Prosecution Insights
Last updated: May 29, 2026

Examiner: GEISBERT, WILLIAM ADDISON

Tech Center 1700 • Art Units: 1779

This examiner grants 28% of resolved cases

Performance Statistics

27.8%
Allow Rate
-37.2% vs TC avg
58
Total Applications
-29.4%
Interview Lift
1189
Avg Prosecution Days
Based on 18 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
3.4%
§102 Novelty
89.0%
§103 Obviousness
3.4%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18270322 METHOD FOR FLOTATION OF A SILICATE-CONTAINING IRON ORE Non-Final OA BASF SE
18015645 METHOD FOR FLOTATION OF A SILICATE-CONTAINING IRON ORE Non-Final OA BASF SE
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
17963112 WASTE FLUID WATER RECOVERY SYSTEMS Final Rejection Hamilton Sundstrand Corporation
17767814 REVERSE OSMOSIS APPARATUS AND METHOD THEREOF Non-Final OA NANYANG TECHNOLOGICAL UNIVERSITY
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.
18149080 Method of Removing Organic Pollutants in Water by Zero-Valent Iron Enhanced Hypochlorite Final Rejection Harbin Institute of Technology
17729940 METAL-ORGANIC FRAMEWORKS FOR p-Cresyl SULFATE ADSORPTION Non-Final OA Colorado State University Research Foundation
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
18366746 SYSTEM FOR REMOVING METALS FROM CONTAMINATED WASTE STREAMS AND METHODS OF USE THEREOF Non-Final OA Surfatas Corporation, 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
17658541 SYSTEM AND METHOD FOR ENHANCING THE EFFICIENCY OF FROTH FLOATION PROCESS FOR COAL BENEFICIATION Final Rejection Elixa Technologies Private Limited

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