING SYSTEM Non-Final OA Ningbo eastpure environmental technology co., Ltd
18264607 METHOD FOR USING TANGENTIAL FLOW ULTRAFILTRATION TECHNOLOGY TO PREPARE CONTROLLABLE HIGH CONCENTRATION SILK FIBROIN SOLUTION Non-Final OA FAVORSUN MEDICAL TECH. (SUZHOU) CO., LTD.
18229145 Novel flow features for self-cleaning concentric tubular electrochemical cells Non-Final OA Evoqua Water Technolgoies LLC
18357527 FLUID INTERCEPTION DEVICE FOR A MEDICAL CLEANING SYSTEM Non-Final OA W & H STERILIZATION S.r.l.
18271331 FLUIDIC SEPARATORS AND ASSOCIATED METHODS Non-Final OA Zaiput Flow Technologies LLC

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