Prosecution Insights
Last updated: August 18, 2026

Examiner: MCKENZIE, THOMAS B

Tech Center 1700 • Art Units: 1731 1776 1797

This examiner grants 57% of resolved cases

Performance Statistics

57.4%
Allow Rate
-7.6% vs TC avg
1,060
Total Applications
+22.5%
Interview Lift
1191
Avg Prosecution Days
Based on 987 resolved cases, 2023–2026

Rejection Statute Breakdown

0.8%
§101 Eligibility
19.7%
§102 Novelty
47.0%
§103 Obviousness
26.3%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18199077 NANOFIBER FILTER AND METHOD FOR MANUFACTURING SAME Non-Final OA SAMSUNG ELECTRONICS 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.
18253595 FILTER DEVICE, PRODUCTION METHOD THEREFOR, AND AIR CONDITIONER Final Rejection HONDA MOTOR CO., LTD.
18690420 METHOD OF REDUCING DIMETHYL ETHER FORMATION DURING A REGENERATION CYCLE Non-Final OA BASF Corporation
18008906 DEVICE FOR FILTERING COOLING AIR OF A TURBOMACHINE TURBINE Non-Final OA SAFRAN AIRCRAFT ENGINES
18342773 REVERSIBLE BIPOLARIZATION IONIZER Non-Final OA Carrier Corporation
17649466 FILTER, RESPIRATOR, AND METHOD FOR MANUFACTURING FILTER Final Rejection HONEYWELL SAFETY PRODUCTS USA, INC.
18019935 ELECTRET WEBS WITH BENZOATE SALT CHARGE-ENHANCING ADDITIVES Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
17777551 THIOLATE SALT MELT ADDITIVES Non-Final OA 3M INNOVATIVE PROPERTIES COMPANY
18770911 AIR FILTERING PROCESS AND HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM Non-Final OA MAHLE INTERNATIONAL GMBH
18689376 SEPARATION FUNCTIONAL LAYER, SEPARATION MEMBRANE, AND METHOD FOR MANUFACTURING SEPARATION FUNCTIONAL LAYER Non-Final OA NITTO DENKO CORPORATION
18027699 AIR FILTER MEDIUM, FILTER PLEAT PACK, AND AIR FILTER UNIT Final Rejection NITTO DENKO CORPORATION
18697833 SYSTEMS AND PROCESSES FOR MAINTAINING CONTINUOUS CARBON DIOXIDE CAPTURE Non-Final OA SHELL USA, INC.
18152485 LIQUID TRAP TANK AND METHOD FOR TRAPPING LIQUID Non-Final OA SEMES CO.,LTD.
18320109 MORPHOLOGICAL IMPROVEMENTS IN FILTER MEDIA Non-Final OA Hollingsworth & Vose Company
17720908 HIGH EFFICIENCY FILTER MEDIA Non-Final OA Hollingsworth & Vose Company
17852747 CHANNELIZED METAL SUBSTRATE TO ENHANCE INACTIVATION OF MICROBES Non-Final OA COLORADO SCHOOL OF MINES

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