Prosecution Insights
Last updated: April 19, 2026

Examiner: GEISBERT, WILLIAM ADDISON

Tech Center 1700 • Art Units: 1779

This examiner grants 20% of resolved cases

Performance Statistics

20.0%
Allow Rate
-45.0% vs TC avg
56
Total Applications
-21.4%
Interview Lift
1184
Avg Prosecution Days
Based on 15 resolved cases, 2023–2026

Rejection Statute Breakdown

1.1%
§101 Eligibility
23.5%
§102 Novelty
55.9%
§103 Obviousness
18.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
17656383 POLYIONIC NANOCLAYS Non-Final OA THE CURATORS OF THE UNIVERSITY OF MISSOURI
19220839 INTEGRATION OF WATER TREATMENT AND WET AIR REGENERATION METHODS FOR THE DESTRUCTION OF PER- AND POLYFLUORINATED ALKYL SUBSTANCES (PFAS) Final Rejection Lummus Technology LLC
18253192 SYSTEMS FOR REMOVING EXPLOSIVES AND OTHER COEXISTING CONTAMINANTS FROM WATER AND RELATED METHODS Non-Final OA Arizona Board of Regents on Behalf of Arizona State University
17963112 WASTE FLUID WATER RECOVERY SYSTEMS Final Rejection Hamilton Sundstrand Corporation
17767814 REVERSE OSMOSIS APPARATUS AND METHOD THEREOF Final Rejection NANYANG TECHNOLOGICAL UNIVERSITY
18011297 WATER TREATMENT APPARATUS AND WATER TREATMENT METHOD Non-Final OA ORGANO CORPORATION
18011322 WATER TREATMENT APPARATUS, APPARATUS FOR PRODUCING ULTRAPURE WATER AND WATER TREATMENT METHOD Non-Final OA ORGANO CORPORATION
17998686 METHOD FOR WATER PURIFICATION AND SANITIZATION Final Rejection YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREW UNIVERSITY OF JERUSALEM LTD.
17729940 METAL-ORGANIC FRAMEWORKS FOR p-Cresyl SULFATE ADSORPTION Non-Final OA Colorado State University Research Foundation
18149080 Method of Removing Organic Pollutants in Water by Zero-Valent Iron Enhanced Hypochlorite Final Rejection Harbin Institute of Technology
17892347 MULTI-STAGE VACUUM MEMBRANE DISTILLATION SYSTEM AND PROCESS Non-Final OA King Fahd University of Petroleum & Minerals
17965126 BIOFILM INHIBITION SYSTEM BASED ON UV-LEDS Non-Final OA U.S. DEPARTMENT OF ENERGY
18029628 METHOD FOR TREATING A WASTEWATER EFFLUENT BY DENSIFYING SLUDGE IN A SEQUENCING BATCH REACTOR Final Rejection SUEZ INTERNATIONAL
17946452 REDOX SHUTTLE ASSISTED ELECTRODEIONIZATION Non-Final OA Genesee Valley Innovations, LLC
17946003 CATION EXCHANGE MEMBRANES FROM STRUCTURED ORGANIC FILMS AND METHODS THEREOF Non-Final OA Genesee Valley Innovations, LLC
17756290 WATER PURIFICATION CARTRIDGE SYSTEM AND METHOD Final Rejection PENTAIR, INC.
18011869 METHOD OF DETECTING ENDOTOXIN, ENDOTOXIN DETECTION DEVICE, PURIFIED WATER PRODUCTION FACILITY, INJECTION WATER PRODUCTION FACILITY, METHOD OF PRODUCING PURIFIED WATER AND METHOD OF PRODUCING INJECTION WATER Non-Final OA Sophia School Corporation
17983494 SWIRL-TYPE DEMULSIFICATION AND DEHYDRATION DEVICE FOR OIL-WATER EMULSION Non-Final OA CHONGQING TECHNOLOGY AND BUSINESS UNIVERSITY
17980515 USE OF ELECTROCHEMICAL OXIDATION FOR TREATMENT OF PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN WASTE GENERATED FROM SORBENT AND RESIN REGENERATION PROCESSES Final Rejection AECOM
17976983 MAGNETIC TOOL AND CLEANING METHOD Non-Final OA Lone Star Magnetics, LLC
17658541 SYSTEM AND METHOD FOR ENHANCING THE EFFICIENCY OF FROTH FLOATION PROCESS FOR COAL BENEFICIATION Final Rejection Elixa Technologies Private Limited
17541496 SYSTEM AND METHOD OF EVAPORATIVE COOLING WATER MANAGEMENT Final Rejection FTD SOLUTIONS INC.

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