Prosecution Insights
Last updated: May 29, 2026

Examiner: ELLINGTON, MARRIAH C G

Tech Center 1700 • Art Units: 1773

This examiner grants 43% of resolved cases

Performance Statistics

42.9%
Allow Rate
-22.1% vs TC avg
60
Total Applications
+27.1%
Interview Lift
1210
Avg Prosecution Days
Based on 28 resolved cases, 2023–2026

Rejection Statute Breakdown

0.7%
§101 Eligibility
8.1%
§102 Novelty
85.9%
§103 Obviousness
5.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17834387 GRAPHENE-POLYAMIDE COMPOSITE MEMBRANES AND MICROPARTICLES, METHODS OF MANUFACTURE, AND METHODS OF USE Final Rejection University of Connecticut
17469046 FILTERING WATER BOTTLE Final Rejection HYDROS BOTTLE, LLC
17652617 FILTRATION FILTER Non-Final OA Murata Manufacturing Co., Ltd.
17606266 DIALYSIS SOLUTION REGENERATION METHOD Non-Final OA TORAY INDUSTRIES, INC.
17421757 MEMBRANE WITH IMMOBILIZED ANTICOAGULANT AND PROCESS FOR PRODUCING SAME Non-Final OA GAMBRO LUNDIA AB
18910483 Integrated Divalent Ion Precipitation And Bipolar Electrodialysis Reactor Final Rejection Ebb Carbon, Inc.
18008955 PURE WATER PRODUCTION METHOD Non-Final OA KURITA WATER INDUSTRIES LTD.
17927734 REVERSE OSMOSIS MEMBRANE PROCESSING METHOD Final Rejection KURITA WATER INDUSTRIES LTD.
18011031 CLOSED-LOOP, BIOREGENERATIVE WATER PURIFICATION SYSTEMS AND METHODS Final Rejection UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
17921202 ANAEROBIC MEMBRANE BIOREACTOR COUPLED WITH UV ADVANCED DISINFECTION PROCESS FOR WASTEWATER TREATMENT Final Rejection KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
18012013 COMPACT WATER FILTRATION DEVICE Non-Final OA FGWRS
17642909 MULTI-STAGE APPARATUS AND PROCESS FOR ADVANCED OXIDATION TREATMENT OF WASTEWATER Non-Final OA Nanjing University & Yancheng Academy of Environmental Protection Technology And Engineering
17632699 FILTRATION ASSEMBLY COMPRISING A FILTERING CARTRIDGE AND AN AUXILIARY DEVICE Final Rejection UFI FILTERS S.P.A.
17253407 Apparatus and Method for Producing Alkaline Water Non-Final OA WET HOLDINGS (GLOBAL) LIMITED
17331681 SYSTEMS AND METHODS FOR CONTROLLED DEVELOPMENT AND DELIVERY OF GAS AND LIQUID MIXTURES Non-Final OA ChartWater, LLC

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