Prosecution Insights
Last updated: April 19, 2026

Examiner: NGUYEN, BOI-LIEN THI

Tech Center 1700 • Art Units: 1779 1787

This examiner grants 25% of resolved cases

Performance Statistics

25.0%
Allow Rate
-40.0% vs TC avg
97
Total Applications
+50.4%
Interview Lift
1409
Avg Prosecution Days
Based on 52 resolved cases, 2023–2026

Rejection Statute Breakdown

0%
§101 Eligibility
19.5%
§102 Novelty
49.5%
§103 Obviousness
30.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18469942 DESALINATION SYSTEM AND METHOD FOR DESALINATION OF WATER Non-Final OA KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
18231653 DEBRIS CONTROL SYSTEMS AND METHODS FOR SWIMMING POOLS AND SPAS Non-Final OA ZODIAC POOL SYSTEMS LLC
16318639 DIALYSIS MACHINE HAVING A CONTROL UNIT FOR CARRYING OUT A CONDITIONING OF THE DIALYSIS MEMBRANE Final Rejection FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
18704081 RECOVERING POLY(VINYL BUTYRAL) POLYMER Non-Final OA SOLUTIA INC.
17526342 Backflow preventer for water filtering equipment Final Rejection JUN HE TECHNOLOGY CO., LTD.
18631151 Peritoneal Dialysis Systems, Devices, and Methods Final Rejection NxStage Medical, Inc.
18283869 INTERMEDIATE POWER STORE FOR POWER GENERATING SYSTEMS Non-Final OA TECHNISCHE UNIVERSITÄT DARMSTADT
17251085 TREATMENT OF WASTEWATER WITH BIOREFRACTORY COMPOUNDS SUCH AS PULP MILL WASTEWATER Final Rejection BL TECHNOLOGIES, INC.
17281242 Control of TOC, Perchlorate and PFAS through Advanced Oxidation and Selective Ion Exchange Process Final Rejection Evoqua Water Technologies LLC
17400917 WATER MANAGEMENT SYSTEM FOR ORE MINING OPERATION Final Rejection EXTRAKT PROCESS SOLUTIONS, LLC
17627935 FLOTATION CELL Non-Final OA Metso Outotec Finland Oy
17415339 METHOD AND ARRANGEMENT FOR PROCESS WATER TREATMENT Non-Final OA Metso Outotec Finland Oy
17265003 Flotation Cell Non-Final OA Metso Outotec Finland Oy
17797699 WASTEWATER TREATMENT SYSTEMS AND METHODS Final Rejection WASE LTD
17778697 MACHINE, SYSTEM AND METHOD FOR THE FILTRATION, DISINFECTION AND PURIFICATION OF FUEL IN CONTAMINATED TANKS Non-Final OA FDR PATENT, S.L.
17592692 REACTOR ALLOWING THE CONTINUOUS FILTRATION OF LIQUID FLOWING THROUGH A FILTER WITH IN SITU ELECTROCHEMICAL REGENERATION OF THE FILTER Non-Final OA UNIVERSITÉ GUSTAVE EIFFEL
17622162 METHOD FOR REDISTRIBUTING A FLAKE MATERIAL INTO AT LEAST TWO FLAKE SIZE FRACTIONS Non-Final OA Grafren AB
17442142 SEWAGE TREATMENT METHOD Non-Final OA EVOCRA PTY LIMITED
17437354 WATER RECYCLING SYSTEM Final Rejection SAFE FOODS CORPORATION
17274000 RAPID SEPARATION AND RECOVERY OF PATHOGENS FROM FOOD SAMPLES BY MICROFILTRATION ASSISTED COUNTERFLOW ELUTRIATION (MACE) Final Rejection PathOTrak Inc.
16169199 APPARATUS AND METHODS TO REMOVE TOXINS FROM BLOOD BY PLASMAPHERESIS Final Rejection DD Innovations Lab, LLC

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