Prosecution Insights
Last updated: April 19, 2026

Examiner: PATEL, PRANAV N

Tech Center 1700 • Art Units: 1777

This examiner grants 68% of resolved cases

Performance Statistics

68.0%
Allow Rate
+3.0% vs TC avg
682
Total Applications
+22.2%
Interview Lift
1105
Avg Prosecution Days
Based on 637 resolved cases, 2023–2026

Rejection Statute Breakdown

0.4%
§101 Eligibility
17.0%
§102 Novelty
50.9%
§103 Obviousness
26.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18475317 REMOVING BIVALENT IONS FROM PRODUCED WATER Non-Final OA Saudi Arabian Oil Company
19309370 Cell Processing System And Method With Preliminary Process Evaluation Non-Final OA Fenwal, Inc.
18024626 AFFINITY CHROMATOGRAPHY DEVICES CONTAINING A HEAT TREATED FIBRILLATED POLYMER MEMBRANE AND MANIFOLDS CONTAINING THE SAME Non-Final OA W. L. GORE & ASSOCIATES, INC.
18284171 Gas Separation Membranes Non-Final OA Fujifilm Corporation
18335615 ENHANCED FOAM FRACTIONATION OF OIL PHASE FROM AQUEOUS/OIL MIXED PHASE VIA INCREASED VISCOELASTICITY Final Rejection ECOLAB USA INC.
17684989 AUTOMATED MODULATION OF ANTIMICROBIAL CHEMISTRY APPLICATION IN WATER SYSTEMS Non-Final OA ECOLAB USA INC.
18313523 METHODS FOR REMOVING DEICING SALT IONS FROM WATER RUNOFF Final Rejection VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
17424396 METHODS AND APPARATUS TO SELECTIVELY EXTRACT CONSTITUENTS FROM BIOLOGICAL SAMPLES Final Rejection BECTON DICKINSON AND COMPANY
17943514 CHROMATOGRAPHY SYSTEM Non-Final OA Sanofi
18105977 APPARATUS AND METHOD FOR TESTING INTEGRITY OF AN ULTRAFILTER MEMBRANE Non-Final OA GAMBRO LUNDIA AB
17878412 IN-LINE SENSORS FOR DIALYSIS APPLICATIONS Non-Final OA Baxter Healthcare SA
18015436 APPARATUS FOR PRODUCING ULTRAPURE WATER Final Rejection ORGANO CORPORATION
18071899 VESSEL, SYSTEM, AND ASSOCIATED METHOD FOR PRODUCT CONCENTRATION Final Rejection Repligen Corporation
18249411 Methods for purifying bacterial polysaccharides Non-Final OA Pfizer Inc.
18553342 DEVICE AND METHOD FOR COALESCENCE SEPARATION Non-Final OA ENI S.P.A.
18267113 FLOTATION METHOD AND FLOTATION SYSTEM Final Rejection SUMITOMO METAL MINING CO., LTD.
18563071 REVERSE OSMOSIS COMPOSITE MEMBRANE Non-Final OA NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY
17970874 METHODS FOR ANION-EXCHANGE ANALYSIS OF NUCLEIC ACIDS Final Rejection Waters Technologies Corporation
17595155 SYSTEMS AND METHODS FOR SENSORLESS ESTIMATION OF WATER SOFTENER SALT LEVEL AND REGENERATION CYCLING Non-Final OA Pentair Residential Filtration, LLC
18015934 DEVICE ASSEMBLY FOR PRODUCING BIOCONJUGATES Non-Final OA Sartorius Stedim Biotech GmbH
18012935 SELECTIVE REMOVAL OF MICRO-CONTAMINANTS FROM SLUDGE Non-Final OA SUEZ INTERNATIONAL
18546574 SYSTEMS AND METHODS PROVIDING FOR REDUCING ENERGY AND EQUIPMENT REQUIRED IN PROGRESSIVE NANOFILTRATION CONCENTRATION Non-Final OA Fluid Technology Solutions (FTS), Inc.
18233185 COATED CROSSFLOW FILTER MEMBRANES AND FILTRATION SYSTEMS FOR FRACTIONAL SEPARATION OF BIOLOGICAL MATERIAL Non-Final OA SHENZEN XBIOME BIOTECH CO. LTD.
18273568 Leaf Assembly for Water Treatment and Method of Assembly Thereof Non-Final OA Renew Health Ltd
18262006 Filtration Device Non-Final OA Sani Membranes ApS
17595911 A BIOCOMPATIBLE MEMBRANE COMPOSITE Final Rejection Viacyte, Inc.
18056607 POROUS MATERIAL WITH SURFACE-MODIFIED NANOARRAYS AND APPLICATION THEREOF Final Rejection Tsinghua Shenzhen International Graduate School
18041935 Monolithic Membrane Filters Final Rejection InnoSpire Technologies GmbH
18160452 NOVEL SLOW DISSOLVE WATER TREATMENT COMPOSITIONS Final Rejection INNOVATIVE WATER CARE, LLC
18010563 PROCESS FOR PURIFYING A PHOSPHATE CONTAINING ACIDIC SOLUTION COMPRISING IMPURITIES AND APPARATUS FOR APPLYING SAME Non-Final OA Prayon

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