Prosecution Insights
Last updated: May 29, 2026

Examiner: MCCALISTER, WILLIAM M

Tech Center 3700 • Art Units: 2853 3753 3763

This examiner grants 69% of resolved cases

Performance Statistics

69.1%
Allow Rate
-0.9% vs TC avg
1,051
Total Applications
+19.2%
Interview Lift
1071
Avg Prosecution Days
Based on 1025 resolved cases, 2023–2026

Rejection Statute Breakdown

0.1%
§101 Eligibility
7.6%
§102 Novelty
78.6%
§103 Obviousness
7.8%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18793538 SPLIT VALVES FOR REGULATING FLUID FLOW IN CLOSED LOOP SYSTEMS Non-Final OA General Electric Company
18747745 PRESSURE WASHER Non-Final OA Andreas Stihl AG & Co. KG
18974622 RAPID DEFLATE VALVE STEM AND ASSOCIATED SYSTEMS AND METHODS Non-Final OA Christopher Cox Creative
18220817 High strength tube joining by rotary friction welding Non-Final OA NEXANS
18939008 Systems and Methods for Check Valves with Through-Flow, Grooved Poppets Non-Final OA Prince Industries, LLC
18777226 FLUID-FLOW CONTROL DEVICE Final Rejection HAM-LET (Israel-Canada) Ltd
18772200 BAFFLE ASSEMBLY FOR USE IN AN IMMERSION COOLING SYSTEM Non-Final OA LIQUIDSTACK HOLDING B.V.
18531185 Servo-Controlled Metering Valve and Fluid Injection System Non-Final OA Electric Power Research Institute, Inc.
18713038 A VALVE AND A METHOD FOR CONTROLLING A PRESSURE DIFFERENCE BETWEEN A FLUID ON AN INSIDE AND AN OUTSIDE OF A CHAMBER Final Rejection Cubility AS
18707483 VALVE FOR A UROSTOMY APPLIANCE Non-Final OA Salts Healthcare Limited
18570221 A METHOD OF MANUFACTURING A DOUBLE-WALLED ELBOW PIPE SEGMENT, A PIPE ASSEMBLY Non-Final OA Pipeflex Systems Ltd

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