Prosecution Insights
Last updated: April 19, 2026

Examiner: MCCALISTER, WILLIAM M

Tech Center 3700 • Art Units: 3753

This examiner grants 69% of resolved cases

Performance Statistics

68.9%
Allow Rate
-1.1% vs TC avg
1048
Total Applications
+19.1%
Interview Lift
1053
Avg Prosecution Days
Based on 1015 resolved cases, 2023–2026

Rejection Statute Breakdown

0.3%
§101 Eligibility
29.8%
§102 Novelty
38.6%
§103 Obviousness
26.2%
§112 Clarity

Currently Pending Office Actions

App #TitleStatusAssignee
18732341 SMART SHUT-OFF VALVE FOR HIGH PRESSURE HOSE Final Rejection SAUDI ARABIAN OIL COMPANY
18793538 SPLIT VALVES FOR REGULATING FLUID FLOW IN CLOSED LOOP SYSTEMS Non-Final OA General Electric Company
18514435 PIPE SPACER Non-Final OA AIRBUS OPERATIONS LIMITED
18464164 FLOW CONTROL DEVICE FORMED OF THERMALLY ADAPTIVE MATERIAL AND A THERMOELECTRIC JUNCTION Non-Final OA Hamilton Sundstrand Corporation
19070339 Schrader Valve Adapter and Optimizer Non-Final OA Fieldpiece Instruments, Inc.
18876002 MULTI-CROP VALVE FOR AGRICULTURAL INTER-CROPPING Non-Final OA 101288550 SASKATCHEWAN LTD.
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
18940554 CHECK VALVE HAVING PIVOTING LINK Non-Final OA Zurn Water, LLC
18939008 Systems and Methods for Check Valves with Through-Flow, Grooved Poppets Non-Final OA Prince Industries, LLC
18904669 DIAPHRAGM VALVE FORMED USING ADDITIVE MANUFACTURE Final Rejection Neptune Technology Group 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
18260754 LOW PRESSURE VALVE ASSEMBLIES Final Rejection Novoheart International Limited

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