Prosecution Insights
Last updated: April 19, 2026

Examiner: MCKENZIE, THOMAS B

Tech Center 1700 • Art Units: 1731 1776 1797

This examiner grants 57% of resolved cases

Performance Statistics

57.3%
Allow Rate
-7.7% vs TC avg
1052
Total Applications
+22.9%
Interview Lift
1202
Avg Prosecution Days
Based on 961 resolved cases, 2023–2026

Rejection Statute Breakdown

1.0%
§101 Eligibility
17.6%
§102 Novelty
46.5%
§103 Obviousness
27.5%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18019935 ELECTRET WEBS WITH BENZOATE SALT CHARGE-ENHANCING ADDITIVES Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18019424 ELECTRET WEBS WITH CARBOXYLIC ACID OR CARBOXYLATE SALT CHARGE-ENHANCING ADDITIVES Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
17777551 THIOLATE SALT MELT ADDITIVES Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
17631235 Spunbonded Air-Filtration Web Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
17792827 Control Of Cleanup Engine In A Biomass Conversion System Non-Final OA Massachusetts Institute of Technology
18199252 POINT OF USE OR POINT OF DISPENSE FILTER WITH MULTIPLE PLEAT PACKS Final Rejection ENTEGRIS, INC.
18008906 DEVICE FOR FILTERING COOLING AIR OF A TURBOMACHINE TURBINE Non-Final OA SAFRAN AIRCRAFT ENGINES
17649466 FILTER, RESPIRATOR, AND METHOD FOR MANUFACTURING FILTER Non-Final OA HONEYWELL SAFETY PRODUCTS USA, INC.
18027699 AIR FILTER MEDIUM, FILTER PLEAT PACK, AND AIR FILTER UNIT Non-Final OA NITTO DENKO CORPORATION
18253595 FILTER DEVICE, PRODUCTION METHOD THEREFOR, AND AIR CONDITIONER Final Rejection HONDA MOTOR CO., LTD.
18004137 FILTER UNIT AND AIR PURIFIER HAVING SAME Non-Final OA COWAY CO., LTD.
18229739 AIR FILTER MEDIUM, METHOD FOR PRODUCING AIR FILTER MEDIUM, MASK FILTER MEDIUM, AND PLEATED MASK FILTER MEDIUM Non-Final OA DAIKIN INDUSTRIES, LTD.
18490955 FILTER Final Rejection Murata Manufacturing Co., Ltd.
18321067 SYSTEM AND METHOD FOR PRE-PURIFICATION OF A FEED GAS STREAM Non-Final OA LINDE GMBH
18148835 GAS DETECTING APPARATUSES WITH INTEGRATED FLOW REGULATING COMPONENTS Non-Final OA HONEYWELL INTERNATIONAL INC.
17940707 Process Gas Treatment Device and Method for Treating Process Gas Final Rejection Glatt Gesellschaft mit beschränkter Haftung
18005682 HIGH FILTRATION FILTER WITH DISINFECTION, LOW PRESSURE DROP AND REDUCED CAKE FORMATION Non-Final OA THE HONG KONG POLYTECHNIC UNIVERSITY
18042402 AMMONIA-BASED CARBON DIOXIDE ABATEMENT SYSTEM AND METHOD, AND DIRECT CONTACT COOLER THEREFORE Final Rejection NUOVO PIGNONE TECNOLOGIE - S.R.L.
17696722 FILTER TRACK SYSTEM FOR HVAC SYSTEM Non-Final OA Johnson Controls Tyco IP Holdings LLP
17058700 FUNCTIONAL INSERT FOR NONWOVEN MATERIALS Non-Final OA Zephyros, Inc.
18085894 AIR PURIFIER WITH INTELLIGENT SENSORS AND AIRFLOW Non-Final OA FELLOWES, INC.
17925960 METHOD AND SYSTEM FOR PRODUCING A CARBONATE-CONTAINING SPECIES-RICH, NITROGEN-CONTAINING SPECIES-FREE SOLUTION Final Rejection ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
16821619 FILTER DIAGNOSTIC SYSTEM AND METHOD Non-Final OA Dust Company, Inc.
18268751 FILTER ELEMENT COMPRISING GRAPHENE FOR AIR CONDITIONING UNITS Final Rejection DIRECTA PLUS S.P.A.
18741594 GAS REMOVAL SYSTEM AND METHODS Non-Final OA AILNH, LLC
17919794 ABSORPTION COLUMN COMPRISING A FEED BOX HAVING A SERRATED WEIR AND A STRUCTURED PACKING AND PROCESS FOR THE PRODUCTION OF NITRIC ACID Final Rejection Yara International ASA
18090171 SEALING DEVICE FOR A GAS SORPTION ROTOR OF AN AIR TREATMENT SYSTEM AND A GAS SORPTION ROTOR ARRANGEMENT FOR AN AIR TREATMENT SYSTEM Non-Final OA MUNTERS CORPORATION
17414219 A METHOD FOR PREPARING A COMPOSITE FILTER MEDIUM AND THE COMPOSITE FILTER MEDIUM OBTAINED WITH THIS METHOD Final Rejection SAATI S.p.A.
18016258 SYSTEM AND METHOD FOR DEAERATION Final Rejection Donaldson Company, Inc.
17981840 SYSTEM COMPRISING A CONNECTOR FOR COUPLING TO A FLUID FILTER ELEMENT, FLUID FILTER ELEMENT, AND PROCESS FOR PRODUCING SAME Non-Final OA Donaldson Company, Inc.

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